Shimano GRX Di2 RX825 2x12-speed Group Disc 160/160mm
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Product information "GRX Di2 RX825 2x12-speed Group Disc 160/160mm"
The GRX Di2 is Shimano's new 2x12-speed electronic groupset for gravel bikes, a combination of Shimano's unrivalled electronic shifting technology and a wide range of gear ratio options. Gravel tours, competitions or bikepacking adventures can now be tackled with even more confidence and comfort. After all, Shimano developed every single component with the special needs of gravel bikers in mind, whether they are travelling on lonely forest trails, taking part in a gravel race or simply want to enjoy the great outdoors undisturbed (no box packaging).
The innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has proven itself over many years. The main difference between the systems is that the shifting process is no longer mechanical, but electronic. This electronic shifting system has been extensively tested in recent years by several professional cyclists under all conceivable conditions, e.g. in rain, mud, extreme cold, on cobblestones and a combination of these factors. Shifting is done by simply pressing a button. No effort is required to shift gears, which has clear advantages as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by shifting gears. The shifting system enables precise and effortless shifting in all situations, even with cold hands or when the rider is completely exhausted. The shifting performance can also no longer be affected by dirty or stretched cables, as the shift signal is transmitted electronically. The operating buttons work in a similar way to mechanical dual control levers, making it easy to get used to the SEIS.
E-Tube
The E-Tube platform offers optimum flexibility. E-Tube transmits interactive signals and supplies all parts with power via plug & play connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. And the SMPCE1 establishes the connection between PC and components to update the firmware. Digital devices stay up to date by updating the firmware and offer better function.
Shimano Shadow RD+
Quiet drivetrain and less distraction. Rear derailleur stabilizer reduces chain slap. Simple solution to prevent the chain from jumping off. Lighter and more efficient than chain devices with rollers.
Scope of delivery - Shimano GRX Di2 RX825 2x12-speed groupset + disc brakes 160/160mm
- 1 x Shimano GRX FC-RX820 2x12-speed crankset 48/31 (choose variant)
- 1 x Shimano SM-BBR60 BSA Hollowtech II bottom bracket
- 1 x Shimano GRX Di2 ST-RX825+BR-RX820 2x12-speed disc brake set
- 1 x Shimano GRX Di2 FD-RX825 2x12-speed front derailleur braze-on
- 1 x Shimano GRXDi2 RD-RX825 2x12-speed rear derailleur
- 1 x Shimano CS-R8101 12-speed cassette 11-34 incl. retaining ring
- 1 x Shimano CN-M8100 12-speed chain 116 links with Quick-Link
- 1 x Shimano BT-DN300 Di2 battery for mounting in the seat post
- 1 x Shimano EW-EC300 charging cable USB type A (cable length 1700mm)
- 1 x Shimano Di2 EW-SD300-I power cable 1000mm for internal cable routing
- 1 x Shimano Di2 EW-SD300-I power cable 1200mm for internal cable routing
- 2 x Shimano RT-CL800 Center-Lock brake rotor 160mm incl. lockring
For your riding freedom: the GRX Di2 RX825 2x12-speed disc groupset from Shimano
Gravel biking shouldn't be complicated. The appeal of this cycling discipline with its drop bar and unpaved roads lies in its simplicity, openness and adventure. No ride is impossible. Everyone can ride. The equipment should be functional and reliable without breaking the budget. That's why the latest version of GRX, Shimano's groundbreaking and industry-first gravel-specific component group, will excite you whether you're a seasoned gravel veteran or a newcomer to the rough roads and trails.
For riders looking for the best of both worlds, the new 2x12 RX825 UNDROPPABLE drivetrain is the right choice. With a gravel-optimized 48/31 or 46/30 chainring combination up front and an 11-34 or 11-36 cassette, this drivetrain offers an extremely wide gear range so you can ride at a comfortable cadence whether you're pedaling on the flats, facing endless dirt trails or tackling a massive off-road climb.
Alongside this range of gear ratio options, there are the new ST-RX825 brake/shift levers. The new lever design has been specially developed for use with flare handlebars, which play an important role in gravel riding. It relies on a non-slip surface structure and significantly improved ergonomics that reduce the pressure on your palms. Together, these changes increase comfort and control so you can fearlessly tackle tricky terrain or focus on the gravel road ahead.
This setup offers precise front and rear shifting and integrated SHADOW-PLUS chain stabilization for ultimate confidence on bumpy surfaces. The gravel-specific 2x12 option provides a tighter rear cassette gradation, ideal for fine cadence changes during competitions and fast-paced weekend group rides.
The new wireless Di2 platform ensures fast and smooth shifting at the front derailleur. It also offers a choice between manual shifting and synchronized shift assist modes - SEMI-SYNCHRO or FULL-SYNCHRO - that feel like your own personal assistant! In SEMI-SYNCHRO mode, the rear derailleur automatically adjusts to avoid large jumps in the gear ratio, allowing you to maintain your cadence and rhythm. In FULL SYNCHRO mode, the rear derailleur and front derailleur work together harmoniously so that you always have the right gear engaged and no longer need to worry. Seamless communication with the rear derailleur combined with programmed control of the chain guide minimizes the risk of the chain jumping off.
The fully and semi-synchronized shifting functions can be selected in the E-TUBE app. Thanks to the digital precision of the electronic shifting and its coordinated communication between the front derailleur and rear derailleur, the SHIMANO GRX front derailleur offers an excellent shifting experience
Shimano GRX FC-RX820 2x12-speed cranks 48/31
The new GRX FC-RX820-2 HOLLOWTECH II 2x12-speed crankset offers the perfect synthesis of low weight and high efficiency for riding in mixed terrain. The gear ratio options cater to the special requirements of gravel and ensure a consistent rhythm with tighter gear steps.Features
- Optimum gear ratio for different surfaces and riding styles
- Gear ratio tailored to gravel helps to maintain the riding rhythm even on uneven terrain with wider tires
- Wide gear range at the front
- 17 teeth difference
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX
- Model: FC-RX820-2
- Gradation: 48/31 teeth
- Q-Factor: 151mm
- Housing width: 68 / 70mm
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Mount: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crank spider: Yes
- Bolt circle: 110/80mm
- Chainline: 47mm
- Recommended bottom bracket Pressfit: SM-BB72
- Recommended bottom bracket BSA: SM-BBR60
Crank arm length (choose variant)
- 170mm
- 172.5mm
- 175mm
Material
- Crank arms: Aluminium, anodized
- Crank axle: Steel, plated
- Chainrings: anodized aluminium
Color
- Series color
Weight
- approx. 721g/172.5mm (manufacturer's specification)
Shimano GRX Di2 ST-RX825 2x12-speed STI unit + BR-RX820 disc brake set
A central concern of gravel riders is a reliable braking system with sufficient power reserves, the new Shimano GRX Di2 2x12-speed STI levers ST-RX825 with BR-RX820 flat-mount brake calipers for hydraulic disc brakes are characterized by excellent deceleration performance to keep control on steep, demanding or even surprising descents.Features
- Wireless Di2 connectivity
- Tidy cockpit: the wireless connection optimizes the aesthetics of the bike and enables lightning-fast shifting
- Longer lasting. With two CR1632 batteries (battery life: 3.5 to 4 years)
- Three Di2 buttons per lever for E-TUBE PROJECT Cyclist app customization
- Compatible with satellite shifters
- More control on changing terrain
- Lever and bracket ergonomics tailored to gravel
- Anti-slip brake lever
- Shifting is just as easy as with high-quality road systems
- Don't be afraid to ride on uneven terrain
- Excellent heat dissipation
- ICE TECHNOLOGIES
- Flat mounting
- Easy adjustment and maintenance
- Practical tool access
- Simple cable connection system (J-Kit)
- Simple impeller change
- Simple, clean bleeding system
- ONE WAY BLEEDING
- Included in the scope of delivery: 1 x GRX Di2 ST-RX825 2x12-speed STI unit set, 2 x GRX BR-RX820 flat-mount brake callipers, 1 x flat-mount adapter 140mm/160mm, 2 x brake pads resin without cooling fins, 2 x brake hosefins, 2 x brake hose SM-BH90-JK-SS 1000mm / 1700mm (can be shortened), 4 x fixing screw for brake calliper (for rear 2 x 25mm), 2 x hose connection kit
- J-Kit - The SM-BH90-JK-SS brake lines are filled with mineral oil and pre-assembled on the BR-RX820 brake callipers!
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: ST-RX825
- Type: Dual-Control (STI)
- Mounting: left/right
- Gear steps front: 2x
- Rear gear steps: 12-speed
- Optical gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23.8mm/24.2mm
- Brake type: Hydraulic brake system (disc brake)
- Brake caliper: BR-RX820
- Brake caliper mount: Flat mount
- Brake pad: Resin without cooling fins
- Brake hose: SM-BH90-JK-SS front 1000mm / rear 1700mm (can be shortened)
- One-way bleeding: Yes
- Brake fluid: Mineral oil
- Recommended brake rotor: SM-RT64, SM-RT70, SM-RT800
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number ofE-tube connections: 1 each
- Number of E-tube connections: 0
- Di2 wireless chip: Yes
- Battery: CR1632 x 2 each
Material
- Lever: Aluminum
- Brake caliper: Aluminum
Color
- Series color
Weight
- approx. 415g/ST-RX825 pair | 267g/BR-RX820 pair (manufacturer's specification)
Shimano GRX Di2 FD-RX825 2x12-speed braze-on front derailleur
The SHIMANO GRX Di2 RX-825-F 2x 12-speed front derailleur offers precise and coordinated shifting. Features include a 2.5 mm outwardly offset chainline, which provides greater tire clearance for riding in mixed terrain.Features
- Powerful, precise and smooth derailleur function
- Programmed control of the chain guide through automatic trimming
- SHIMANO SYNCHRONIZED SHIFT
- Manual, fully and semi-synchronized shifting program
- Chainline +2.5mm compared to conventional road bike derailleurs
- Compatible with up to 42mm tires
- Higher wheel gap
- 17 teeth gear range
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: FD-RX825-F
- Fastening: Braze-on
- Cable routing: Down-Pull
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Largest chainring: 48 teeth
- Total tooth capacity: 17 teeth
- Compatible chain: 12-speed HG
- Chainst. Angle: 63-66°
- Chainline: 47mm
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number of E-tube connections: 1
- Number of E-tube connections: 0
- Di2 wireless chip: No
Material
- Aluminum
- Steel
- Glass fiber reinforced plastic
Color
- Series color
Weight
- approx. 142g (manufacturer's specification)
Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
The SHIMANO GRX Di2 RD-RX825 2x12-speed rear derailleur with integrated chain stabilizer ensures quiet, safe and precise shifting on mixed terrain. For riding on smooth surfaces, the chain stabilizer can be deactivated using the ON/OFF switch on the rear derailleur. The RD-RX825 rear derailleur is compatible with cassettes with a maximum of 36 teeth on the largest sprocket.Features
- Quiet and safe shifting on the rear derailleur on uneven terrain
- Adjustable chain stabilizer prevents the chain from hitting and jumping off
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on changing ground conditions
- Stabilizer ON-OFF switch to adapt to the terrain
- Compact design with integrated unit for wireless signal transmission, charger and switch
- LED status indicator
- Battery indicator
- Pairing
- Adjustment mode, etc.
Product features
- Use: Gravel, Cyclocross
- Group: GRX Di2 RX825
- Model: RD-RX825
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Compatible chain: 12-speed HG
- Max. Teeth large sprocket: 36 teeth
- Min. teeth large sprocket: 34 teeth
- Max. Teeth small sprocket: 11 teeth
- Max. Teeth small sprocket: 11 teeth
- Max. Differential front: 17 teeth
- Total capacity: 40 teeth
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number of E-tube connections: 1
- Number of E-tube connections: 0
- Di2 wireless chip: Yes
Material
- Aluminum
- Steel
- Glass fiber reinforced plastic
Color
- Series color
Weight
- approx. 310g (manufacturer's specification)
Shimano Ultegra CS-R8101 12-speed cassette 11-34
The Shimano CS-R8101-12 is the matching 12-speed cassette for the new Ultegra R8100 and GRX RX820 groupset. The advanced drivetrain is 100% focused on performance and is a real revolution thanks to HYPERGLIDE+ technology. Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies.Features
- Hyperglide+ faster shifting, improved speed, shifting efficiency and smoothness on any terrain
- revised 12-speed gradation for first-class efficiency and optimum acceleration in all racing situations
- Faster, smoother shifting under maximum pedaling force
- Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies
Product features
- Use: Road bike / Gravel
- Groupset: Ultegra R8100 / GRX RX820
- Model: CS-R8101-12
- Type: HG Spline L2 road bike 12-speed / HG Spline L road bike 12/11-speed freehub body
- Gear steps: 12-speed
- Recommended chain: CN-M8100 HG 12-speed
Gradation
- 11-34 (11-12-13-14-15-17-19-21-24-27-30-34 teeth)
Material
- Sprocket carrier: Aluminum
- Sprocket: Steel
- Circlip: Aluminum
Weight
- approx. 345g/11-34 (manufacturer's specification)
Shimano CN-M8100 12-speed chain 116 links with Quick-Link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting performance and smoother running - even on rough terrain. The also new SM-CN910-12 quick-link fastener enables easy assembly.Features
- Special chain design for new drivetrain components
- Improved chain guide with a larger area at the end of the inner plate to hold the tooth on the front and cassette sprocket
- Improved shifting performance
- Simple assembly
- Smoother riding even in rough terrain
- Compatible with the new generation of drivetrain components
- Comes with the user-friendly Quick-Link (SM-CN910-12)
- Quick-Link pliers for installation and removal (TL-CN10) - Not included!
Product features
- Use: MTB, Gravel, Cyclocross
- Model: CN-M8100
- Front gear steps: 1/2-speed
- Rear gear steps: 12-speed
- Type: HG
- Hollow pin: No
- Outer plate coating: SIL-TEC
- Coating of the inner plate: Chromizing
- Closure: Quick-Link SM-CN910-12
Links
- 116
Shimano RT-CL800 Center-Lock brake rotors 160mm
SHIMANO's compact and lightweight RT-CL800 brake rotors are characterized by particularly fast heat dissipation thanks to ICE TECHNOLOGIES FREEZA heat management system. SHIMANO's CENTER LOCK design makes the installation and removal of brake rotors child's play.Features
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA design for even faster heat dissipation
- 140mm and 160mm optimal for road / gravel bikes
Product features
- Application: Road bike, Gravel
- Groupset: Ultegra, GRX
- Model: RT-CL800
- Mount: Center-Lock
- Compatible pads: Metal / Resin (plastic)
Diameter
- 160mm
Material
- Rotor: Stainless steel / aluminum
- Lock ring: Aluminum
Technologies
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEMThe innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has proven itself over many years. The main difference between the systems is that the shifting process is no longer mechanical, but electronic. This electronic shifting system has been extensively tested in recent years by several professional cyclists under all conceivable conditions, e.g. in rain, mud, extreme cold, on cobblestones and a combination of these factors. Shifting is done by simply pressing a button. No effort is required to shift gears, which has clear advantages as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by shifting gears. The shifting system enables precise and effortless shifting in all situations, even with cold hands or when the rider is completely exhausted. The shifting performance can also no longer be affected by dirty or stretched cables, as the shift signal is transmitted electronically. The operating buttons work in a similar way to mechanical dual control levers, making it easy to get used to the SEIS.
E-Tube
The E-Tube platform offers optimum flexibility. E-Tube transmits interactive signals and supplies all parts with power via plug & play connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. And the SMPCE1 establishes the connection between PC and components to update the firmware. Digital devices stay up to date by updating the firmware and offer better function.
Shimano Shadow RD+
Quiet drivetrain and less distraction. Rear derailleur stabilizer reduces chain slap. Simple solution to prevent the chain from jumping off. Lighter and more efficient than chain devices with rollers.
Shimano GRX Di2
- Manufacturer number: RX8252DX81134MK
Manufacturer:
SHIMANO INC.3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
Person responsible in the EU:
Shimano Europe BVHigh Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
Shimano GRX Di2 RX825 2x12-speed Group Disc 160/160mm
The GRX Di2 is Shimano's new 2x12-speed electronic groupset for gravel bikes, a combination of Shimano's unrivalled electronic shifting technology and a wide range of gear ratio options. Gravel tours, competitions or bikepacking adventures can now be tackled with even more confidence and comfort. After all, Shimano developed every single component with the special needs of gravel bikers in mind, whether they are travelling on lonely forest trails, taking part in a gravel race or simply want to enjoy the great outdoors undisturbed (no box packaging).
The innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has proven itself over many years. The main difference between the systems is that the shifting process is no longer mechanical, but electronic. This electronic shifting system has been extensively tested in recent years by several professional cyclists under all conceivable conditions, e.g. in rain, mud, extreme cold, on cobblestones and a combination of these factors. Shifting is done by simply pressing a button. No effort is required to shift gears, which has clear advantages as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by shifting gears. The shifting system enables precise and effortless shifting in all situations, even with cold hands or when the rider is completely exhausted. The shifting performance can also no longer be affected by dirty or stretched cables, as the shift signal is transmitted electronically. The operating buttons work in a similar way to mechanical dual control levers, making it easy to get used to the SEIS.
E-Tube
The E-Tube platform offers optimum flexibility. E-Tube transmits interactive signals and supplies all parts with power via plug & play connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. And the SMPCE1 establishes the connection between PC and components to update the firmware. Digital devices stay up to date by updating the firmware and offer better function.
Shimano Shadow RD+
Quiet drivetrain and less distraction. Rear derailleur stabilizer reduces chain slap. Simple solution to prevent the chain from jumping off. Lighter and more efficient than chain devices with rollers.
Scope of delivery - Shimano GRX Di2 RX825 2x12-speed groupset + disc brakes 160/160mm
- 1 x Shimano GRX FC-RX820 2x12-speed crankset 48/31 (choose variant)
- 1 x Shimano SM-BBR60 BSA Hollowtech II bottom bracket
- 1 x Shimano GRX Di2 ST-RX825+BR-RX820 2x12-speed disc brake set
- 1 x Shimano GRX Di2 FD-RX825 2x12-speed front derailleur braze-on
- 1 x Shimano GRXDi2 RD-RX825 2x12-speed rear derailleur
- 1 x Shimano CS-R8101 12-speed cassette 11-34 incl. retaining ring
- 1 x Shimano CN-M8100 12-speed chain 116 links with Quick-Link
- 1 x Shimano BT-DN300 Di2 battery for mounting in the seat post
- 1 x Shimano EW-EC300 charging cable USB type A (cable length 1700mm)
- 1 x Shimano Di2 EW-SD300-I power cable 1000mm for internal cable routing
- 1 x Shimano Di2 EW-SD300-I power cable 1200mm for internal cable routing
- 2 x Shimano RT-CL800 Center-Lock brake rotor 160mm incl. lockring
For your riding freedom: the GRX Di2 RX825 2x12-speed disc groupset from Shimano
Gravel biking shouldn't be complicated. The appeal of this cycling discipline with its drop bar and unpaved roads lies in its simplicity, openness and adventure. No ride is impossible. Everyone can ride. The equipment should be functional and reliable without breaking the budget. That's why the latest version of GRX, Shimano's groundbreaking and industry-first gravel-specific component group, will excite you whether you're a seasoned gravel veteran or a newcomer to the rough roads and trails.
For riders looking for the best of both worlds, the new 2x12 RX825 UNDROPPABLE drivetrain is the right choice. With a gravel-optimized 48/31 or 46/30 chainring combination up front and an 11-34 or 11-36 cassette, this drivetrain offers an extremely wide gear range so you can ride at a comfortable cadence whether you're pedaling on the flats, facing endless dirt trails or tackling a massive off-road climb.
Alongside this range of gear ratio options, there are the new ST-RX825 brake/shift levers. The new lever design has been specially developed for use with flare handlebars, which play an important role in gravel riding. It relies on a non-slip surface structure and significantly improved ergonomics that reduce the pressure on your palms. Together, these changes increase comfort and control so you can fearlessly tackle tricky terrain or focus on the gravel road ahead.
This setup offers precise front and rear shifting and integrated SHADOW-PLUS chain stabilization for ultimate confidence on bumpy surfaces. The gravel-specific 2x12 option provides a tighter rear cassette gradation, ideal for fine cadence changes during competitions and fast-paced weekend group rides.
The new wireless Di2 platform ensures fast and smooth shifting at the front derailleur. It also offers a choice between manual shifting and synchronized shift assist modes - SEMI-SYNCHRO or FULL-SYNCHRO - that feel like your own personal assistant! In SEMI-SYNCHRO mode, the rear derailleur automatically adjusts to avoid large jumps in the gear ratio, allowing you to maintain your cadence and rhythm. In FULL SYNCHRO mode, the rear derailleur and front derailleur work together harmoniously so that you always have the right gear engaged and no longer need to worry. Seamless communication with the rear derailleur combined with programmed control of the chain guide minimizes the risk of the chain jumping off.
The fully and semi-synchronized shifting functions can be selected in the E-TUBE app. Thanks to the digital precision of the electronic shifting and its coordinated communication between the front derailleur and rear derailleur, the SHIMANO GRX front derailleur offers an excellent shifting experience
Shimano GRX FC-RX820 2x12-speed cranks 48/31
The new GRX FC-RX820-2 HOLLOWTECH II 2x12-speed crankset offers the perfect synthesis of low weight and high efficiency for riding in mixed terrain. The gear ratio options cater to the special requirements of gravel and ensure a consistent rhythm with tighter gear steps.Features
- Optimum gear ratio for different surfaces and riding styles
- Gear ratio tailored to gravel helps to maintain the riding rhythm even on uneven terrain with wider tires
- Wide gear range at the front
- 17 teeth difference
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX
- Model: FC-RX820-2
- Gradation: 48/31 teeth
- Q-Factor: 151mm
- Housing width: 68 / 70mm
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Mount: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crank spider: Yes
- Bolt circle: 110/80mm
- Chainline: 47mm
- Recommended bottom bracket Pressfit: SM-BB72
- Recommended bottom bracket BSA: SM-BBR60
Crank arm length (choose variant)
- 170mm
- 172.5mm
- 175mm
Material
- Crank arms: Aluminium, anodized
- Crank axle: Steel, plated
- Chainrings: anodized aluminium
Color
- Series color
Weight
- approx. 721g/172.5mm (manufacturer's specification)
Shimano GRX Di2 ST-RX825 2x12-speed STI unit + BR-RX820 disc brake set
A central concern of gravel riders is a reliable braking system with sufficient power reserves, the new Shimano GRX Di2 2x12-speed STI levers ST-RX825 with BR-RX820 flat-mount brake calipers for hydraulic disc brakes are characterized by excellent deceleration performance to keep control on steep, demanding or even surprising descents.Features
- Wireless Di2 connectivity
- Tidy cockpit: the wireless connection optimizes the aesthetics of the bike and enables lightning-fast shifting
- Longer lasting. With two CR1632 batteries (battery life: 3.5 to 4 years)
- Three Di2 buttons per lever for E-TUBE PROJECT Cyclist app customization
- Compatible with satellite shifters
- More control on changing terrain
- Lever and bracket ergonomics tailored to gravel
- Anti-slip brake lever
- Shifting is just as easy as with high-quality road systems
- Don't be afraid to ride on uneven terrain
- Excellent heat dissipation
- ICE TECHNOLOGIES
- Flat mounting
- Easy adjustment and maintenance
- Practical tool access
- Simple cable connection system (J-Kit)
- Simple impeller change
- Simple, clean bleeding system
- ONE WAY BLEEDING
- Included in the scope of delivery: 1 x GRX Di2 ST-RX825 2x12-speed STI unit set, 2 x GRX BR-RX820 flat-mount brake callipers, 1 x flat-mount adapter 140mm/160mm, 2 x brake pads resin without cooling fins, 2 x brake hosefins, 2 x brake hose SM-BH90-JK-SS 1000mm / 1700mm (can be shortened), 4 x fixing screw for brake calliper (for rear 2 x 25mm), 2 x hose connection kit
- J-Kit - The SM-BH90-JK-SS brake lines are filled with mineral oil and pre-assembled on the BR-RX820 brake callipers!
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: ST-RX825
- Type: Dual-Control (STI)
- Mounting: left/right
- Gear steps front: 2x
- Rear gear steps: 12-speed
- Optical gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23.8mm/24.2mm
- Brake type: Hydraulic brake system (disc brake)
- Brake caliper: BR-RX820
- Brake caliper mount: Flat mount
- Brake pad: Resin without cooling fins
- Brake hose: SM-BH90-JK-SS front 1000mm / rear 1700mm (can be shortened)
- One-way bleeding: Yes
- Brake fluid: Mineral oil
- Recommended brake rotor: SM-RT64, SM-RT70, SM-RT800
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number ofE-tube connections: 1 each
- Number of E-tube connections: 0
- Di2 wireless chip: Yes
- Battery: CR1632 x 2 each
Material
- Lever: Aluminum
- Brake caliper: Aluminum
Color
- Series color
Weight
- approx. 415g/ST-RX825 pair | 267g/BR-RX820 pair (manufacturer's specification)
Shimano GRX Di2 FD-RX825 2x12-speed braze-on front derailleur
The SHIMANO GRX Di2 RX-825-F 2x 12-speed front derailleur offers precise and coordinated shifting. Features include a 2.5 mm outwardly offset chainline, which provides greater tire clearance for riding in mixed terrain.Features
- Powerful, precise and smooth derailleur function
- Programmed control of the chain guide through automatic trimming
- SHIMANO SYNCHRONIZED SHIFT
- Manual, fully and semi-synchronized shifting program
- Chainline +2.5mm compared to conventional road bike derailleurs
- Compatible with up to 42mm tires
- Higher wheel gap
- 17 teeth gear range
Product features
- Use: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: FD-RX825-F
- Fastening: Braze-on
- Cable routing: Down-Pull
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Largest chainring: 48 teeth
- Total tooth capacity: 17 teeth
- Compatible chain: 12-speed HG
- Chainst. Angle: 63-66°
- Chainline: 47mm
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number of E-tube connections: 1
- Number of E-tube connections: 0
- Di2 wireless chip: No
Material
- Aluminum
- Steel
- Glass fiber reinforced plastic
Color
- Series color
Weight
- approx. 142g (manufacturer's specification)
Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
The SHIMANO GRX Di2 RD-RX825 2x12-speed rear derailleur with integrated chain stabilizer ensures quiet, safe and precise shifting on mixed terrain. For riding on smooth surfaces, the chain stabilizer can be deactivated using the ON/OFF switch on the rear derailleur. The RD-RX825 rear derailleur is compatible with cassettes with a maximum of 36 teeth on the largest sprocket.Features
- Quiet and safe shifting on the rear derailleur on uneven terrain
- Adjustable chain stabilizer prevents the chain from hitting and jumping off
- SHIMANO SHADOW RD+
- Smooth and reliable shifting on changing ground conditions
- Stabilizer ON-OFF switch to adapt to the terrain
- Compact design with integrated unit for wireless signal transmission, charger and switch
- LED status indicator
- Battery indicator
- Pairing
- Adjustment mode, etc.
Product features
- Use: Gravel, Cyclocross
- Group: GRX Di2 RX825
- Model: RD-RX825
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Front gear steps: 2x
- Rear gear steps: 12-speed
- Compatible chain: 12-speed HG
- Max. Teeth large sprocket: 36 teeth
- Min. teeth large sprocket: 34 teeth
- Max. Teeth small sprocket: 11 teeth
- Max. Teeth small sprocket: 11 teeth
- Max. Differential front: 17 teeth
- Total capacity: 40 teeth
- Compatible power cable: EW-SD300
- Firmware Update E-tube Project: Yes
- Number of E-tube connections: 1
- Number of E-tube connections: 0
- Di2 wireless chip: Yes
Material
- Aluminum
- Steel
- Glass fiber reinforced plastic
Color
- Series color
Weight
- approx. 310g (manufacturer's specification)
Shimano Ultegra CS-R8101 12-speed cassette 11-34
The Shimano CS-R8101-12 is the matching 12-speed cassette for the new Ultegra R8100 and GRX RX820 groupset. The advanced drivetrain is 100% focused on performance and is a real revolution thanks to HYPERGLIDE+ technology. Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies.Features
- Hyperglide+ faster shifting, improved speed, shifting efficiency and smoothness on any terrain
- revised 12-speed gradation for first-class efficiency and optimum acceleration in all racing situations
- Faster, smoother shifting under maximum pedaling force
- Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies
Product features
- Use: Road bike / Gravel
- Groupset: Ultegra R8100 / GRX RX820
- Model: CS-R8101-12
- Type: HG Spline L2 road bike 12-speed / HG Spline L road bike 12/11-speed freehub body
- Gear steps: 12-speed
- Recommended chain: CN-M8100 HG 12-speed
Gradation
- 11-34 (11-12-13-14-15-17-19-21-24-27-30-34 teeth)
Material
- Sprocket carrier: Aluminum
- Sprocket: Steel
- Circlip: Aluminum
Weight
- approx. 345g/11-34 (manufacturer's specification)
Shimano CN-M8100 12-speed chain 116 links with Quick-Link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting performance and smoother running - even on rough terrain. The also new SM-CN910-12 quick-link fastener enables easy assembly.Features
- Special chain design for new drivetrain components
- Improved chain guide with a larger area at the end of the inner plate to hold the tooth on the front and cassette sprocket
- Improved shifting performance
- Simple assembly
- Smoother riding even in rough terrain
- Compatible with the new generation of drivetrain components
- Comes with the user-friendly Quick-Link (SM-CN910-12)
- Quick-Link pliers for installation and removal (TL-CN10) - Not included!
Product features
- Use: MTB, Gravel, Cyclocross
- Model: CN-M8100
- Front gear steps: 1/2-speed
- Rear gear steps: 12-speed
- Type: HG
- Hollow pin: No
- Outer plate coating: SIL-TEC
- Coating of the inner plate: Chromizing
- Closure: Quick-Link SM-CN910-12
Links
- 116
Shimano RT-CL800 Center-Lock brake rotors 160mm
SHIMANO's compact and lightweight RT-CL800 brake rotors are characterized by particularly fast heat dissipation thanks to ICE TECHNOLOGIES FREEZA heat management system. SHIMANO's CENTER LOCK design makes the installation and removal of brake rotors child's play.Features
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA design for even faster heat dissipation
- 140mm and 160mm optimal for road / gravel bikes
Product features
- Application: Road bike, Gravel
- Groupset: Ultegra, GRX
- Model: RT-CL800
- Mount: Center-Lock
- Compatible pads: Metal / Resin (plastic)
Diameter
- 160mm
Material
- Rotor: Stainless steel / aluminum
- Lock ring: Aluminum
Technologies
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEMThe innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has proven itself over many years. The main difference between the systems is that the shifting process is no longer mechanical, but electronic. This electronic shifting system has been extensively tested in recent years by several professional cyclists under all conceivable conditions, e.g. in rain, mud, extreme cold, on cobblestones and a combination of these factors. Shifting is done by simply pressing a button. No effort is required to shift gears, which has clear advantages as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by shifting gears. The shifting system enables precise and effortless shifting in all situations, even with cold hands or when the rider is completely exhausted. The shifting performance can also no longer be affected by dirty or stretched cables, as the shift signal is transmitted electronically. The operating buttons work in a similar way to mechanical dual control levers, making it easy to get used to the SEIS.
E-Tube
The E-Tube platform offers optimum flexibility. E-Tube transmits interactive signals and supplies all parts with power via plug & play connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. And the SMPCE1 establishes the connection between PC and components to update the firmware. Digital devices stay up to date by updating the firmware and offer better function.
Shimano Shadow RD+
Quiet drivetrain and less distraction. Rear derailleur stabilizer reduces chain slap. Simple solution to prevent the chain from jumping off. Lighter and more efficient than chain devices with rollers.
Shimano GRX Di2
- Manufacturer number: RX8252DX81134MK
Manufacturer:
SHIMANO INC.3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
Person responsible in the EU:
Shimano Europe BVHigh Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
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