Shimano GRX Di2 RX825 2x12-speed Group Disc 160/160mm TOP-DEAL
Product information "GRX Di2 RX825 2x12-speed Group Disc 160/160mm TOP-DEAL "
Contents - Shimano GRX Di2 RX825 2x12-speed groupset + 160/160mm disc brakes
- 1 x Shimano GRX FC-RX820 2x12-speed crankset 48/31 (select variant)
- 1 x Shimano SM-BB72-41B Hollowtech II Press-Fit 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 (solder-on)
- 1 x Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
- 1 x Shimano CS-R8101 12-speed cassette 11-34, including retaining ring
- 1 x Shimano CN-M8100 12-speed chain, 120 links with quick-link
- 1 x Shimano BT-DN300 Di2 battery for fitting inside the seatpost
- 1 x Shimano EW-EC300 USB Type A charging cable (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 Centre-Lock brake discs, 160 mm, including lock ring
For freedom on the bike: the GRX Di2 RX825 2x12-speed disc groupset from Shimano
Gravel cycling shouldn’t be complicated. The appeal of this cycling discipline – with its drop bars and unpaved roads – lies in its simplicity, openness and sense of adventure. No ride is impossible. Everyone can join in. Your kit should be functional and reliable, without breaking the bank. That’s why you’ll love the latest version of GRX, Shimano’s groundbreaking and industry-first gravel-specific groupset, whether you’re a seasoned gravel veteran or a newcomer to 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-optimised 48/31 or 46/30 chainring combination at the front and an 11-34 or 11-36 cassette, this drivetrain offers an extremely wide gear range, allowing you to ride at a comfortable cadence, whether you’re cycling on the flat, facing endless dirt roads or tackling a massive off-road climb.
Alongside this range of gravel-optimised gear ratios come the new ST-RX825 brake/shift levers. The new lever design has been specifically developed for use with flare handlebars, which play a key role in gravel riding. It features a non-slip surface texture and significantly improved ergonomics, which reduce the pressure on your palms. Taken together, these changes enhance comfort and control, allowing you to tackle tricky terrain with confidence or focus on the gravel track ahead.
This setup offers precise front and rear shifting and integrated SHADOW-PLUS chain stabilisation for ultimate reliability on bumpy terrain. The gravel-specific 2x12 option provides a closer-spaced rear cassette, ideal for subtle cadence adjustments during races 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 synchronised shifting assist modes – SEMI-SYNCHRO or FULL-SYNCHRO – which feel just like having your own personal assistant! In SEMI-SYNCHRO mode, the rear derailleur automatically adjusts to avoid large jumps in gear ratio, allowing you to maintain your cadence and rhythm. In FULL-SYNCHRO mode, the rear derailleur and front derailleur work together seamlessly, ensuring you’re always in the right gear and don’t have to worry about a thing. Seamless communication with the rear derailleur, combined with programmed chain guidance control, minimises the risk of the chain coming off.
In the E-TUBE app, you can select between fully and semi-synchronised shifting functions. Thanks to the digital precision of the electronic shifting system and the 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 crankset 48/31
The new GRX FC-RX820-2 HOLLOWTECH II 2 x 12-speed crankset offers the perfect balance of low weight and high efficiency for riding on mixed terrain. The gear ratio options are tailored to the specific demands of gravel riding and ensure a smooth cadence thanks to closer gear spacing.
Features
- Optimal gear ratios for varied terrain and different riding styles
- A gear ratio tailored to gravel riding helps maintain your riding rhythm even on uneven terrain with wider tyres
- Wide gear range at the front
- 17-tooth difference
Product features
- Intendeduse: Gravel, cyclocross
- Groupset: GRX
- Model: FC-RX820-2
- Ratio: 48/31 teeth
- Q-factor: 151 mm
- Body width: 68 / 70 mm
- Front derailleur: 2-speed
- Rear gears: 12-speed
- Mounting: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crankset: Yes
- Bore diameter: 110/80 mm
- Chainline: 47 mm
- Recommended PressFit bottom bracket: SM-BB72
- Recommended BSA bottom bracket: SM-BBR60
Crank arm length (select variant)
- 170 mm
- 172.5 mm
Material
- Cranks: aluminium, anodised
- Crankset axle: steel, plated
- Chainrings: Anodisedaluminium
Colour
- 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 key priority for gravel riders is a reliable braking system with sufficient power reserves; the new Shimano GRX Di2 2 x 12-speed STI levers ST-RX825, paired with BR-RX820 flat-mount calipers for hydraulic disc brakes, are characterised by outstanding braking performance, helping you maintain control on steep, challenging or even unexpected descents.
Features
- Wireless Di2 connectivity
- Tidy cockpit: the wireless connection enhances the bike’s aesthetics and enables lightning-fast gear changes
- Long-lasting. Powered by two CR1632 batteries (battery life: 3.5 to 4 years)
- Three Di2 buttons per lever for customisation via the E-TUBE PROJECT Cyclist app
- Compatible with satellite shifters
- Greater control on varied terrain
- Ergonomics of the lever and mount optimised for gravel riding
- Non-slip brake lever
- Shifting is just as smooth as on high-end road systems
- Don’t be afraid to ride on uneven terrain
- Excellent heat dissipation
- ICE TECHNOLOGIES
- Flat mounting
- Easy adjustment and maintenance
- Convenient access to tools
- Simple pipe connection system (J-Kit)
- Easy impeller replacement
- Simple, clean bleed 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 calipers, 1 x flat-mount adapter 140mm/160mm, 2 x Resin brake pads without cooling fins, 2 x SM-BH90-JK-SS brake hose 950mm / 1700mm (can be cut to length), 4 x caliper mounting bolts (2 x 25mm for rear), 2 x hose connection kit
- J-Kit – The SM-BH90-JK-SS brake hoses are filled with mineral oil and pre-fitted to the BR-RX820 brake calipers!
Product features
- Application: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: ST-RX825
- Type: Dual-Control (STI)
- Mounting: left/right
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Visual gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23 .8 mm/24.2 mm
- Brake type: Hydraulic braking system (disc brakes)
- Brake caliper: BR-RX820
- Brake caliper mount: Flat-mount
- Brake pads: Resin without cooling fins
- Brake hose: SM-BH90-JK-SS front 950 mm / rear 1700 mm (can be shortened)
- One-way bleed valve: Yes
- Brake fluid: Mineral oil
- Recommended brake disc: SM-RT64 , SM-RT70, SM-RT800
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1 each
- Number of E-Tube connections: 0
- Di2 wireless chip: Yes
- Battery: 2 x CR1632
Material
- Levers: Aluminium
- Brake caliper: Aluminium
Colour
- Series color
Weight
- approx. 415g/ST-RX825 pair | 267g/BR-RX820 pair (manufacturer’s specification)
Shimano GRX Di2 FD-RX825 2x12-speed front derailleur (solder-on)
The SHIMANO GRX Di2 RX-825-F 2 x 12-speed front derailleur offers precise and coordinated shifting. Features include a 2.5 mm outwardly offset chainline, which provides greater tyre clearance for riding on mixed terrain.
Features
- Powerful, precise and smooth front derailleur performance
- Programmed chain guidance control via automatic trimming
- SHIMANO SYNCHRONISED SHIFT
- Manual, fully and semi-synchronised shifting modes
- Chainline +2.5 mm compared to conventional road bike front derailleurs
- Compatible with tyres up to 42 mm
- Greater wheel clearance
- 17-tooth gear range
Product features
- Intendeduse: Gravel, cyclocross
- Groupset: GRX Di2 RX825
- Model: FD-RX825-F
- Mounting: Solder-on
- Cablerouting: Down-pull
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Largest chainring: 48 teeth
- Total tooth capacity: 17 teeth
- Compatible chain: 12-speed HG
- Chainstay angle: 63–66°
- Chainline: 47 mm
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1
- Number of E-Tube connections: 0
- Di2 wireless chip: No
Material
- Aluminium
- Steel
- Glass-fibre-reinforced plastic
Colour
- Series color
Weight
- approx. 142g (manufacturer’s specification)
Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
The SHIMANO GRX Di2 RD-RX825 2 x 12-speed rear derailleur with integrated chain stabiliser ensures quiet, reliable and precise shifting on mixed terrain. For riding on smooth surfaces, the chain stabiliser can be deactivated using the ON/OFF switch on the rear derailleur. The RD-RX825 rear derailleur is compatible with cassettes featuring a maximum of 36 teeth on the largest sprocket.
Features
- Quiet and reliable shifting on uneven terrain
- Adjustable chain stabiliser prevents chain chattering and derailment
- SHIMANO SHADOW RD+
- Smooth and reliable shifting across varying terrain
- ON/OFF switch for the stabiliser to adapt to the terrain
- Compact design with an integrated unit for wireless signal transmission, a charger and a switch
- LED status indicator
- Battery indicator
- Pairing
- Setup mode, etc.
Product features
- Intendeduse: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: RD-RX825
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Compatible chain: 12-speed HG
- Max. teeth on largest sprocket: 36 teeth
- Min. teeth on large sprocket: 34 teeth
- Max. teeth on small sprocket: 11 teeth
- Max. teeth on small sprocket: 11 teeth
- Max. front sprocket difference: 17 teeth
- Total capacity: 40 teeth
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1
- Number of E-Tube connections: 0
- Di2 wireless chip: Yes
Material
- Aluminium
- Steel
- Glass-fibre-reinforced plastic
Colour
- 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 groupsets. This advanced drivetrain is 100% performance-oriented and, thanks to HYPERGLIDE+ technology, represents a genuine revolution. 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 smooth operation on any terrain
- Revised 12-speed gear ratio for first-class efficiency and optimum acceleration in all racing situations
- Faster, smoother shifting under maximum pedalling force
- Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies
Product features
- Application: 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
- Gears: 12-speed
- Recommended chain: CN-M8100 HG 12-speed
Gear range
- 11-34 (11-12-13-14-15-17-19-21-24-27-30-34 teeth)
Material
- Sprocket carrier: aluminium
- Sprocket: Steel
- Retaining ring: aluminium
Weight
- approx. 345g/11-34 (manufacturer’s specification)
Shimano CN-M8100 12-speed chain, 120 links with quick-link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting performance and a smoother ride – even on rough terrain. The SM-CN910-12 Quick-Link fastener, which is also new, makes installation easy.
Features
- Special chain design for new drivetrain components
- Improved chain guidance with a wider section at the end of the inner plate, which holds the chain in place on both the front derailleur and the cassette sprocket
- Improved shifting performance
- Easy installation
- Smoother ride, even on rough terrain
- Compatible with the new generation of drivetrain components
- Supplied with the user-friendly Quick-Link (SM-CN910-12)
- Quick-Link pliers for fitting and removal (TL-CN10) – Not included!
Product features
- Applications: MTB, gravel, cyclocross
- Model: CN-M8100
- Front derailleur: 1/2-speed
- Rear derailleur speeds: 12-speed
- Type: HG
- Hollow pin: No
- Coating on outer cage: SIL-TEC
- Innerlink coating: Chromizing
- Closure: Quick-Link SM-CN910-12
Links
- 120
Shimano RT-CL800 Centre-Lock brake discs 160mm
SHIMANO’s compact and lightweight RT-CL800 brake discs feature exceptionally rapid heat dissipation thanks to the ICE TECHNOLOGIES FREEZA thermal management system. SHIMANO’s CENTER LOCK design makes fitting and removing brake discs a breeze.
Features
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
- 140mm and 160mm – ideal for road bikes and gravel bikes
Product features
- Intendeduse: Road bikes , gravel bikes
- Groupset: Ultegra, GRX
- Model: RT-CL800
- Mounting: Centre-Lock
- Compatible pads: Metal / Resin (plastic)
Diameter
- 160 mm
Material
- Rotor: Stainless steel / Aluminium
- Retaining ring: Aluminium
Technologies
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
The innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has been proven over many years. The main difference between the systems is that shifting is no longer carried out mechanically, but electronically. This electronic gear-changing system has been extensively tested in recent years by several professional cyclists under every conceivable condition, e.g. in rain, mud, extreme cold, on cobblestones and even when these factors are combined. Shifting is carried out at the simple touch of a button. No physical effort is required to shift gears, which offers significant advantages as the rider maintains a firm grip on the handlebars at all times and can concentrate on riding without being distracted by the shifting process. The gear-changing system enables precise and effortless gear changes in all situations, even with cold hands or when the rider is completely exhausted. Furthermore, gear-changing performance can no longer be impaired by dirty or stretched cables, as the gear-changing signal is transmitted electronically. The control buttons operate 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 power to all components via ‘plug-and-play’ connections. E-Tube is resistant to corrosion, stretching and frost, and requires minimal maintenance. The SMPCE1 establishes the connection between the PC and the components to update the firmware. Digital devices remain up to date through firmware updates and offer improved performance.
Shimano Shadow RD+
Smooth operation and fewer distractions. The rear derailleur stabiliser reduces chain slap. A simple solution to prevent the chain from coming off. Lighter and more efficient than chain guides with rollers.
Shimano GRX Di2
- Manufacturer number: RX8252CX81134SEB
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
High Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
Shimano GRX Di2 RX825 2x12-speed Group Disc 160/160mm TOP-DEAL
Contents - Shimano GRX Di2 RX825 2x12-speed groupset + 160/160mm disc brakes
- 1 x Shimano GRX FC-RX820 2x12-speed crankset 48/31 (select variant)
- 1 x Shimano SM-BB72-41B Hollowtech II Press-Fit 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 (solder-on)
- 1 x Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
- 1 x Shimano CS-R8101 12-speed cassette 11-34, including retaining ring
- 1 x Shimano CN-M8100 12-speed chain, 120 links with quick-link
- 1 x Shimano BT-DN300 Di2 battery for fitting inside the seatpost
- 1 x Shimano EW-EC300 USB Type A charging cable (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 Centre-Lock brake discs, 160 mm, including lock ring
For freedom on the bike: the GRX Di2 RX825 2x12-speed disc groupset from Shimano
Gravel cycling shouldn’t be complicated. The appeal of this cycling discipline – with its drop bars and unpaved roads – lies in its simplicity, openness and sense of adventure. No ride is impossible. Everyone can join in. Your kit should be functional and reliable, without breaking the bank. That’s why you’ll love the latest version of GRX, Shimano’s groundbreaking and industry-first gravel-specific groupset, whether you’re a seasoned gravel veteran or a newcomer to 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-optimised 48/31 or 46/30 chainring combination at the front and an 11-34 or 11-36 cassette, this drivetrain offers an extremely wide gear range, allowing you to ride at a comfortable cadence, whether you’re cycling on the flat, facing endless dirt roads or tackling a massive off-road climb.
Alongside this range of gravel-optimised gear ratios come the new ST-RX825 brake/shift levers. The new lever design has been specifically developed for use with flare handlebars, which play a key role in gravel riding. It features a non-slip surface texture and significantly improved ergonomics, which reduce the pressure on your palms. Taken together, these changes enhance comfort and control, allowing you to tackle tricky terrain with confidence or focus on the gravel track ahead.
This setup offers precise front and rear shifting and integrated SHADOW-PLUS chain stabilisation for ultimate reliability on bumpy terrain. The gravel-specific 2x12 option provides a closer-spaced rear cassette, ideal for subtle cadence adjustments during races 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 synchronised shifting assist modes – SEMI-SYNCHRO or FULL-SYNCHRO – which feel just like having your own personal assistant! In SEMI-SYNCHRO mode, the rear derailleur automatically adjusts to avoid large jumps in gear ratio, allowing you to maintain your cadence and rhythm. In FULL-SYNCHRO mode, the rear derailleur and front derailleur work together seamlessly, ensuring you’re always in the right gear and don’t have to worry about a thing. Seamless communication with the rear derailleur, combined with programmed chain guidance control, minimises the risk of the chain coming off.
In the E-TUBE app, you can select between fully and semi-synchronised shifting functions. Thanks to the digital precision of the electronic shifting system and the 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 crankset 48/31
The new GRX FC-RX820-2 HOLLOWTECH II 2 x 12-speed crankset offers the perfect balance of low weight and high efficiency for riding on mixed terrain. The gear ratio options are tailored to the specific demands of gravel riding and ensure a smooth cadence thanks to closer gear spacing.
Features
- Optimal gear ratios for varied terrain and different riding styles
- A gear ratio tailored to gravel riding helps maintain your riding rhythm even on uneven terrain with wider tyres
- Wide gear range at the front
- 17-tooth difference
Product features
- Intendeduse: Gravel, cyclocross
- Groupset: GRX
- Model: FC-RX820-2
- Ratio: 48/31 teeth
- Q-factor: 151 mm
- Body width: 68 / 70 mm
- Front derailleur: 2-speed
- Rear gears: 12-speed
- Mounting: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crankset: Yes
- Bore diameter: 110/80 mm
- Chainline: 47 mm
- Recommended PressFit bottom bracket: SM-BB72
- Recommended BSA bottom bracket: SM-BBR60
Crank arm length (select variant)
- 170 mm
- 172.5 mm
Material
- Cranks: aluminium, anodised
- Crankset axle: steel, plated
- Chainrings: Anodisedaluminium
Colour
- 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 key priority for gravel riders is a reliable braking system with sufficient power reserves; the new Shimano GRX Di2 2 x 12-speed STI levers ST-RX825, paired with BR-RX820 flat-mount calipers for hydraulic disc brakes, are characterised by outstanding braking performance, helping you maintain control on steep, challenging or even unexpected descents.
Features
- Wireless Di2 connectivity
- Tidy cockpit: the wireless connection enhances the bike’s aesthetics and enables lightning-fast gear changes
- Long-lasting. Powered by two CR1632 batteries (battery life: 3.5 to 4 years)
- Three Di2 buttons per lever for customisation via the E-TUBE PROJECT Cyclist app
- Compatible with satellite shifters
- Greater control on varied terrain
- Ergonomics of the lever and mount optimised for gravel riding
- Non-slip brake lever
- Shifting is just as smooth as on high-end road systems
- Don’t be afraid to ride on uneven terrain
- Excellent heat dissipation
- ICE TECHNOLOGIES
- Flat mounting
- Easy adjustment and maintenance
- Convenient access to tools
- Simple pipe connection system (J-Kit)
- Easy impeller replacement
- Simple, clean bleed 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 calipers, 1 x flat-mount adapter 140mm/160mm, 2 x Resin brake pads without cooling fins, 2 x SM-BH90-JK-SS brake hose 950mm / 1700mm (can be cut to length), 4 x caliper mounting bolts (2 x 25mm for rear), 2 x hose connection kit
- J-Kit – The SM-BH90-JK-SS brake hoses are filled with mineral oil and pre-fitted to the BR-RX820 brake calipers!
Product features
- Application: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: ST-RX825
- Type: Dual-Control (STI)
- Mounting: left/right
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Visual gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23 .8 mm/24.2 mm
- Brake type: Hydraulic braking system (disc brakes)
- Brake caliper: BR-RX820
- Brake caliper mount: Flat-mount
- Brake pads: Resin without cooling fins
- Brake hose: SM-BH90-JK-SS front 950 mm / rear 1700 mm (can be shortened)
- One-way bleed valve: Yes
- Brake fluid: Mineral oil
- Recommended brake disc: SM-RT64 , SM-RT70, SM-RT800
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1 each
- Number of E-Tube connections: 0
- Di2 wireless chip: Yes
- Battery: 2 x CR1632
Material
- Levers: Aluminium
- Brake caliper: Aluminium
Colour
- Series color
Weight
- approx. 415g/ST-RX825 pair | 267g/BR-RX820 pair (manufacturer’s specification)
Shimano GRX Di2 FD-RX825 2x12-speed front derailleur (solder-on)
The SHIMANO GRX Di2 RX-825-F 2 x 12-speed front derailleur offers precise and coordinated shifting. Features include a 2.5 mm outwardly offset chainline, which provides greater tyre clearance for riding on mixed terrain.
Features
- Powerful, precise and smooth front derailleur performance
- Programmed chain guidance control via automatic trimming
- SHIMANO SYNCHRONISED SHIFT
- Manual, fully and semi-synchronised shifting modes
- Chainline +2.5 mm compared to conventional road bike front derailleurs
- Compatible with tyres up to 42 mm
- Greater wheel clearance
- 17-tooth gear range
Product features
- Intendeduse: Gravel, cyclocross
- Groupset: GRX Di2 RX825
- Model: FD-RX825-F
- Mounting: Solder-on
- Cablerouting: Down-pull
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Largest chainring: 48 teeth
- Total tooth capacity: 17 teeth
- Compatible chain: 12-speed HG
- Chainstay angle: 63–66°
- Chainline: 47 mm
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1
- Number of E-Tube connections: 0
- Di2 wireless chip: No
Material
- Aluminium
- Steel
- Glass-fibre-reinforced plastic
Colour
- Series color
Weight
- approx. 142g (manufacturer’s specification)
Shimano GRX Di2 RD-RX825 2x12-speed rear derailleur
The SHIMANO GRX Di2 RD-RX825 2 x 12-speed rear derailleur with integrated chain stabiliser ensures quiet, reliable and precise shifting on mixed terrain. For riding on smooth surfaces, the chain stabiliser can be deactivated using the ON/OFF switch on the rear derailleur. The RD-RX825 rear derailleur is compatible with cassettes featuring a maximum of 36 teeth on the largest sprocket.
Features
- Quiet and reliable shifting on uneven terrain
- Adjustable chain stabiliser prevents chain chattering and derailment
- SHIMANO SHADOW RD+
- Smooth and reliable shifting across varying terrain
- ON/OFF switch for the stabiliser to adapt to the terrain
- Compact design with an integrated unit for wireless signal transmission, a charger and a switch
- LED status indicator
- Battery indicator
- Pairing
- Setup mode, etc.
Product features
- Intendeduse: Gravel, Cyclocross
- Groupset: GRX Di2 RX825
- Model: RD-RX825
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Front derailleur speeds: 2-speed
- Rear derailleur speeds: 12-speed
- Compatible chain: 12-speed HG
- Max. teeth on largest sprocket: 36 teeth
- Min. teeth on large sprocket: 34 teeth
- Max. teeth on small sprocket: 11 teeth
- Max. teeth on small sprocket: 11 teeth
- Max. front sprocket difference: 17 teeth
- Total capacity: 40 teeth
- Compatible power cable: EW-SD300
- E-Tube Project firmware update: Yes
- Number of E-Tube connectors: 1
- Number of E-Tube connections: 0
- Di2 wireless chip: Yes
Material
- Aluminium
- Steel
- Glass-fibre-reinforced plastic
Colour
- 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 groupsets. This advanced drivetrain is 100% performance-oriented and, thanks to HYPERGLIDE+ technology, represents a genuine revolution. 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 smooth operation on any terrain
- Revised 12-speed gear ratio for first-class efficiency and optimum acceleration in all racing situations
- Faster, smoother shifting under maximum pedalling force
- Compatible with HG Spline L2 road bike 12-speed and HG Spline L road bike 12/11-speed freehub bodies
Product features
- Application: 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
- Gears: 12-speed
- Recommended chain: CN-M8100 HG 12-speed
Gear range
- 11-34 (11-12-13-14-15-17-19-21-24-27-30-34 teeth)
Material
- Sprocket carrier: aluminium
- Sprocket: Steel
- Retaining ring: aluminium
Weight
- approx. 345g/11-34 (manufacturer’s specification)
Shimano CN-M8100 12-speed chain, 120 links with quick-link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting performance and a smoother ride – even on rough terrain. The SM-CN910-12 Quick-Link fastener, which is also new, makes installation easy.
Features
- Special chain design for new drivetrain components
- Improved chain guidance with a wider section at the end of the inner plate, which holds the chain in place on both the front derailleur and the cassette sprocket
- Improved shifting performance
- Easy installation
- Smoother ride, even on rough terrain
- Compatible with the new generation of drivetrain components
- Supplied with the user-friendly Quick-Link (SM-CN910-12)
- Quick-Link pliers for fitting and removal (TL-CN10) – Not included!
Product features
- Applications: MTB, gravel, cyclocross
- Model: CN-M8100
- Front derailleur: 1/2-speed
- Rear derailleur speeds: 12-speed
- Type: HG
- Hollow pin: No
- Coating on outer cage: SIL-TEC
- Innerlink coating: Chromizing
- Closure: Quick-Link SM-CN910-12
Links
- 120
Shimano RT-CL800 Centre-Lock brake discs 160mm
SHIMANO’s compact and lightweight RT-CL800 brake discs feature exceptionally rapid heat dissipation thanks to the ICE TECHNOLOGIES FREEZA thermal management system. SHIMANO’s CENTER LOCK design makes fitting and removing brake discs a breeze.
Features
- First-class and consistent braking performance
- New ICE TECHNOLOGIES FREEZA construction for even faster heat dissipation
- 140mm and 160mm – ideal for road bikes and gravel bikes
Product features
- Intendeduse: Road bikes , gravel bikes
- Groupset: Ultegra, GRX
- Model: RT-CL800
- Mounting: Centre-Lock
- Compatible pads: Metal / Resin (plastic)
Diameter
- 160 mm
Material
- Rotor: Stainless steel / Aluminium
- Retaining ring: Aluminium
Technologies
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
The innovative shifting technology of the SEIS is still based on the SHIMANO INDEX SYSTEM (SIS), whose outstanding shifting performance has been proven over many years. The main difference between the systems is that shifting is no longer carried out mechanically, but electronically. This electronic gear-changing system has been extensively tested in recent years by several professional cyclists under every conceivable condition, e.g. in rain, mud, extreme cold, on cobblestones and even when these factors are combined. Shifting is carried out at the simple touch of a button. No physical effort is required to shift gears, which offers significant advantages as the rider maintains a firm grip on the handlebars at all times and can concentrate on riding without being distracted by the shifting process. The gear-changing system enables precise and effortless gear changes in all situations, even with cold hands or when the rider is completely exhausted. Furthermore, gear-changing performance can no longer be impaired by dirty or stretched cables, as the gear-changing signal is transmitted electronically. The control buttons operate 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 power to all components via ‘plug-and-play’ connections. E-Tube is resistant to corrosion, stretching and frost, and requires minimal maintenance. The SMPCE1 establishes the connection between the PC and the components to update the firmware. Digital devices remain up to date through firmware updates and offer improved performance.
Shimano Shadow RD+
Smooth operation and fewer distractions. The rear derailleur stabiliser reduces chain slap. A simple solution to prevent the chain from coming off. Lighter and more efficient than chain guides with rollers.
Shimano GRX Di2
- Manufacturer number: RX8252CX81134SEB
3-77 Oimatsu-cho, Sakai-ku, Sakai-shi
590-8577 Osaka
Japan
https://www.shimano.com
High Tech Campus 92
NL-5656 Eindhoven
Netherlands
[email protected]
https://www.shimano.com
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