Product information "GRX RX820 1x12-speed Group Disc"
Scope of delivery - Shimano GRX RX820 1x12-speed disc groupset
- 1 x Shimano GRX FC-RX820 FC-1x12-speed crankset (gradation and crank arm length - select variant)
- 1 x Shimano GRX BL-RX820-L+BR-RX820 front disc brake
- 1 x Shimano GRX ST-RX820+BR-RX820 12-speed rear disc brake
- 1 x Shimano GRX RD-RX822 1x12-speed rear derailleur
- 1 x Shimano CS-M8100 10-45 / CS-M8200 10-51 12-speed cassette incl. lockring (select variant)
- 1 x Shimano CN-M8100 12-speed chain 126 links with Quick-Link
Bottom bracket SM-BBR60 BSA / Pressfit SM-BB72 and brake discs RT-MT800 not included!
For your riding freedom: the GRX RX820 1x12-speed disc groupset from Shimano
Gravel biking shouldn't be complicated. The appeal of this cycling discipline with its drop bars 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 the GRX, Shimano's groundbreaking and industry-first gravel-specific component group, will inspire you whether you're a seasoned gravel veteran or a newcomer to the rough roads and trails.
If you're aiming for personal best times on your next tour or want to compete with others in a race, you'll appreciate the gear steps of the RX820 1x12 setup with a 10-45 cassette and a 40- or 42-tooth chainring. Just like its 11-speed predecessor, the RX820 offers smooth, reliable shifting, but now has a wider range and an extra sprocket, making it easier to find the optimal cadence to maintain your position in the pack. This system uses a mid-cage rear derailleur with an integrated SHADOW PLUS chain stabiliser for quieter shifting and more secure chain control on rough terrain. Stop worrying about the next gear change and concentrate on leaving the competition behind.
If all-day - or multi-day - adventures with lots of climbs are your thing, the new RX820 1x12 UNSTOPPABLE option with SHIMANO's wide range of 10-51T cassettes is ideal. In combination with a 40" or 42" chainring, you'll never run out of gears, even on the steepest village road or in the high mountains. Like the 1x12 version with 10-45T, this groupset also has an integrated SHADOW-PLUS chain stabiliser for optimum chain safety and an ON/OFF switch, which makes it quick and easy to remove the wheel in the event of a puncture.
Both 1x12 options use Micro Spline, Shimano's lightweight aluminium freehub design that combines seamlessly with a small 10-tooth sprocket and features smaller, more widely spaced teeth to reduce sprocket wear. The 1x12 gravel crankset is offered in three crank arm lengths, allowing you to choose the ideal Shimano GRX setup for your needs and riding style.
Alongside this range of gravel-optimised gear ratio options are the new ST-RX820 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 is based on a non-slip surface structure and significantly improved ergonomics that reduce the pressure on your palms. Taken together, these changes increase comfort and control so you can fearlessly tackle tricky terrain or focus on the gravel track ahead.
The new GRX brake levers feature Shimano's Dual Control system with lightweight and responsive 12-speed mechanical shifting. While the left lever of the 2x12 GRX groupset offers Shimano's unrivalled smooth front derailleur shifting, the new 1x12 groupsets have two left lever options: a brake-only lever model and a dropper-specific option that seamlessly integrates brake and dropper post operation for quick and effortless function.
Shimano GRX FC-RX820 1x12-speed crankset
The new GRX FC-RX820-1 HOLLOWTECH II 1x12-speed crankset offers the perfect synthesis of low weight and high efficiency for riding in mixed terrain. The gear ratio options cater for the special requirements of gravel and ensure a consistent rhythm with tighter gear steps. The gear ratio options cater for the special requirements of off-road riding and ensure a consistent rhythm with tighter gear steps. The 1 x 12-speed crankset is available with 40 and 42-tooth chainrings and in crank arm lengths of 170, 172.5 and 175 mm.
Features
- Optimum gear ratio for different surfaces and different riding styles
- Gear ratio tailored to gravel helps to maintain the riding rhythm even on uneven terrain with wider tyres
- Option with 10-45 and 10-51 cassettes for a variety of riding styles
Product features
- Application: Gravel, Cyclocross
- Groupset: GRX
- Model: FC-RX820-1
- Q-Factor: 151mm
- Housing width: 68 / 70mm
- Front gear steps: 1-speed
- Rear gear steps: 12-speed
- Mounting: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crank spider: Yes
- Bolt circle: 110mm
- Chainline: 49.7mm
- Recommended bottom bracket Pressfit: SM-BB72
- Recommended bottom bracket BSA: SM-BBR60
Gradation (select variant)
- 40 teeth
- 42 teeth
Crank arm length (select variant)
- 170mm
- 172.5mm
- 175mm
Material
- Crank arms: Aluminium, anodised
- Crank axle: Steel, plated
- Chainring: anodised aluminium
Colour
- Series color
Weight
- approx. 655g/40/172.5mm | 667g/42/172.5mm (manufacturer's specification)
Shimano GRX BL/ST-RX820 1x12-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 1 x 12-speed BL-RX820-L brake levers / STI levers ST-RX820 with BR-RX820 flat-mount brake calipers for hydraulic disc brakes are characterised by excellent deceleration performance to keep control on steep, demanding or even surprising descents.
Features
- The SHIMANO GRX BL-RX820-L brake lever works with SHIMANO's leading hydraulic disc brakes for more control on mixed terrain
- Left-hand mounting position for 1 x 12-speed shifting system
- More control on changing terrain
- Lever and bracket ergonomics optimised for 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 BL-RX820-L brake lever left, 1 x GRX ST-RX820 12-speed STI unit right, 2 x GRX BR-RX820 flat-mount brake callipers, 1 x flat-mount adapter 140mm/160mm, 2 x brake pads L05A-RF resin with cooling fins, 2 x brake hose SM-BH90-JK-SS 1000mm / 1700mm (can be shortened), 4 x fixing bolt for brake calliper (for rear 2 x 38mm), 2 x cable connection kit, 1 x inner shifter cable (Optislick) 2100mm, 1 x inner shifter cable outer cover SIS OT-SP41 600mm, 1 x inner shifter cable outer cover SIS OT-SP41 300mm, 1 x end caps + end covers
- J-Kit - The SM-BH90-JK-SS brake hoses are filled with mineral oil and pre-assembled on the BR-RX820 brake callipers!
Product features
- Area of application: Gravel, Cyclocross
- Group: GRX
- Model: BL-RX820-L / ST-RX820-R
- Type: Brake lever / Dual-Control (STI)
- Mounting: left/right
- Front gear steps: 1x
- Rear gear steps: 12-speed
- Visual gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23.8mm/24.2mm
- Brake type: Hydraulic brake system (disc brake)
- Brake calliper: BR-RX820
- Brake calliper mount: Flat mount
- Brake pad: L05A-RF Resin with 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 disc: SM-RT64, SM-RT70, SM-RT800
Brake material
- Lever: Aluminium
- Brake caliper: Aluminium
Brake color
- Series color
Weight
- approx. 511.2g/ST-RX820 pair | 267g/BR-RX820 pair (manufacturer's specification)
Shimano GRX RD-RX822 1x12-speed rear derailleur
The SHIMANO GRX RD-RX822 1 x 12-speed rear derailleur with integrated chain stabiliser ensures quiet, reliable and precise shifting on mixed terrain. The GS version is compatible with 10-45-tooth and the SGS version with 10-51-tooth 12-speed SHIMANO MTB cassettes.
Features
- Low-noise and smooth-running shifting system for uneven terrain
- Adjustable chain stabiliser prevents the chain from jumping out
- SHIMANO SHADOW RD+
- Frictionless and reliable shifting with changing ground conditions
- Spring tension adapted to gravel
- Compatible with the latest DUAL-CONTROL shift/brake lever for road bikes
- RD-RX822-GS
- 45 teeth max. large sprocket
- Works with 12-speed 10-45 cassette
- Better ground clearance (shorter cage)
- RD-RX822-SGS
- 51 teeth max. large sprocket
- Works with 12-speed 10-51 cassette
Product features
- Area of application: Gravel, Cyclocross
- Groupset: GRX
- Model: RD-RX822
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Gear steps:
- GS type 1x12-speed (10-45 cassette)
- SGS type 1x12-speed (10-51 cassette)
- Compatible chain: 12-speed HG
- Max. Teeth large sprocket: 45 teeth (GS) / 51 teeth (SGS)
- Min. teeth large sprocket: 45 teeth (GS) / 51 teeth (SGS)
- Max. Teeth small sprocket: 10 teeth
- Min. teeth small sprocket: 10 teeth
- Max. Differential front: 0 teeth
- Total capacity: 35 teeth (GS) / 41 teeth (SGS)
Cage length
- Type-GS medium length
- Type-SGS long
Cage material
- Aluminium
- Steel
- Glass fibre reinforced plastic
Colour
- Series color
Weight
- approx. 290g/GS | 288g/SGS (manufacturer's specification)
Shimano CS-M8100 10-45 / CS-M8200 10-51 12-speed cassette
The Shimano CS-M8100/8200 with Hyperglide+ for faster shifting is the right cassette for the new GRX R820 1 x 12-speed groupset. For the 12-speed cassette, SHIMANO has revised the design of the freehub for the CS-M8100/8200 and uses the new MICRO SPLINE technology.
Features
- Shifting options
- 10-45 (12-speed, Rhythm Step ratio for Cross Country) - CS-M8100
- 10-51 (12-speed, large gear range for Enduro) - CS-M8200
- Hyperglide+ faster shifting, improved speed, shifting efficiency and smoothness on any terrain
- Aluminium and steelmaterial
- BEAM SPIDER construction Faster acceleration
- MICRO SPLINE FREEHUB cassette hub integrates seamlessly with small upper 10-tooth sprockets
Product features
- Application: Gravel, Cyclocross
- Modell: CS-M8100-12/CS-M8200-12
- Type: Hyperglide+
- Gear steps: 12-speed
- Recommended chain: 12-speed HG
Gradation (select variant)
- 10-45 (10-12-14-16-18-21-24-28-32-36-40-45 teeth)
- 10-51 (10-12-14-16-18-21-24-28-33-39-45-51 teeth)
Gear material
- Aluminium
- Steel
Weight
- approx. 461g - 10-45 (manufacturer's specification)
- approx. 470g - 10-51 (manufacturer's specification)
Shimano CN-M8100 12-speed chain 126 links with Quick-Link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting behaviour and smoother running - even on rough terrain. The SM-CN910-12 quick-link fastener, which is also new, enables simple assembly.
Features
- Special chain design for new drive 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 behaviour
- 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
- Application: 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: Chromising
- Closure: Quick-Link SM-CN910-12
Links
- 126
Shimano GRX 12-speed
- Manufacturer number: GRX8201X12104517040
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 RX820 1x12-speed Group Disc
Scope of delivery - Shimano GRX RX820 1x12-speed disc groupset
- 1 x Shimano GRX FC-RX820 FC-1x12-speed crankset (gradation and crank arm length - select variant)
- 1 x Shimano GRX BL-RX820-L+BR-RX820 front disc brake
- 1 x Shimano GRX ST-RX820+BR-RX820 12-speed rear disc brake
- 1 x Shimano GRX RD-RX822 1x12-speed rear derailleur
- 1 x Shimano CS-M8100 10-45 / CS-M8200 10-51 12-speed cassette incl. lockring (select variant)
- 1 x Shimano CN-M8100 12-speed chain 126 links with Quick-Link
Bottom bracket SM-BBR60 BSA / Pressfit SM-BB72 and brake discs RT-MT800 not included!
For your riding freedom: the GRX RX820 1x12-speed disc groupset from Shimano
Gravel biking shouldn't be complicated. The appeal of this cycling discipline with its drop bars 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 the GRX, Shimano's groundbreaking and industry-first gravel-specific component group, will inspire you whether you're a seasoned gravel veteran or a newcomer to the rough roads and trails.
If you're aiming for personal best times on your next tour or want to compete with others in a race, you'll appreciate the gear steps of the RX820 1x12 setup with a 10-45 cassette and a 40- or 42-tooth chainring. Just like its 11-speed predecessor, the RX820 offers smooth, reliable shifting, but now has a wider range and an extra sprocket, making it easier to find the optimal cadence to maintain your position in the pack. This system uses a mid-cage rear derailleur with an integrated SHADOW PLUS chain stabiliser for quieter shifting and more secure chain control on rough terrain. Stop worrying about the next gear change and concentrate on leaving the competition behind.
If all-day - or multi-day - adventures with lots of climbs are your thing, the new RX820 1x12 UNSTOPPABLE option with SHIMANO's wide range of 10-51T cassettes is ideal. In combination with a 40" or 42" chainring, you'll never run out of gears, even on the steepest village road or in the high mountains. Like the 1x12 version with 10-45T, this groupset also has an integrated SHADOW-PLUS chain stabiliser for optimum chain safety and an ON/OFF switch, which makes it quick and easy to remove the wheel in the event of a puncture.
Both 1x12 options use Micro Spline, Shimano's lightweight aluminium freehub design that combines seamlessly with a small 10-tooth sprocket and features smaller, more widely spaced teeth to reduce sprocket wear. The 1x12 gravel crankset is offered in three crank arm lengths, allowing you to choose the ideal Shimano GRX setup for your needs and riding style.
Alongside this range of gravel-optimised gear ratio options are the new ST-RX820 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 is based on a non-slip surface structure and significantly improved ergonomics that reduce the pressure on your palms. Taken together, these changes increase comfort and control so you can fearlessly tackle tricky terrain or focus on the gravel track ahead.
The new GRX brake levers feature Shimano's Dual Control system with lightweight and responsive 12-speed mechanical shifting. While the left lever of the 2x12 GRX groupset offers Shimano's unrivalled smooth front derailleur shifting, the new 1x12 groupsets have two left lever options: a brake-only lever model and a dropper-specific option that seamlessly integrates brake and dropper post operation for quick and effortless function.
Shimano GRX FC-RX820 1x12-speed crankset
The new GRX FC-RX820-1 HOLLOWTECH II 1x12-speed crankset offers the perfect synthesis of low weight and high efficiency for riding in mixed terrain. The gear ratio options cater for the special requirements of gravel and ensure a consistent rhythm with tighter gear steps. The gear ratio options cater for the special requirements of off-road riding and ensure a consistent rhythm with tighter gear steps. The 1 x 12-speed crankset is available with 40 and 42-tooth chainrings and in crank arm lengths of 170, 172.5 and 175 mm.
Features
- Optimum gear ratio for different surfaces and different riding styles
- Gear ratio tailored to gravel helps to maintain the riding rhythm even on uneven terrain with wider tyres
- Option with 10-45 and 10-51 cassettes for a variety of riding styles
Product features
- Application: Gravel, Cyclocross
- Groupset: GRX
- Model: FC-RX820-1
- Q-Factor: 151mm
- Housing width: 68 / 70mm
- Front gear steps: 1-speed
- Rear gear steps: 12-speed
- Mounting: Hollowtech II
- Compatible chain: 12-speed HG
- 4-arm crank spider: Yes
- Bolt circle: 110mm
- Chainline: 49.7mm
- Recommended bottom bracket Pressfit: SM-BB72
- Recommended bottom bracket BSA: SM-BBR60
Gradation (select variant)
- 40 teeth
- 42 teeth
Crank arm length (select variant)
- 170mm
- 172.5mm
- 175mm
Material
- Crank arms: Aluminium, anodised
- Crank axle: Steel, plated
- Chainring: anodised aluminium
Colour
- Series color
Weight
- approx. 655g/40/172.5mm | 667g/42/172.5mm (manufacturer's specification)
Shimano GRX BL/ST-RX820 1x12-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 1 x 12-speed BL-RX820-L brake levers / STI levers ST-RX820 with BR-RX820 flat-mount brake calipers for hydraulic disc brakes are characterised by excellent deceleration performance to keep control on steep, demanding or even surprising descents.
Features
- The SHIMANO GRX BL-RX820-L brake lever works with SHIMANO's leading hydraulic disc brakes for more control on mixed terrain
- Left-hand mounting position for 1 x 12-speed shifting system
- More control on changing terrain
- Lever and bracket ergonomics optimised for 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 BL-RX820-L brake lever left, 1 x GRX ST-RX820 12-speed STI unit right, 2 x GRX BR-RX820 flat-mount brake callipers, 1 x flat-mount adapter 140mm/160mm, 2 x brake pads L05A-RF resin with cooling fins, 2 x brake hose SM-BH90-JK-SS 1000mm / 1700mm (can be shortened), 4 x fixing bolt for brake calliper (for rear 2 x 38mm), 2 x cable connection kit, 1 x inner shifter cable (Optislick) 2100mm, 1 x inner shifter cable outer cover SIS OT-SP41 600mm, 1 x inner shifter cable outer cover SIS OT-SP41 300mm, 1 x end caps + end covers
- J-Kit - The SM-BH90-JK-SS brake hoses are filled with mineral oil and pre-assembled on the BR-RX820 brake callipers!
Product features
- Area of application: Gravel, Cyclocross
- Group: GRX
- Model: BL-RX820-L / ST-RX820-R
- Type: Brake lever / Dual-Control (STI)
- Mounting: left/right
- Front gear steps: 1x
- Rear gear steps: 12-speed
- Visual gear indicator: no
- Grip width adjustment: Yes, with tool
- Handlebar diameter: 23.8mm/24.2mm
- Brake type: Hydraulic brake system (disc brake)
- Brake calliper: BR-RX820
- Brake calliper mount: Flat mount
- Brake pad: L05A-RF Resin with 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 disc: SM-RT64, SM-RT70, SM-RT800
Brake material
- Lever: Aluminium
- Brake caliper: Aluminium
Brake color
- Series color
Weight
- approx. 511.2g/ST-RX820 pair | 267g/BR-RX820 pair (manufacturer's specification)
Shimano GRX RD-RX822 1x12-speed rear derailleur
The SHIMANO GRX RD-RX822 1 x 12-speed rear derailleur with integrated chain stabiliser ensures quiet, reliable and precise shifting on mixed terrain. The GS version is compatible with 10-45-tooth and the SGS version with 10-51-tooth 12-speed SHIMANO MTB cassettes.
Features
- Low-noise and smooth-running shifting system for uneven terrain
- Adjustable chain stabiliser prevents the chain from jumping out
- SHIMANO SHADOW RD+
- Frictionless and reliable shifting with changing ground conditions
- Spring tension adapted to gravel
- Compatible with the latest DUAL-CONTROL shift/brake lever for road bikes
- RD-RX822-GS
- 45 teeth max. large sprocket
- Works with 12-speed 10-45 cassette
- Better ground clearance (shorter cage)
- RD-RX822-SGS
- 51 teeth max. large sprocket
- Works with 12-speed 10-51 cassette
Product features
- Area of application: Gravel, Cyclocross
- Groupset: GRX
- Model: RD-RX822
- Mounting: Direct mount (conventional)
- Technology: Shadow RD+
- Gear steps:
- GS type 1x12-speed (10-45 cassette)
- SGS type 1x12-speed (10-51 cassette)
- Compatible chain: 12-speed HG
- Max. Teeth large sprocket: 45 teeth (GS) / 51 teeth (SGS)
- Min. teeth large sprocket: 45 teeth (GS) / 51 teeth (SGS)
- Max. Teeth small sprocket: 10 teeth
- Min. teeth small sprocket: 10 teeth
- Max. Differential front: 0 teeth
- Total capacity: 35 teeth (GS) / 41 teeth (SGS)
Cage length
- Type-GS medium length
- Type-SGS long
Cage material
- Aluminium
- Steel
- Glass fibre reinforced plastic
Colour
- Series color
Weight
- approx. 290g/GS | 288g/SGS (manufacturer's specification)
Shimano CS-M8100 10-45 / CS-M8200 10-51 12-speed cassette
The Shimano CS-M8100/8200 with Hyperglide+ for faster shifting is the right cassette for the new GRX R820 1 x 12-speed groupset. For the 12-speed cassette, SHIMANO has revised the design of the freehub for the CS-M8100/8200 and uses the new MICRO SPLINE technology.
Features
- Shifting options
- 10-45 (12-speed, Rhythm Step ratio for Cross Country) - CS-M8100
- 10-51 (12-speed, large gear range for Enduro) - CS-M8200
- Hyperglide+ faster shifting, improved speed, shifting efficiency and smoothness on any terrain
- Aluminium and steelmaterial
- BEAM SPIDER construction Faster acceleration
- MICRO SPLINE FREEHUB cassette hub integrates seamlessly with small upper 10-tooth sprockets
Product features
- Application: Gravel, Cyclocross
- Modell: CS-M8100-12/CS-M8200-12
- Type: Hyperglide+
- Gear steps: 12-speed
- Recommended chain: 12-speed HG
Gradation (select variant)
- 10-45 (10-12-14-16-18-21-24-28-32-36-40-45 teeth)
- 10-51 (10-12-14-16-18-21-24-28-33-39-45-51 teeth)
Gear material
- Aluminium
- Steel
Weight
- approx. 461g - 10-45 (manufacturer's specification)
- approx. 470g - 10-51 (manufacturer's specification)
Shimano CN-M8100 12-speed chain 126 links with Quick-Link
The special design of the Shimano CN-M8100 12-speed chain ensures improved shifting behaviour and smoother running - even on rough terrain. The SM-CN910-12 quick-link fastener, which is also new, enables simple assembly.
Features
- Special chain design for new drive 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 behaviour
- 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
- Application: 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: Chromising
- Closure: Quick-Link SM-CN910-12
Links
- 126
Shimano GRX 12-speed
- Manufacturer number: GRX8201X12104517040
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
Ich habe mir die Gruppe einzeln gekauft, da ich die Bremssättel und die Scheiben nicht benötigt habe. Ich habe sie an meinem Surly Midnight Special mit einem 42er Kettenblatt und einer 10/51 Kassette verbaut und heute die erste Ausfahrt absolviert. Mir gefällt die Laufruhe und die Schaltpräzision sehr. Ich habe auf meinem Focus Atlas die 810er GRX mit 2/12 verbaut und daher einen guten Vergleich. Die 810er ist auch eine sehr gute Gruppe aber es gibt immer Momente wo unter Last die Kette am vorderen Umwerfer schleift. Shimano hat zwar deswegen eine dritte Schaltstufe für den Umwerfer vorgesehen aber die 820er kennt dieses Problem natürlich nicht. Die 820er ist sehr angenehm und stressfrei zu fahren weswegen mir die feinere Gangabstufung der 810er und die etwas höhere Endgeschwindigkeit nicht fehlt. Ich bin mit der 820 sehr zufrieden.
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