Equipment > Components > Groups > Shimano Gravel Groups
GRX-820 Mechanical 1x 12-Speed Kit
Description
This GRX 820 Mechanical 12-Speed kit is an Excel Sports package of several specific GRX items required to build an 1x12 drop bar bike. Drivetrain and braking-wise, this package has everything you need except items selected by rider need/preference: a crankset, 24mm Shimano compatible bottom bracket, which will be specific to your frame, and disc brake rotors. We are offering 2 cassette options, Shimano 10-45T or 10-51T 12-Speed. Given the challenge of sourcing GRX components, we are assembling these kits as items become available. Please know that some kits will come with the Shimano-boxed Lever with Caliper, while others may come with individually packaged lever, caliper, and hydraulic hose kit items. Detailed information is listed below.
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- GRX 820 series 1x12-speed mechanical shift/hydraulic disc brake components sold as a partial kit (without: crankset, bottom bracket, disc rotors)
- Contains: Right Mechanical Shift/Hydraulic Brake Dual Control Lever, Rear Caliper, Hydraulic Hose Kit | GS or SGS Rear Derailleur for 1x use, | 12s Chain | 12s 10-45T or 10-51T Cassette
- You will still need: GRX 1x crankset, 24mm ID Shimano compatible Bottom Bracket that fits your frame | 2 Disc Brake Rotors (CL800 or equivalent) in your desired size(s) or another brand/model of comparable rotors
- GRX has been strength and durability optimized for the rough surfaces, debris, dust, and rigors of gravel use
- Levers feature ergonomic and tactile shapes and features for greater control, rider connection
- HYPERGLIDE improves shifting both up and down the cassette, even under maximum pedaling load
- Drivetrain features optimized progressive gearing options engineered for performance, speed without sacrificing drivetrain efficiency
Detailed Group Contents for 1x12 Speed Mechanical
- GRX ST-RX820 Right Dual Control Lever and Caliper, either as a set, or individually packaged
- 12-spd Dual Control Mechanical Shift / Hydraulic Disc Brake lever for GRX drivetrains
- Same light shifting operation as Ultegra road systems, SIS indexing; optimized for durability and rider control
- Hood and lever shapes feature gravel specific ergonomics, texture
- Responsive lever throw actions and light but positive engagement feel
- Raised hood head prevents hand misalignment and slippage
- Anti-slip lever texture and brake lever coating
- Recessed finger notch prevents upward slipping
- Includes: Polymer-coated SS cable, OT-SP41 housing, Right lever set includes OT-RS900 loop specifically for use with rear derailleur- required for proper rear shifts
- GRX specific lever shape and design-won't match non-GRX 800 series mechanical levers
- Brake lever features ServoWave action, Reach Adjust, Free Stroke
- Faster initial bite point followed by wider control area; modulate braking forces more easily, precisely
- Calipers have refined design, improved performance from Servo Wave technology of brake lever system
- Mineral oil fluid system, with easy to service/bleed design
- Rear Flat Mount BR-RX820 hydraulic brake caliper with IceTech finned disc pads
- Packaged SM-BH90-JK-SSR Hydraulic Hose Kit and fittings
- GRX BL-RX820 Left Brake Lever and Disc Caliper / for 1x12-speed w/ right lever-only shifting
- Left hydraulic disc brake lever for GRX 1x drivetrains
- Hood and lever shapes feature gravel specific ergonomics, texture
- Responsive lever pull actions and light but positive engagement feel
- Raised hood head prevents hand misalignment and slippage
- Anti-slip lever texture and brake lever coating
- Recessed finger notch prevents upward slipping
- GRX specific lever shape and design-won't match non-GRX 800 series mechanical levers
- Brake lever features ServoWave action, Reach Adjust, Free Stroke
- Faster initial bite point followed by wider control area; modulate braking forces more easily, precisely
- Calipers have refined design, improved performance from Servo Wave technology of brake lever system
- Mineral oil fluid system, with easy to service/bleed design
- Front Flat Mount BR-RX810 hydraulic brake caliper; 2-piston with IceTech finned disc pads
- Features: Straight hose joint, pad axle mount, 4mm pad fixing tool size (screw fixing pin/snap ring)
- Set with SM-BH90-JK-SSR hydraulic hose system and fittings
- GRX RD-R822 GS(10-45T) or SGS(10-51T) Rear Derailleur
- Silent and uninterrupted rear shifting on rough terrain
- Longer cage and different pulley wheel sizing; for 1x mechanical drivetrain only
- Shimano Shadow+ design is compact to the frame; with clutch tensioner
- Adjustable chain stabilizer prevents chain slapping and drops
- Gravel-tuned clutch tension for rough surfaces; with on/off feature
- Four fluoric coated link bushings
- Compatible with Shimano LINKGLIDE, HG 12-speed chains
- Compatible with 10-51, 10-45 12-speed Shimano MTB cassettes
- CS-M8100 12-Speed Cassette Deore XT, 10-45T or 10-51T
- Two aluminum spider arms deliver strength, at lighter weigh, with fewer individual cogs
- DYNA-SYS12 cassette delivers precise shifting even in the most demanding gearing situations
- Rhythm step gear progression offers smooth, smartly progressive cog sizes for the range
- CN-M8100-12 speed XT/Ultegra Chain
- Directional 12-speed chain delivers smooth and reliable shifting performance
- SIL-TEC treatment on the roller link plates and pin link plates for increased durabilityFinish: GRX Gray
- Sold as a package- absolutely NO exchanges, trades, omissions; will not be broken up for sale