Shimano GRX RX800 2 x 11 Groupset
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Shimano GRX Kit Overview
Shimano GRX, designed with gravel-specific ergonomics, optimized gearing, and rugged reliability, offers a quiet, stable drivetrain suited for unpaved adventures. This premium series provides outstanding performance and value with ergonomic designs and gravel-centric gearing.
These are fully boxed UK products.
Included Parts:
Cassette: Shimano Ultegra CS-R8000 11-Speed Road Bike Cassette
- Lightweight 11-speed HG-EV cassette with rigid alloy sprocket carrier for reduced weight and improved shifting performance
- Suitable for road and gravel bikes
- Hyperglide EV sprockets for precise shifting and reduced wear
- Compatible with Shimano HG-style freehubs
- Wide gear range to suit all riding styles
- Compatible with 11-speed HG-EV or HG-X11 chains
Chainset: Shimano GRX FC-RX810 11-Speed Double Chainset
- Optimum gearing for mixed terrains with gravel gear ratios to maintain rhythm over rough surfaces
- Wider range front system with 17T front range
- Gear combination: 48-31T
Chain: Shimano 105 5800 / SLX M7000 CN-HG601 11-Speed Chain
- 116 links with hardened plates and Shimano-designed quick link
- Narrow, lightweight HG-EV design for durability and smooth shifts
- Sil-Tec surface treatment for reduced friction and increased lifespan
- Weight: 257g
Front Derailleur: Shimano GRX FD-RX810 11-Speed Double Front Mech
- Fast, precise shifting performance with wider tire clearance due to a 2.5mm chainline adjustment
- Braze-on fit; compatible with 11-speed HG chains
- Wide range 17T capacity, 46-50T outer chainring
- Weight: 96g
Rear Derailleur: Shimano GRX FD-RX810 11-Speed Shadow+ Double Rear Mech
- Silent and uninterrupted shifting on rough terrain with adjustable chain stabilizer
- SHIMANO SHADOW RD+ design with gravel-tuned clutch tension
- Toggle clutch ON/OFF and stabilizer switch for terrain adaptability
- Maximum front difference: 17T; top sprocket: 11T; low sprocket: Max 34T, Min 30T
- Total capacity: 40T
Shifter/Brake: Shimano GRX ST-RX810/BR-RX810 11-Speed STI Lever & Disc Brake
- GRX hydraulic disc brakes provide control, modulation, and power with minimal effort
- Raised hood design prevents hand misalignment, while anti-slip texture enhances grip
- Weight: 306g
Genuine new, boxed Shimano product (not OEM parts) - Biketart are proud official Shimano stockists.
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