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:

Crankset: Shimano FC-M7100 12-Speed

• Rear Speeds: 12
• Compatible Chain: HG 12-speed
• Chain Line (mm): 49.7
• P.C.D. (mm): 110
• Spider/Gear Arms: 4
• Chainring Combination: 38T, 40T
• Q-Factor (mm): 151

Shifter: Shimano GRX ST-RX610 12-Speed Right Hand STI Lever with BR-RX400 Caliper

• Gravel-specific ergonomics, optimized gearing, rugged reliability, and quiet drivetrain for gravel adventures
• Rear Speed: 12
• Cable: OT-SP41 (lever side), OT-RS900 (rear derailleur side)
• Brake Hose (kit): SM-BH90-JK-SSR
• Hose Joint: Straight
• Brake Hose Colour (kit): Black
• Recommended Brake Caliper: BR-RX400
• Oil: Shimano Mineral
• Reach Adjust
• Free Stroke Adjust
• Clamp Diameter (mm): 23.8-24.2

Shifter: Shimano GRX BL-RX610 Left Hand Hydraulic Disc Brake Lever with BR-RX400 Caliper

• Designed for gravel-specific ergonomics and quiet, stable performance
• Rear Speed: 12
• Cable: OT-SP41 (lever side), OT-RS900 (rear derailleur side)
• Brake Hose (kit): SM-BH90-JK-SSR
• Hose Joint: Straight
• Brake Hose Colour (kit): Black
• Recommended Brake Caliper: BR-RX400
• Oil: Shimano Mineral
• Reach Adjust
• Free Stroke Adjust
• Clamp Diameter (mm): 23.8-24.2

Chain: Shimano CN-M7100 12-Speed

• Design: Super narrow, lightweight 12-speed Hyperglide+ chain for smooth shifts and maximum durability
• Performance: A reliable chain for all riding styles, with Sil-Tec surface treatment (PTFE plating) for reduced friction and increased durability
• Link Length: 126 links (can be shortened using a chain breaker)

Cassette: Shimano CS-M7100 12-Speed Cassette (10-45T & 10-51T available)

• SLX M7100 12-speed Micro Spline MTB cassette featuring lightweight, minimal sprocket carrier design
• Gearing: Close-ratio for efficient energy use and cadence control
• Design: Sprockets cut away and drilled to reduce weight without sacrificing rigidity
• Compatibility: For use with 12-speed MTB chains

Rear Derailleur: Shimano GRX RD-RX822 12-Speed Single Rear Derailleur

• Features: Integrated chain stabilizer for quieter shifting, better ground clearance, and secure chain management on rough terrain
• Compatible with 10-45T and 10-51T 12-speed Shimano MTB cassettes
• Chain Compatibility: 12-speed Hyperglide+ chains
• Wide Gear Ratio: Available in 10-45T & 10-51T (for GS or SGS cage respectively)
• Use: Designed for single chainsets

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.