Shimano GRX WH-RX870

Engineered for Dedicated Gravel Riding

This GRX carbon wheel is tuned for tubeless gravel riding with wider tires at lower pressures. A 25 mm internal rim width and refined carbon profile improve lateral tire stability, delivering confident handling and efficiency on fast, rough, and mixed-surface rides.

Features

• HG L2 freehub body compatible with 12-speed 11-30T, 11-34T, and 11-36T cassettes
• MICRO SPLINE freehub body compatible with 12-speed 9-45T, 10-45T, and 10-51T cassettes
• GRX-Specific Carbon Design: SHIMANO’s GRX carbon wheel, engineered to balance rim weight, strength, and profile for gravel riding
• Optimized Rim Width: 25 mm internal width supports gravel tires from 32–50 mm, for confident handling across mixed surfaces
• 32 mm Carbon Rim Profile: Low-profile carbon rim promotes efficient acceleration while maintaining control on uneven surfaces
• Drivetrain Compatibility: Compatible with road 11- and 12-speed drivetrains for varied setups (not compatible with 12-speed Micro Spline cassettes)
• Purpose-Built for Gravel: Carbon rim design tuned for long distances, variable surfaces, and changing conditions

Purpose-Built Carbon Profile

SHIMANO refined the balance of rim weight, strength, and shape to create a carbon wheel tuned specifically for gravel. The result is a responsive, efficient ride that stays composed over long distances and mixed terrain.

Stability At Lower Pressures

GRX wheels are designed around the realities of gravel riding, where wider tires and lower pressures improve traction and comfort. The optimized rim width helps maintain lateral tire stability on loose, rough, and changing surfaces.