Shimano GRX WH-RX870 Carbon Disc Wheel

• 32 mm high profile full carbon rim for improved aero dynamics and durability
• 25 mm internal rim width to accommodate a wider section tyre from 32-50mm
• Easy to use Center Lock rotor mount for use with disc brakes
• 24 stainless steel butted and bladed straight pull spokes with a 2-cross lacing pattern improve lateral and torsional (power transmission) rigidity
• Elbow-less spokes with alloy nipples make for a strong yet compliant wheel
• The hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions. They also offer precision bearing adjustment and easy maintenance
• Free hub utilising a pawl ratchet engagement for precise pick up
• Labyrinth and contact sealing - low-friction seals effectively shut out water, mud and dirt without affecting rotational smoothness
• Axle size: Front - 12x100mm; Rear  - 12x142mm
• Average weight: Front 639g/ Rear 822g                                                   
• Rear wheel is Shimano 11/12 Speed compatible

The Shimano GRX WH-RX870 Carbon Disc Wheel is a gravel tuned 700c tubeless wheelset offering all the technology of Shimano wheels balancing the best combination of rim weight and strength to deliver an exceptional gravel wheelset.

The new GRX wheel supports gravel rides that are faster, further, and more fun. Wider tires need wider rims to maintain lateral tire stability at low air pressures. Shimano studied the complicated relationship between tire size, rim width, air pressure, and tire lateral rigidity to optimize the GRX rim width for 32-50c tires. In addition, we pursued the best balance of rim weight, strength, and profile in order to deliver an exceptional gravel wheel.