SHIMANO GRX RX870 TUBELESS CARBON REAR WHEEL 2026-MTB-999to2999 Electrobeam Irradiation Technology

Electrobeam Irradiation Technology

Prompt - Who is this for / what is it for

cosy touch bib upper with high stretch y-form binding

the ones who don't just take the trail less travelled – they create it

SHIMANO GRX RX870 TUBELESS CARBON REAR WHEEL 2026-MTB-999to2999 Electrobeam Irradiation TechnologyThe Shimano WH RX870 GRX wheel transforms gravel riding with speed, distance, and pure enjoyment. Wider rims are essential for maintaining lateral tire stability when running wider tyres at lower air pressures. Shimano's engineering team meticulously analysed the interplay between tyre size, rim width, air pressure, and tyre lateral rigidity to perfect the GRX rim width for 3250c tyres. The result balances rim weight, strength, and aerodynamic profile