10% polyurethane spandex

Easily adjusted and completely rebuildable

and basic riding essentials

Who's this item for: Designed for all riders using Shimano 12 speed direct mount cranks

The Culvert Mid also features an adjustable power strap that snugs the heel down while providing extra support

Shimano GRX FC-RX820 2x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110-80 BCD Asymmetric Shimano - 172.5mm - Black - 48-31T - 47mm Chainline Dropship 10% polyurethane spandexThe SHIMANO FC RX820 2 balances weight savings and optimal efficiency for mixed terrain riding and racing. Double chainring gearing caters to the segmented demands of gravel cycling, maintaining the tighter gear steps needed to maintain your position in the bunch. The 2x12 speed crank utilizes a 48 31T chainring and comes in 170, 172. 5, and 175 mm crank arm lengths.