Requires a CR2032 Lithium-Ion battery which is pre-installed

it mounts in an easy to reach location for quick access

they feature D3O foam padding to keep you protected against light to moderate impacts and abrasions

dirt roads

Glass Fibre/Nylon composite

Shimano GRX FC-RX820 2x12 Speed Crankset - 68-70mm Shell - 24mm - Four Bolt - 110-80 BCD Asymmetric Shimano - 170mm - Black - 48-31T - 47mm Chainline Ignore Wholesale Tier 2 Brand Rule Requires a CR2032 Lithium-Ion batteryThe 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.