Shimano GRX FC-RX820 2x12 Chainring - Four Bolt - 80 BCD - 51.1mm - Round - 48T - 12 Speed - Alloy Images Uploaded - Ready for Review The combination of the 60tpi

The combination of the 60tpi ProWall casing with sidewall protections and the Procompound Endurance

Recommended use: General travel

One of the most lightweight Diamond-rated bike locks and with a patented CLIP + RIDE system

Style: BSA External Threaded (English)

Shimano GRX FC-RX820 2x12 Chainring - Four Bolt - 80 BCD - 51.1mm - Round - 48T - 12 Speed - Alloy Images Uploaded - Ready for Review The combination of the 60tpiThe 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. Features Smaller gear steps for cadence control on mixed terrain riding Gravel optimized gear ratios preserve riding rhythm on rough surfaces Wider gear range Specifications Rear speeds 12