Muc-Off Crank Preload Ring - Red CheckoutTitle=Easton EC90 SLX Drop Handlebar - Carbon The Shimano GRX ST-RX610 left

The Shimano GRX ST-RX610 left dual control lever delivers light and responsive shifting for mixed-terrain riding

This latest generation TR285 rim is ready to climb for hours to rip some burly backcountry laps before climbing out before dark

while improving power by 7 watts - validated by science

Reflective decals for increased visibility to motorists in low-light conditions

Rear-optimized rim drilling for better spoke bracing angles

Muc-Off Crank Preload Ring - Red CheckoutTitle=Easton EC90 SLX Drop Handlebar - Carbon The Shimano GRX ST-RX610 leftThe Muc Off Crank Preload Ring is a super durable precision CNC machined 7075 piece of hardware. It allows you to precisely adjust the preload tension on the bottom bracket bearings. What does this do? It helps to remove the side to side play and slack in thru spindle bottom brackets to help maximize the life of your bottom bracket bearing as well as giving you a creak free ride. It fits onto the left crank arm of any mountain gravel or road bikes