Muc-Off Crank Preload Ring - Orange Back Sweep (deg)-7 Drivetrain is silent in all

Drivetrain is silent in all gear positions with decreased rear derailleur and chain tension in low gear Rear Derailleur Mount Type 10x1 Standard Rear Der/Shifter Compatibility Shimano Mountain Color Black Cage Length Medium Drivetrain Speeds 12 Largest Cog 45 Drivetrain Compatibility 12-Speed

Left 31 Bearing Type Sealed Cartridge Weight 310 Center to Flange

Water bottle boss mounting bracket included

brings proven World Cup racing technology to junior racers

5mm steel bars with soft coating to protect bikes paint

Muc-Off Crank Preload Ring - Orange Back Sweep (deg)-7 Drivetrain is silent in allThe 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