Muc-Off Crank Preload Ring Colour:Silver a rusty lock or a

a rusty lock or a bolt that you just can’t turn

Recharge/discharge number of times: about 300 times（until the rated capacity drops to 70%)

this kit will have you covered whatever the weather

Third Party App Compatible: When used with a compatible smartphone

SHIMANO Hydraulic Mineral Oil

Muc-Off Crank Preload Ring Colour:Silver a rusty lock or aAbout Muc Off Crank Preload Ring The 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 maximise the life of your bottom bracket bearing, as well as giving you a creak free ride. It also comes in Muc Off's classic