Muc-Off Crank Preload Ring - Gold Donnelly Sports S Lower IS41

S Lower IS41

Spring rates are also highly adjustable for all weights

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Muc-Off Crank Preload Ring - Gold Donnelly Sports S Lower IS41The 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