About Muc-Off Crank Preload RingThe 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 anodised colours for added bling! It fits onto the left crank arm of any mountain, gravel or road bikes that have SRAM, RaceFace or Easton 30mm spindle cranks, or SRAM DUB 28.99mm spindles installed. FeaturesPrecision CNC machined, 7075 aluminium body and threaded adapter ring for a perfect fit Stainless steel hardware Allows you to precisely adjust the preload tension on the bottom bracket to help extend the life of your bb bearing! About Muc-OffBack in 1991 Rex and Marilyn Trimnell got things started with X-Lite UK. After designing and manufacturing the world’s first twin crown bicycle fork, Rex created a perfectly pink spray to clean his kit. To make a long story short, Rex’s cleaner was the best thing since sliced bread, and it wasn’t long before word got out and Muc-Off was born. Fast-forward and Muc-Off is now the go-to brand for top riders and racers from the likes of Team Sky to Atherton Racing creating cleaners, lubes, athlete performance products and more.
