Muc-Off L.O.P.S. 2.0 oversized derailleur pulleys debut, Shimano 11-speed only
If you’re still rockin’ a Shimano Dura-Ace 11-speed group, you’re in luck. Not only does Muc-Off say those 11-speed chains are 36.6% faster than the new 12-speed chains, but their new oversized derailleur pulleys make them even faster. Formerly available only for their pro teams (EF Education Easypost, INEOS Grenadiers, and Elite IRONMAN triathletes Laura
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