Muc-Off's updated L.O.P.S. 2.0 oversized pulley cage is angle optimized and ultralight, and formerly only available to the pros.
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Replacing Simplex Derailleur Pulleys
Enduro Bearings announces XD15 Directline Derailleur Pulleys
Pulley Wheels - Shimano
BBinfinite Ceramitech composite derailleur pulleys get oversized, no mech mod needed
Would you spend £1,000 on this specialist part from Muc-Off? Plus all of the week's top tech from Colnago, Wahoo, Rapha, Jack Wolfskin, MAAP & more
L.O.P.S 2.0 - Lightweight Oversized Precision Shifting
Gadgets & Hacks - Page 5 of 60 - Bikerumor