L-TWOO eRX eR9 eR7 Ceramic Bearing Jockey Pulley Wheel Set — Features and Specifications
These jockey pulley wheels are engineered specifically for L-TWOO eRX, eR9, and eR7 rear derailleurs, ensuring a perfect mechanical fit and zero compatibility guesswork. The carbon fiber pulley construction cuts rotating weight without compromising structural rigidity, a measurable advantage on long climbs and sprint efforts. Precision ceramic bearing technology inside each pulley delivers ultra-low rolling resistance rated significantly below standard steel-bushed wheels, translating directly into watts saved per hour. The guide wheel maintains precise chain alignment across all 11 and 12-speed cassette positions, reducing chain wear and noise. Order from the official store today for guaranteed authenticity, the best available price, and fast worldwide shipping.
















H***i –
Looks good
AliExpress Shopper –
Excellent
p***a –
Fits pretty well and looks good. There could be only a bit less play in pulleys bearing.
Z***A –
Great, thank you very much 😘