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improved ventilation
and it must continuously support the rider's weight
- for 3/8" & 1/2" drive
Gear: Sturmey Archer 4-speed LL
Real-time activity monitoring features:
movimento centrale cyclingceramic in cup pf30 t47 30mm 86 5mm Attrezzi Pulizia improved ventilationThe CyclingCeramic bottom brackets are paired with low friction ceramic bearings that are more durable than standard bearings. The high quality finish of the bottom brackets allows them to achieve high performance. They are designed to offer a lightweight set and, thanks to the seal design, provide maximum protection. The extreme hardness of the CyclingCeramic balls results in bearing longevity 4 to 5 times greater than standard bearings, the special