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Length available: 167.5mm/170mm/172.5mm/175mm
All comes with 52/36 noQ chainring
– Spider: 110 BCD
– Spindle: 30mm aluminum alloy
– Q-Factor: 148 mm
– Chainline: 43.5mm
– Material: 100% CNC-machined in Spain from aeronautic-grade 7055 aluminum
– Compatibility: Bottom bracket BSA, ITA, BB86, BB30, BB30A, PF30, BBRight, BB386 Evo, Oval and round chainrings, 110 BCD, 9,10 and 11 Speed
Rotor’s UBB (Universal Bottom Bracket) system allows Rotor 30mm axle cranks to be installed in almost any frame in the market today. Also, Rotor’s CNC-machined crankarms are stiffer than the competitors forged products due to their Trinity Drilling System.
This process drills three full-depth holes from the axle to pedal, leaving behind a box-trellised structure (similar to bridges). This gives their crankarms superior rigidity and an excellent stiffness-to-weight ratio.