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Rotor's UBB (Universal Bottom Bracket) system allows Rotor 24mm and 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.
ROTOR believes that functionality and reliability — not fashion — best define material selection when it comes to crafting its cranks. Crankarms CNC-machined from aeronautic-grade 7055 aluminium or cold forged from 7075-T6 aluminium and combined with proprietary technologies yield cranks with an exceptional stiffness-to-weight ratio that can handle some serious pedal stomping and anything else you can throw at them. Together with ROTOR’s Universal Bottom Bracket (UBB) system, Rotor cranks offer a performance upgrade opportunity for almost all bikes on the market.
We will happily refund any item purchased on Wiggle if returned to us within 365 days; excluding Wiggle gift vouchers, nutrition and customised products, except when faulty.
Please note: Bikes and other bulky items cannot be returned using our local returns service (where applicable). Please contact us and we can arrange to collect these from you using our discounted courier rates. There is a fee for all collections, except for faulty products.Returned goods must be unused and supplied with their original packaging, unless the goods are faulty. Wiggle will pay the return postage costs for any faulty items.