The new rotor 3Dcrank features UBB24 technology, creating a rigid crank compatible with almost every bike. The unique Rotor UBB (universal bottom bracket) system ensures it is 100% compatible with BSA (68 and 73), ITA, BB86, BBB89, BB92, BB30, BB386 Evo and BBright bicycles. This Rotor crank is an indestructible upgrade! Thanks to cold forged and hollow drilled aluminum arms it's both rigid and light, offering great performance.
• Chain ring bolts