To meet the growing demand for separate MTB cranks , Rotor decided to develop its own MTB product line. The successors of the successful 3D cranks are now called REX. The new REX cranks convincing not only visually, but also by technical values. With the help of the "Trinity Drilling System", REX cranks remove material from the center, "neutral" fiber of the crank arm. This material contributes only to a minimum extent to the carrying capacity of a component and can be omitted without negative consequences. The necessary rigidity and stability is achieved with a lightweight construction over large outside diameters! The crank is designed with a shaft of 30 mm outside diameter (UBB30) and thus guarantees the greatest possible compatibility with many frames. The crank arms are available in different lengths, 170, 172.5 and 175 mm. The material is now made of extra lightweight and durable 7055 aluminum used.
Light, stiff and extremely chic.
Application: MTB Spider: 1-fold, 76 mm, 4-hole Material crank arms: T6 7055 aluminum Material Spider: aluminum Material shaft: aluminum Crank arm length: 170, 172.5 or 175 mm Q-factor: 163 mm chain line : 50.6 mm Compatibility drive: 9 and 10 times Compatibility Bottom Bracket: BBright, BB30, PressFit30, BB92, BB89, BSA Color: black, red anodized crank screw
Weight: 498g (175mm, without bottom bracket chainrings and chainring bolts)
Scope of delivery: Crank arms (left, right), shaft, spacer, chainring bolts and operating instructions