You became a mountain biker the second you swung your leg over a bike. Your mtb is more than just a means to be fit; it's an accessory to your lifestyle. The REX 3.3 gives frames with 24mm axles a triple chainring option. Crank arms 100% CNC-machined from 7075 aluminum are combined with proprietary technologies to yield cranks with an exceptional stiffness-to-weight ratio that can handle any off-road thrashing you can give it. Together with ROTOR's Universal Bottom Bracket (UBB) system, the REX 3.3 offers a performance upgrade opportunity for all triple chainring mountain bikes with 24mm frame axles.
172.5mm length 555g
- - Spider: 104/64 BCD
- - Spindle: 24mm steel
- - Q-Factor: 169mmm
- - Chainline: 49.5mm
- - 100% CNC-machined, 7075 aluminum alloy
- - Compatibility: Bottom bracket BSA, BB89, BB92, BB95, BB30, PF30, BBRight Oval and round chainrings, 9, 10 and 11 speed