Rotor Kapic Crank Arms The new ROTOR Kapic is named in honor of the CAPe e PIC, the world's most prestigious marathon stage race where elite riders undertake a combination of gruelling rocky climbs, fast flowy singletracks and thrilling technical downhills. Constructed using an expert CNC process, KAPIC crank arms use ROTOR's Trinity Drilling System which features three internal holes from axle to pedal creating an exceptionally light crank with superior stiffness. Features KAPIC's innovative modular system allows you to select each crank component based on your unique bike setup and physical characteristics Direct Mount technology features a proprietary spline interface connecting crank arm, axle and chainring allowing simple assembly and disassembly of your crankset When combined with Q RINGS, OCP mount technology allows you to adjust your Optimal Chainring Position (OCP) to within one degree increments to precisely configure your unique OCP to maximize power output to your distinct pedaling style Three crank arm lengths to choose from: 165mm, 170mm or 175mm Weight: 355g (170 mm)SPECIFICATIONSCOLORBlack CRANK AXLE COMPABILITYL135 Standard, L141 Super Boost UBB COMPABILITYBSA, PRESS FIT 30, PRESS FIT 4130, PRESS FIT 4630, UBB30CHAINLINE52. 5mm CRANK LENGTH165mm, 170mm, 175mm AXLE WIDTH30 mm AXLE MATERIALAluminum MATERIAL6082 Aluminum Alloy TECHNOLOGIESCNC, Direct Mount, OCP Mount, Trinity, Twin Leg COMPATIBILITYBB30, BSA, PF30, BB89, BB92, PF4130, PF4630, UBB4630DISCIPLINEMTB | Rotor | Kapic Crank Arms 170Mm | Aluminum