Rotor Kapic Carbon Crankset Performance without compromise Inspired by winning the ultra-challenging Cape Epic MTB race, the Rotor Kapic Carbon Crankset is fueled by podiums. This ultralight carbon crankset is the lightest MTB crankset Rotor makes, weighing only 443-449 grams depending on the configuration. This crankset's modular design means riders can select the spindle that works for their bike, while individually selecting other crank components based on rider preference. Want 175mm crank arms on a BSA bottom bracket? Sure! T47 with 165mm cranks? No problem. To further optimize performance, The Kapic Carbon is available with Rotor's Q-Rings, the legendary oval rings to smooth out the rider's pedal stroke and increase efficiency. With the Rotor Kapic Carbon Crankset, Rotor knows top-level performance means not compromising. Features Ultra-lightweight design featuring carbon crankarms and race-winning DNAModular design allows riders to change spindles, chainring spiders, or crank arms as needed to accommodate bikes Compatible with Q-Rings for smoother, more efficient pedaling SPECIFICATIONSSpeeds11 or 12-speed Crank Arm Length165, 170, or 175mm Bottom Bracket Compatibility BSA, BB30, BB89, BB92, PF30, or T47 (NOTE: compatibility depends on the use of the correct spindle type)Chainring Type Rotor Direct Mount Crank Arm Material Carbon Fiber Chainline52mm (L135 Spindle), 55mm (L141 Spindle), 56. 5mm (L144 Spindle)Bottom Bracket Included No Intended Use XC, Trail Weight443-449g | Rotor | Kapic Carbon Crankset Lightweight Xc 170Mm 34T