Details The Box Four Crankset features a 2-piece design with an oversized bottom bracket interface. The 24mm spindle is pressed into the drive-side crank arm for durability and easy installation. The non-drive side crank arm features a 2-bolt pinch system for added strength. Our unique 4-bolt 104 BCD spider features a flex-resistant ring for optimum performance.Box Four Cranks feature steel pedal inserts that require pedal washers and external sealed bearing BSA bottom brackets, and both are provided in the box.Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 StandardFEATURES- Oversized Bottom Bracket Interface- Dual Pinch Bolts for Even Clamping Force- Spider with Flex-Resistant RingCOMPATIBILITY- Box Two Chainring- Box One Chromoly Chainring Bolts- Box One 7075 Alloy Chainring Bolts- Box Two 24mm bottom bracket- Box Extremum RacePrep bottom bracket
