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 Standard 160mm 165mm 170mmBB (Included): BSA 1.37Spindle: 24mm ChromolyMaterial: 6061 T-6 AluminumProcess: Cold-ForgedChainline: 44.5mmTorque specs: 12-14 nMWeight: 900 grams / 31.7 ounces, 900 grams / 31.7 ounces, 900 grams / 31.7 ounces
