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 which require pedal washers and external sealed bearing BSA bottom brackets, both provided in the box.
Box Four Cranks feature steel pedal inserts which require pedal washers and external sealed bearing BSA bottom brackets, both provided in the box.
Yes. Not installing the pedal washers will damage the crank pedal insert and void any warranty.
The cranks are designed to specifically for 68mm wide BMX bottom bracket shells and require no spacers. Spacers may be required if your frame has a bottom bracket shell that is less than 68mm wide.
No. A chainring can only be installed on the inside of the spider.
No. A loose pedal will damage the crank and can cause injury. Always ensure that your pedals are tightened correctly.
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