Box Three Hollow-Forged Crankset - Box®

Box Three Hollow-Forged Crankset

$391.00 Sale Save
Size 170mm
Color Black

Only 0 left in stock

SKUBX-CK1732470-BK

The Box Three Crankset features a hollow-forged 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 Three Cranks feature steel pedal inserts that require pedal washers and externally sealed bearing BSA bottom brackets, both provided in the box.

    For compatibility questions, please click here

    Weight Limit: 115kg (253 lbs) with limitations as per Category 2 of EN 16054:2012 Standard


      Oversized Hollow Forged Design
      Dual pinch bolts for even clamping force
      4-bolt 104 BCD Spider with Flex-Resistant Ring
      24mm chromoly spindle
      External BSA BB Included

      Box Two Chainring
      Box One Chromoly Chainring Bolts
      Box One 7075 Alloy Chainring Bolts
      Box Two 24mm bottom bracket
      Box Extremum RacePrep bottom bracket

      170mm 175mm 177.5mm 180mm
      BB (Included): BSA 1.37
      Spindle: 24mm Chromoly
      Material: 6061-T6 Aluminum
      Process: Hollow-Forged
      Chainline: 44.5mm
      Torque specs: 12-14 nM
      Weight: 1,010g/35.6oz, 1,020g/35.9oz, 1,020g/35.9oz, 1,010g/35.6oz

      Can I use axle or bottom bracket spacers with these cranks?
      Can I use axle or bottom bracket spacers with these cranks? A. The cranks are designed 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.

      Can I install my chainring on the outside of the spider?
      No. A chainring can only be installed on the inside of the spider.

      Can I ride with a loose pedal?
      No. A loose pedal will damage the crank and can cause injury. Always ensure that your pedals are tightened correctly.