Promax | SQ-1 Cold Forged Crank Arms

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The SQ-1 cranks arms have a traditional, five-arm, 110-bolt pattern spider and come in a variety of lengths to fit most riders or riding situations, from the 5-and-under BMX racer to the 6-foot tall fixie-riding hipster.

  • 110mm BCD
  • Compatible with any JIS square-taper bottom bracket
  • Cold-forged from 6061-T6 aluminum for strength, low weight and durability and feature beautiful anodized finishes
  • Bottom bracket sold separately
  • Chainline with 113 BB: 42.3
  • Q-Factor with 113 BB: 151.1
  • Available Sizes: 140mm, 150mm, 160mm

Race calendar

Never miss a USABMX national

Add the 2026 USABMX national race schedule to your calendar with one click. Built by Supercross BMX so racers, parents, and fans can keep every national weekend in one place.

Dates are based on the official USABMX national schedule and may be updated if changes are announced. This calendar is a fan/racer convenience tool from Supercross BMX and is not an official USABMX calendar.