Orders placed before 12pm PST M-F ship SAME-DAY!
A chain tensioner holds your rear wheel in place so it can't get pulled forward in the dropouts when you hammer out of the gate. That keeps your chain tight and your wheel straight, lap after lap.
The Speedline tensioner is CNC'd alloy with a single-bolt design. One bolt makes adjusting simple and saves a few grams. You get two per pack, one for each side, in several anodized colors.
This one fits 15mm rear axles. Check your hub before you order:
How to set it: Slide a tensioner onto the axle on each side, set your chain tension, then turn each bolt evenly until the wheel sits straight and the chain has a little play. Tighten the axle nuts and spin the wheel to check.
Race calendar
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.