Speedline Parts | CNC'd Alloy BMX Chain Tensioner Kit 3/8" (10mm)
$ 24.95 - $ 29.95
The Speedline Alloy Chain Tensioners have a 3/8" axle hole and will work with most 3/8" (10mm) hub axles.
Its single-bolt design keeps chain tension uniform and straightforward.
We also moved to a single-bolt design to cut down on weight. It's only a few grams, but those saving add up!
Our chain tensioners come in a pack of two, available in various colors!
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.
J
Great Quality Would Recommend
S
The best in the BMX market and their shipping was amazing
M
Works great
B
I'm building a supercross AMX 250, they've been very helpful with every part I've needed
D
Great fit and finish
Highly recommend anything speed line