Speedline Parts | Speedline Carbon MATRIX BMX Pro Racing Stem
$ 219.95
The Speedline Carbon Matrix Pro Stem is the first of it's kind.
A complete carbon fiber pro size BMX Race stem sporting a 31.8mm Clamping area
It’s designed to pair seamlessly with your Pro Carbon Handlebars & Pro BLK Carbon Race Forks
The carbon-on-carbon clamping area creates a more efficient bond leading to less slippage of your carbon bars while simultaneously protecting your carbon components.
Available in 48mm / 54mm / 60mm
Still can’t decide on the right stem? Click here to read our blog about choosing the right stem!
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.