Your stem is the critical link between your fork and handlebars — it determines your reach, your weight distribution over the front wheel, and your confidence on the gate. Supercross BMX and Speedline Parts produce a complete range of BMX racing stems machined from solid billet 6061-T6 aluminum and engineered for maximum clamp strength with minimum weight. Every stem in our lineup is designed and tested at the race track — not in a marketing lab.
Carbon Matrix BMX Pro Racing Stem
The Speedline Carbon MATRIX BMX Pro Racing Stem is our flagship — a full carbon fiber stem body with CNC-machined alloy clamp hardware. The ultimate in weight savings for riders who want every gram off the front end of their race bike. Contact us for availability.
Billet Aluminum BMX Race Stems — Pro Sizes
- Speedline 31.8 Elite BMX Pro Racing Stem — Our most popular pro stem. 31.8mm bar clamp for oversized bars. Machined from solid billet aluminum, anodized finish. Available in multiple reach lengths. $89.95
- Speedline Elite BMX Pro Sized Racing Stem — Standard 22.2mm bar clamp version for riders on standard-diameter handlebars. $69.95
- Supercross Racerhead FL — Front Load Stem — Front load configuration for riders who prefer the bar-forward feel of a front load setup. CNC billet. $79.95
- Supercross Racerhead TL — Top Load Stem — Top load version of the Racerhead. Raises bar height by approximately 20mm vs front load. Popular with taller Pro and Expert XL riders. $79.95
Mini Class BMX Racing Stems
- Speedline Mini Elite BMX Racing Stem — Sized for Mini class riders. Same billet construction as our pro stems, scaled for smaller bikes and riders. $69.95
Front Load vs Top Load — which is right for you?
- Front Load: Lower bar position, more aggressive attack angle. Preferred by most pro and expert racers for its direct, connected feel.
- Top Load: Raises bar height ~20mm. Good for taller riders, riders transitioning up a frame size, or those who want less reach to the bars.
Questions on reach, height, or compatibility with your bars and fork? Call our team at 760-240-5266 — we'll dial it in for you.