SX250 Carbon Fiber / Cro-Mo (1994) — Supercross BMX Heritage

Supercross BMX Heritage Collection · The Cro-Mo Years

SX250 Carbon Fiber / Cro-Mo

1994

Our first carbon frame — 23 years before the Envy BLK, and decades ahead of the sport.

In 1994 Supercross built its first carbon fiber frames: a carbon top tube and down tube mated to a cro-mo rear end and cro-mo head tube. It worked great for racing. The sport wasn't ready — and neither was the material.

The Story

Supercross had been experimenting with carbon since the sport's early days, and in 1994 it reached the frame line: a hybrid SX250 with carbon main tubes and chromoly everywhere the loads concentrated — head tube and rear triangle.

For racing, it delivered. For the way riders actually used their bikes — trails, dirt jumps, endless stress cycles — mid-90s carbon couldn't take the abuse, and Supercross shelved the material rather than sell a frame that couldn't live the whole life of a BMX bike. Fewer than 25 were built, and only two known survivors exist today. The lesson waited more than twenty years, until Toray's Nano Alloy resins and new construction methods made the 2017 Envy BLK possible.

“When we first built our first carbon frame in ’94 it worked great for racing purposes, but not for dirt jumping.”Bill Ryan, founder

Specifications

Spec Detail
Production year 1994
Main tubes Carbon fiber top tube and down tube
Rear end / head tube Chromoly
Production Fewer than 25 built; only 2 known survivors
Legacy First Supercross carbon frame; direct ancestor of the 2017 Envy BLK