Supercross BMX | BLK Carbon Fiber BMX Race Fork

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After 4 years of production, we have redesigned the Supercross SLT Carbon Fiber Pro Race Fork. The Original one served us well and it is one of the strongest carbon fiber race forks on the market, but we knew we could do better. And we did.

Please let us introduce you to the new Supercross BLK Carbon Fiber Pro BMX race Fork. The first full monocoque carbon fiber, tapered steer tube Pro BMX Race Fork.

Our goal with the new Supercross BLK Carbon fiber fork, was not to make it lighter, but to make it stronger, stiffer and to keep pushing the envelope for BMX fork technology.

While utilizing the same Torray T700S Nano Alloy Resin Carbon Fiber as the Supercross ENVY BLK race Frame, for maximum strength and security we designed a full 1 piece Carbon fiber fork. No glue, no bonding, The entire fork is a single piece of high modulus, high-impact carbon fiber. The steertube will never slip, twist or pull. As the Steertube, the Legs, and the dropouts are of the same singular piece of hollow carbon fiber.

Supercross BMX BLK Carbon Fiber BMX Racing Fork


And by engineering the new Supercross BLK as a solid 1 pc form which is stronger than the boned and glued in steertube type of fork, it is also lighter. With the new tools and design, we were able to shave off a full 1/4 pound! and increase the strength.

The Supercross BLK Carbon fork comes stock with the Speedline 20mm - 3/8" adapters, and the 7075 Aluminum Supercross BMX Top Cap.

Available in a wide arrange of colors ( Gloss and Matte ) to match the Supercross ENVY BLK and the Supercross ENVY RS7 and RS7 Fastback Race frames, or any BMX racing Frame with a tapered 1 1/8" - 1.5" headtube.

20" , 24" and 26" wheel sizes.

20" Dimensions -
Steertube Length - 175mm
Steertube Clamp Diameter - 28.6
Internal Threads - 18x1.5mm
20" size Axle to Crown - 319mm
Rake - 28mm
Weight - 16 ounces - ( 445 grams )

Please watch the video below for the machine testing on the Supercross BLK forks. All of our Supercross and Speedline product meet AND EXCEED all EN Test standards for racing bicycles.


Tech Note: Never use a star-fangled nut with a carbon steerer tube. This is why our forks have a bonded in compression bolt.

Installing the Fork:

  • Assemble the fork, headset, spacers, top cap and top cap bolt in the head tube of the bicycle and slide on the stem.
  • Adjust headset tension using an appropriate hex wrench and according to the headset manufacturer’s instructions. If the headset manufacturer has not specified torque, tighten to 1.6 Nm (15 in-lbs).
  • Torque the stem steerer clamp bolts as specified by the stem manufacturer (do not exceed 6Nm).
  • When using a dropout clamping bicycle rack, always clamp the dropouts securely to prevent dropout and/or bike damage. If the clamp is loose, the bike may fall out of the rack. When removing the fork from the clamp, be sure to remove both dropouts evenly at the same time. Do not tilt the bike to one side, because dropout damage may result. Dropout damage can cause component failure, which can result in serious injury or death.
  • On a thru-axle fork, ensure that the axle is torqued to 8nm.