ACS stands for American Cycle System

ACS Crossfire components are the parts you need to pull ahead of the pack - precision made from the best materials. Crossfire components are meant for BMX racers and all types of demanding riders.

Before there was "dirt", "flatland", "vert, "street" there was ACS. Over 30 years ago aerospace engineers Charles Stephens and Robert Hanson founded ACS and developed, designed, and manufactured some of the first high-end BMX components. ACS alloy hubs ruled BMX in the 70's, and ACS mags were featured on popular selling bikes.

Crossfire Freewheel

Stronger, less expensive, and easier to replace than cassette hubs. ACS has set the standard for freewheels for almost 2 decades! Crossfire freewheels are removable with our unique 6-spline tool that fits all sizes. 3 pawls engage 30 steps (every 12 degrees). Fits 3/32" or 1/8" chains.

• Durable cold forged CNC machined freewheel 3 pawl engagement for stronger hold with engagement every 12 degrees New removal notch pattern allows for better frame clearance
• Available sizes:
• Smaller M30 Threads: 13T, 14T, 15T
• Standard Threads: 16T, 17T, 18T, 19T, 20T, 22T