Transform your existing Fox 36 suspension fork into the ultimate trail fork. The ACS3 coil conversion kit combines small bump sensitivity, traction, and mid stroke support of a coil with the big hit performance of an air spring. By using coil springs, you can eliminate the constant maintenance required to keep your fork running optimally!Reduced friction for smoother overall fork performanceAir Bump Stop cartridge technology to control the bigger hits towards the end of the travel PUSH Industries ACS3 Coil Component Kit Fox Coil Springs & Parts UPC: 840031605948