Turbosmart Yellow BOV Spring For Dual Port/Super Sonic - TS-0205-3101 M1 FM5-HDR6 kit features ACT's most

FM5-HDR6 kit features ACT's most popular Heavy Duty pressure plate

similar to our very popular 1924 shift boot collars

allowing for large amounts of wastegated exhaust flow and better traction

Sold separately

Spring Rates (Front / Rear): 8 kg/mm / 8 kg/mm

Turbosmart Yellow BOV Spring For Dual Port/Super Sonic - TS-0205-3101 M1 FM5-HDR6 kit features ACT's mostTurbosmarts springs are designed to work with our Plumb Back, Dual Port and Supersonic blow off valves. They offer a wide range of spring rates to suit your driving style and application. Turbosmarts springs are made from high quality materials and are designed to maintain the peak performance of your blow off valve under the most extreme conditions. Choose from our selection of Turbosmart springs to get the perfect fit for your car and the best