See: MIP

Following the release of the Bypass1 pistons for Mugen, MIP have a announced that they are now available for Team Associated and TLR 1/8 rides. The MIP Bypass1 pistons are fully customizable and allow you to truly control your cars rebound speed and performance. The Bypass1 pistons are also Dyno-Tuned to ensure they match the compression characteristics of the stock pistons! Featuring MIP Color Coded Valves, the Bypass1 pistons combined together with these valves allow you to control and maximize your cars performance based on which valves you use. Thicker valves generate a slower rebound and thinner valves get you quicker rebounds.