thrust spring TNT Racing Ø4mm red + 22% Mbk booster rocket, nitro ...

We present here a red push spring of TNT Racing. It has a strength of 22% (Ø4mm) harder than the original, with him no risks it is too hard, is perfect for a scooter with 50cc kit like + exhaust + carburetor settings and drive. For all scooters with horizontal and vertical minarelli.