TNT Racing thrust spring Ø4mm green + 15% for Mbk booster, nitro, ...

A green push spring from TNT Racing. It has a resistance of 15% (Ø4mm) harder than the origin, with him no risk that it is too hard, will be perfect for a slightly equipped scooter type muffler + carburetor and settings variator. For all motor scooters minarelli horizontal and vertical.