70cc Puch Kit, make your bike fast for cheap.
*Piston Pin and clips
*Mounting studs and bolts
Like any performace upgrade, this kit will work better with its paired performance upgrades, like a matching carburetor and expansion chamber pipe. You will also want to modify the transfer ports in the engine cases in order to extract full performance from this item, but it will work at a reduced output as a bolt on addition.
Also works on Tomos mopeds with the right parts, ask us how.