Cylinder assembly Active TMMP: a part for Active mopeds. The cylinder is the core of the cylinder-piston assembly: the piston moves in it, and its walls set the compression and carry away heat.
Replace it if there is scoring and deep scratches on the bore, it is out of round, compression has dropped, or oil consumption is high. Before installing, make sure it fits your piston and head. Manufacturer: TMMP.
