Kolv top 80 (M13/2) A

Includes :

piston, piston rod, springs, segment

please select the Size: A,B,C,D,

after MEASURING the cylinder bore,

Sizing and compression, are some of the measures essential to a good setting of the engine.
if you do not understand the meaning or you are not able to measure them, you probably need help from your local dealer.
Neglect these measures can lead to poor performance and permanent damage to the engine.