BETA stock 40.4mm asso werke piston

stock piston assembly for beta mopeds! 12mm wrist pin, top dykes ring and bottom 1.5mm ring.

morini uses this size piston for stock too.. so check your measurements! and compare! you know how to do that now right? yes you do. good work.

comes with piston, rings, wrist pin and clips!

not sure which beta motor this is for so be sure to check the measurements below and measure your own piston before purchasing!

30mm from center of wrist pin to top of dome
26mm from top of dome to closest part of wrist pin hole
54mm overall length

treatland