If you are looking to replace your crank or make your 180cc a 188cc this is the ticket. This has 3mm more stroke then the stock crankshaft.
Engine fitment for GY6 QMJ157.
100 piece all in one solder joint kit
120CC MONSTER BIG BORE CYLINDER KIT
150cc Scooter Variator Tuning Kit
16mm wire it your self button