Pay in 4 interest-free payments of $34.50 Learn more
Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
44mm Stroker Crankshaft Assembly for 50cc 4-stroke QMB139 engines
Instant Style Refresh: A simple
Lithium-ion battery and management system ensures stable performance and long life
Rings(1100-1234) and wrist pin parts(1100-1193
5" rim and 11" outer diameter Technical Specifications
SSP-G GY6 58.5mm Cylinder Head largeframe 44mm Stroker Crankshaft Assembly forSSP G GY6 58. 5mm Complete Cylinder Head for 150cc and 125cc GY6 4 stroke engines and engine based vehicles with 160 180cc cylinder kits. This head has a deeper chamber for more efficient combustion. Please note: The threaded exhaust flange holes are only 10mm deep on this head. You may need to trim exhaust studs or use bolts for a proper seal. Exhaust Valve Diameter: 23mm Intake Valve Diameter: 27. 75mm Exhaust Port Diameter: 26. 5mm Intake Port
