Aftermarket Performance Parts Compatible with KYMCO Applications
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- GY6 Cylinder Heads
150cc 125cc GY6 QMJ157 61mm Performance Big Valve GY6 2 Valve Cylinder Head
- Upgrade your scooter with our GY6 2 Valve Cylinder Head. Available in 58.5mm to 63mm sizes with big valve options (23/28 & 30.5/26.5). Perfect GY6 150cc racing parts for Puerto Rico riders and beyond. MOQ 100pcs.
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- GY6 Crankshaft
GY6 Custom Crankshaft | Kymco QMI152 / QMJ152 / 157QMB
- Custom Kymco GY6 crankshaft (Kruk As) for QMI152, QMJ152 and 157QMB scooter applications. Confirmed Stroker options: 3 mm, 8.2 mm, 10.20 mm and 14 mm. Kruk As Custom Stroke OEM/ODM projects are quote-only.
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- GY6 150cc & 200cc Racing Camshaft
GY6 Tank Camshaft for GY6-B / GY7 / 161QMK 200cc EFI Engines
- Performance camshaft (Noken As) for GY6-B, GY7 and 161QMK 200cc EFI engines. Available in +0.5 and +0.7 options for Tank 200 and compatible scooters.
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- GY6 Adjustable Timing Sprocket
Premium GY6 Timing Sprocket | High-Performance GY6 Racing Parts
- Buy premium GY6 timing sprocket for 150cc & 200cc big block engines. Perfect upgrade for motorcycle engine rebuild kits, camshaft setups, and GY6 racing parts. Trusted by performance shops, racing teams, and wholesale buyers.
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Ruizheng Racing manufactures aftermarket and custom motorcycle engine parts for selected KYMCO-compatible applications. The KYMCO name is used only to identify vehicle or engine compatibility. Products shown on this page are manufactured or supplied by Ruizheng Racing unless otherwise stated.