ScootsUSA Select – 100cc Cylinder Head 50mm for GY6-50 QMB139 Scooter Motors. Valves Installed. with Rocker Arm Assy

Compatibility / Fitment

Use the fitment details below to confirm this part matches your vehicle before ordering.

• Engine Size: 100cc, GY6, QMB139
• Fits Models / Common Applications: Scooters
• Fitment Notes: Engine, Cylinders & Big Bore Kits

Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible vehicle. If your vehicle has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.

Common Fitment Questions

Q: Will this fit my 100cc engine?

A: This part is listed for 100cc, GY6, QMB139 applications. Verify your engine code and the specifications above before ordering.

Q: How do I confirm this matches my original part?

A: Measure your original part and compare against the listed specs (Size: 50mm). Matching measurements is the most reliable way to confirm fitment.