Piston Kit 1st Oversize- OEM 3L5-11630-10 - for QT50/PW50 (1981-2025)

for QT50/PW50 (1981-2025)

• Cylinder Bore Diameter: 40.25 mm
• Material: High-Quality Forged Aluminum
• OE/OEM Part Number: 3L5-11630-10
• Pin Diameter: 12 mm

Upgrade your Yamaha QT50 or PW50 engine with this OEM Yamaha Piston Kit (1st Oversize), part number 3L5-11630-10. This high-quality forged aluminum piston is designed for durability and reliability, restoring lost power and compression in worn-out engines.


✔️ Genuine Yamaha OEM Part - ensures factory fitment and performance
✔️ 1st Oversize Piston (40.25mm bore) - ideal for cylinder honing and rebuilds
✔️ High-strength forged aluminum for durability and heat resistance
✔️ Restores power and efficiency to your engine

What's Included?

1x Yamaha 1st Oversize Piston - Part No: 3L5-11630-10
Fitment:
Confirm compatibility with your QT50 or PW50 before purchasing. Message us for fitment assistance!