Wiseco Forged Series Piston Kit with Gaskets PK1157 — Yamaha PW50 1985-2026

Product Description

The Wiseco Forged Series Piston Kit is designed to bring legendary performance and reliability to your Yamaha PW50. Built for the unique demands of this 49cc 2-stroke powerhouse, each piston is forged from high-quality 4032 aluminum alloy. These pistons utilize dedicated forgings and advanced lightening operations to provide an optimized strength-to-weight ratio, ensuring your bike runs smoother and lasts longer.

This comprehensive kit simplifies your top-end rebuild by including everything you need: the piston, ring set, wrist pin, circlips, top-end bearings, and a complete gasket set. Engineered, forged, and machined in the USA, Wiseco components are the gold standard for riders who demand premium performance and maximum durability on every ride.

Top Features: Wiseco Forged Series Piston Kit

• Dedicated forgings with optimized strength-to-weight ratio for improved responsiveness
• Complete rebuild kit includes piston, rings, wrist pin, circlips, bearing, and gaskets
• Engineered and manufactured specifically for the Yamaha PW50 2-stroke engine
• Crafted in the USA from premium 4032 aluminum alloy for superior durability
• Designed to exceed OEM standards for longevity and performance

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Does this kit include the top-end needle bearing?
A: Yes, this Wiseco kit is truly comprehensive and includes the necessary bearings along with the piston, rings, and gasket set for your PW50.

Q: Why choose a forged piston over cast?
A: Forged pistons like these from Wiseco are significantly stronger and more resistant to fatigue, which helps prevent failure during the high-stress conditions of off-road riding.

Expert Pro-Tip: When working on the PW50, take the time to clean the carbon buildup out of the exhaust port while the cylinder is off. A restricted exhaust port kills performance more than almost anything else on these small 2-strokes. Also, make sure to coat the cylinder walls and piston rings with fresh 2-stroke oil during assembly to prevent scoring on the initial startup.

Recommended Pairings:
o Yamaha PW50 Performance Parts & Upgrades
o MX Chains & Drivetrain Components
o Premium Motorcycle Chemicals & Assembly Lubes

At Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.

Moto-House MX – Choice of Champions – Clermont / Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.