Wiseco PK1161 Top End Kit 41.00mm Forged Piston Yamaha PW50 1985-2025

Want to keep your little ripper’s PW50 running strong? The Wiseco PK1161 Forged Series Top End Kit Yamaha PW50 is built for riders who need reliability, strength, and performance in one complete package.

Wiseco is the gold standard in 2-stroke piston technology, and this PK1161 Top End Kit delivers everything you need to bring your Yamaha PW50 back to life. Forged from premium aluminum alloy and precision-machined in the USA, this piston kit offers unmatched durability and the perfect strength-to-weight ratio.

With a 41.00mm forged piston, this kit is engineered specifically for Yamaha PW50 engines (1985–2025), making it the ideal choice for both rebuilds and performance refreshes. Wiseco didn’t stop at the piston—the kit includes piston rings, wrist pin, circlips, bearing, and gaskets for a full top-end solution

➡️Why choose the Wiseco PK1161 Top End Kit Yamaha PW50?

• Designed for Yamaha PW50 models 1985–2025
• Forged piston with lightening operations = optimized strength & reliability
• Complete kit: piston, ring set, wrist pin, circlips, bearing & gaskets
• Built in the USA with championship-winning engineering
• Increases durability, longevity, and consistent performance

Parents love it for peace of mind. Riders love it for the throttle response. Mechanics love it for the easy install and Wiseco’s reliability.

➡️ So if your PW50 is ready for a rebuild, don’t gamble with knockoffs—go with the Wiseco PK1161 Forged Top End Kit Yamaha PW50 and ride with confidence.

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❓ FAQ

Q: What size piston is included in this kit?
A: The Wiseco PK1161 kit comes with a 41.00mm forged piston.

Q: Does this include everything for a top end rebuild?
A: Yes! The kit includes the piston, rings, wrist pin, circlips, bearing, and gaskets.

Q: What years of PW50 does this fit?
A: It’s designed for all Yamaha PW50 models from 1985 through 2025.

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Yamaha PW50 Performance Parts and Accessories

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