PROX 01.2005.000 Piston Kit Yamaha PW50 MJ50 1981-2025 40.00mm

Time to give your little ripper’s engine some serious love? The PROX 01.2005.000 Piston Kit Yamaha PW50 MJ50 40.00 mm has everything you need to keep the legendary PW50 and MJ50 running like a champ. Whether you’re rebuilding after hard miles or just upgrading for better performance, this kit delivers factory-level precision with race-ready durability.

Built using state-of-the-art CNC machining, each piston is manufactured to exact tolerances and designed to meet (and often exceed) OEM specs. That means you get the same reliability Yamaha intended, but with the high-quality engineering of PROX. The 40.00 mm bore piston ensures a perfect fit for PW50 and MJ50 models from 1981 through 2025—covering decades of Yamaha’s most iconic minibikes.

The kit is stacked with everything you need: piston, ring set, wrist pin, and circlips. No hunting for extra parts, no guesswork—just a ready-to-install package. Built from high-grade materials, this piston is designed for thermal stability, wear resistance, and smooth operation, so your PW50 or MJ50 keeps pulling strong season after season.

Whether you’re a DIY dad in the garage or a seasoned mechanic, installing the PROX 01.2005.000 Piston Kit Yamaha PW50 MJ50 40.00 mm is straightforward with basic mechanical skills. Just follow proper torque specs, and you’ll have your mini moto ripping again in no time.

💥 Why Riders & Mechanics Trust PROX:

• CNC Precision: Exact piston-to-cylinder clearances for perfect fit.

• All-In-One Kit: Includes piston, rings, wrist pin, circlips.

• Durability Built In: High-grade materials withstand heat & abuse.

• PW50 + MJ50 Ready: Designed specifically for Yamaha minibikes.

🏍️ Don’t settle for cheap knockoffs—equip your bike with the PROX 01.2005.000 Piston Kit Yamaha PW50 MJ50 40.00 mm and keep your motor roaring. Order today and ride with confidence!

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❓ FAQ

Q: What years does this piston kit cover?
A: It’s designed for Yamaha PW50 (1981–2025) and Yamaha MJ50 (1982).

Q: What’s included in the kit?
A: You’ll get a piston, ring set, wrist pin, and circlips—everything needed for installation.

Q: Do I need special tools to install this piston kit?
A: Just standard hand tools and a torque wrench. Basic mechanical skills are all you need.

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