Namura Performance Complete Top End Piston Kit - 1981-2025 Yamaha PW50

Top End Piston Kit – Yamaha PW50 1981–2025. This kit is packed with everything you need to freshen up your top end and get back to the track or trails.

Namura isn’t just another piston brand—they’re all about performance and durability. Every piston is built using the Hypereutectic Casting Process, which increases silicon content for reduced expansion, less wear, and higher heat resistance. That means your PW50’s engine can handle more abuse and keep pulling strong.

The MOS2 (Teflon/Molybdenum) coated skirts reduce friction, resist carbon buildup, and improve overall efficiency. Add in the anodized dome construction, and you’ve got a piston that’s 75% stronger than standard cast pistons. Translation: more durability, more throttle time, and less worrying about rebuilds.

This complete top end kit includes:

• Performance piston
• Ring set
• Wrist pin & clips
• Top end bearing
• Complete gasket kit

⚡ Why Riders Choose Namura PW50 Piston Kits:

• Proven durability & power gains up to 6% from smooth-top piston design

• Withstands high cylinder temps thanks to anodized dome & hypereutectic casting

• All-in-one box—no hunting for extra parts

If your PW50 is running tired, this Namura Top End Piston Kit Yamaha PW50 1981–2023 will restore power, extend life, and give young riders confidence to push harder.

---

❓ FAQ

Q: Does this kit require cylinder boring?
A: Yes—all Namura piston kits are oversized and require your cylinder to be bored to match.

Q: What’s included in the kit?
A: Piston, rings, wrist pin, circlips, top end bearing, and complete gasket kit—everything you need for a full rebuild.

Q: How does it compare to stock pistons?
A: Namura pistons are stronger, more heat-resistant, and deliver better performance than stock replacements.

---

See more piston kits form Namura 

Click to see all the other performance parts for your Yamaha PW50 

Moto-House MX - Choice of Champions - Best Local Motocross Shop in Central Florida