Namura 76.95mm Standard Forged Top End Kit 2019-2022 Yamaha YZ250F

Restore the explosive power and high-RPM reliability of your Yamaha with the Namura Forged Top End Rebuild Kit. If your engine is losing compression or it's simply time for scheduled maintenance, Moto-House MX provides this comprehensive OEM Replacement solution to get your 250F back to the front of the pack. Engineered specifically for the 2019-2022 Yamaha YZ250F, this kit ensures your top end is built to handle the rigors of modern motocross.

Every Namura kit is designed for Racing Performance and Heavy Duty durability. Featuring a precision-forged 76.95mm standard bore piston, this kit provides superior strength-to-weight ratios compared to traditional cast alternatives. This forged construction is essential for withstanding the high heat and extreme cylinder pressures of a high-revving 4-stroke engine, ensuring consistent performance throughout your entire moto.

Top Features: Namura Forged Top End Kit

• Forged Piston Technology: Precision-forged for maximum structural integrity and reduced reciprocating weight.
• Complete Rebuild Solution: Includes the piston, high-quality rings, wrist pin, circlips, top-end bearing, and a complete gasket set.
• Standard Bore 76.95mm: Engineered to match factory specifications for a perfect fit in standard-sized cylinders.
• Comprehensive Gasket Set: Provides a total seal for the top end, preventing pressure loss and oil weeping.
• Optimized Performance: Designed to restore factory-level snap and throttle response to your Yamaha powerplant.

Fitment List

Year Range	Vehicle Brand	Vehicle Model & Size
2022	Yamaha	YZ250F
2021	Yamaha	YZ250F
2020	Yamaha	YZ250F
2019	Yamaha	YZ250F

Frequently Asked Questions

Q: Is this kit better than the stock Yamaha piston?
A: Namura forged pistons offer increased strength over the original equipment cast pistons, making them highly resistant to shattering and wear under racing conditions.

Q: Does this include the head and base gaskets?
A: Yes, this is a complete "Top End" kit, meaning it includes all the necessary gaskets and O-rings required to reassemble your cylinder and head.

Q: Is 76.95mm the standard size for the 2019-2022 YZ250F?
A: Yes, 76.95mm is the standard bore diameter. If your cylinder has been bored over or has excessive wear, you may need an oversize kit.

Upgrade Your Ride and bring your YZ250F back to peak performance today!

Moto-House MX – Choice of Champions – is located in Clermont/Montverde, FL. The best motocross shop in Central Florida.