Namura Standard Bore Top End Repair Kit Size B for Yamaha YZ250FX 2015-2019 77mm

Namura Standard Bore Top End Repair Kit Size B for Yamaha YZ250FX (2015-2019)

This Namura standard bore top end repair kit Size B (77mm) provides all necessary components to restore compression and performance in Yamaha YZ250FX engines for 2015-2019 models.

Overview

This top end repair kit is specifically designed for the Yamaha YZ250FX, offering a complete solution for engine refresh. It includes a high-quality piston, rings, gaskets, and wrist pin to ensure reliable operation. Whether rebuilding after wear or upgrading, this top end repair kit delivers factory-style fit and durability.

Built For Performance

• Precision-machined piston for accurate fit within the 77mm bore
• High-strength rings reduce blow-by and improve compression
• Complete gasket set included for a secure seal
• Size B specification ensures correct tolerance for standard bore
• Designed to meet OEM performance standards for Yamaha YZ250FX

Fits These Machines

• for Yamaha YZ250FX (2015-2019)

On-The-Job Use

• Restoring top end power for cross-country racing
• Replacing worn components during trail riding maintenance
• Overhauling engines for enduro competitions
• Rebuilding after piston seizure or ring failure

Specs At A Glance

Good To Know

Q: Does this kit include a cylinder gasket? A: Yes, the top end repair kit includes all necessary gaskets for a complete rebuild.

Q: Is this kit compatible with Yamaha WR250F? A: This kit is designed specifically for the YZ250FX; confirm compatibility with other models before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.