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

Namura Standard Bore Top End Repair Kit Size A for Yamaha YZ250FX

This Namura Standard Bore Top End Repair Kit Size A is a direct replacement for the Yamaha YZ250FX 2015-2019, featuring a 77mm bore size and engineered to restore compression and power.

Overview

The Namura Standard Bore Top End Repair Kit Size A provides all necessary components for a complete top-end rebuild on the Yamaha YZ250FX. This 77mm kit is designed to renew cylinder compression and extend engine life for off-road riders and racers. The Standard Bore Top End Repair Kit ensures reliable performance season after season.

Built For Performance

• 77mm bore size matches OEM specifications for precise fitment
• Size A classification ensures correct piston-to-cylinder clearance
• Premium materials resist wear and heat for extended service intervals
• Includes piston, rings, wrist pin, and circlips for a complete rebuild
• Engineered for consistent compression and horsepower restoration
• Direct replacement design simplifies installation

Fits These Machines

• for Yamaha YZ250FX 2015
• for Yamaha YZ250FX 2016
• for Yamaha YZ250FX 2017
• for Yamaha YZ250FX 2018
• for Yamaha YZ250FX 2019

On-The-Job Use

• Off-road motocross and enduro racing
• Trail riding and recreational off-road use
• Top-end engine rebuilds after high-hour usage
• Competitive racing requiring reliable engine performance
• Maintenance of Yamaha YZ250FX dirt bikes

Specs At A Glance

Good To Know

Q: What is included in this repair kit? A: The kit includes a piston, rings, wrist pin, circlips, and all necessary gaskets and seals for a complete top-end rebuild.

Q: Does this kit work with the 2019 model year? A: Yes, the Namura Standard Bore Top End Repair Kit Size A fits all Yamaha YZ250FX models from 2015 through 2019.

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