Namura Standard Bore Size C Top End Kit for Kawasaki KX250F 2017-2019 77mm

Namura Standard Bore Size C Top End Kit for Kawasaki

This Namura Standard Bore Size C Top End Kit is a replacement piston and cylinder assembly for Kawasaki KX250F models from 2017 to 2019, featuring a 77mm bore size.

Overview

The Namura Standard Bore Size C Top End Kit provides a direct-fit replacement for the 77mm bore top end on Kawasaki KX250F dirt bikes from 2017-2019, restoring compression and performance. It is designed for riders and mechanics rebuilding the cylinder head and piston assembly.

Built For Performance

• Standard bore size 77mm matches OEM specifications for 2017-2019 KX250F
• Includes piston, rings, wrist pin, and circlips for a complete top end rebuild
• Namura engineered castings offer consistent quality and reliable fit
• Designed to work with stock cylinder and head without modification
• Precision-machined surfaces ensure proper ring seal and power output

Fits These Machines

• for Kawasaki KX250F 2017
• for Kawasaki KX250F 2018
• for Kawasaki KX250F 2019

On-The-Job Use

• Motocross racing requiring frequent top end refresh
• Trail riding and enduro applications needing reliable performance
• Off-season rebuilds to maintain peak engine condition

Specs At A Glance

Good To Know

Q: Does this kit include all necessary gaskets?A: This top end kit typically includes the piston, rings, pin, and circlips; additional gaskets may be required and sold separately.

Q: Can I use this with a worn cylinder?A: It is intended for a cylinder that is within standard bore limits, so inspect and measure before installation.

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