Namura Standard Bore Size B Top End Repair Kit for Yamaha YZ450F 2014-2017 97mm

Namura Standard Bore Size B Top End Repair Kit for Yamaha YZ450F

This aftermarket top end repair kit is engineered to restore compression and performance in Yamaha YZ450F motorcycles from 2014 to 2017, featuring a 97mm standard bore size for precise fitment.

Overview

The Namura Standard Bore Size B Top End Repair Kit provides a complete top-end rebuild package for Yamaha YZ450F models. This top end repair kit includes a forged piston, rings, wrist pin, circlips, and all necessary gaskets to refresh the upper engine. Riders and mechanics will find this top end repair kit an economical solution for restoring engine power.

Built For Performance

• Forged 2618 aluminum alloy piston for high strength and heat resistance
• Plasma-moly piston rings reduce friction and improve seal
• Complete gasket set included for a hassle-free rebuild
• Precision-machined wrist pin and circlips for secure installation
• Matched weight piston reduces vibration and stress on the crankshaft

Fits These Machines

• for Yamaha YZ450F (2014)
• for Yamaha YZ450F (2015)
• for Yamaha YZ450F (2016)
• for Yamaha YZ450F (2017)

On-The-Job Use

• Motocross racing and competitive tracks
• Off-road trail riding and enduro events
• Recreational dirt bike performance restoration
• Engine rebuilds and top-end maintenance

Specs At A Glance

Good To Know

Q: Is this top end repair kit compatible with a stock cylinder? A: Yes, it is designed for standard bore cylinders and requires no boring if the cylinder is within factory specifications.

Q: Does the kit come with installation instructions? A: The kit includes detailed instructions for proper assembly, ensuring correct ring alignment and torque specifications.

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