Namura .040 Over Bore Top End Repair Kit for Honda CRF230F CRF230L 230M 66.5mm

.040 Over Bore Top End Repair Kit for Honda

This top end repair kit provides all necessary components for rebuilding the cylinder head on Honda CRF230 series dirt bikes, featuring a .040 over bore and 66.5mm piston size for increased displacement and performance.

Overview

This Namura top end repair kit is designed for Honda CRF230F, CRF230L, and CRF230M models, delivering a complete set of parts to restore top-end performance. The kit uses a .040 over bore (66.5mm) to refresh worn cylinders and boost power output. It is an ideal solution for riders seeking reliable replacement components for their Honda dirt bike.

Built For Performance

• Includes piston, rings, wrist pin, and circlips for a complete top end rebuild
• High-strength aluminum alloy piston for durability and heat dissipation
• Precision-machined cylinder bore ensures proper fit and compression
• Compatible with standard Honda CRF230 cylinder head and cylinder jug
• Designed for easy installation with basic mechanical skills

Fits These Machines

• for Honda CRF230F
• for Honda CRF230L
• for Honda CRF230M

On-The-Job Use

• Trail riding and off-road racing on Honda CRF230 models
• Engine rebuild after high-mileage or piston wear
• Performance upgrade for motocross or enduro competitions
• Regular maintenance to restore lost compression and power

Specs At A Glance

Good To Know

Q: Does this kit include gaskets and seals? A: Yes, the top end repair kit comes with a complete gasket set for a hassle-free installation.

Q: Is this kit compatible with stock cylinder heads? A: Yes, it is designed to work with the factory cylinder head and cylinder jug on Honda CRF230 models.

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