Namura .020 Over Bore Piston Kit for Honda fits CRF230F, CRF230L & CRF230M 66mm

Namura .020 Over Bore Piston Kit for Honda

This Namura .020 Over Bore Piston Kit is a 66mm replacement piston for Honda CRF230F, CRF230L, and CRF230M motorcycles, designed to restore engine performance after a bore and rebuild.

Overview

The Namura .020 Over Bore Piston Kit provides a precise 66mm piston for Honda CRF230 engines requiring an oversize bore. This kit is ideal for rebuilding a worn cylinder while increasing displacement. The Namura .020 Over Bore Piston Kit delivers reliable compression and durability.

Built For Performance

• Precision-machined from high-silicone aluminum alloy for strength and heat resistance
• Includes piston, rings, wrist pin, and circlips for a complete rebuild
• 0.020 over bore size allows restoration of worn cylinders
• 66mm piston diameter for Honda CRF230F, CRF230L, and CRF230M
• Designed to meet or exceed OEM specifications
• Lightweight design reduces reciprocating mass for improved throttle response

Fits These Machines

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

On-The-Job Use

• Rebuilding Honda CRF230 engines after cylinder wear
• Restoring compression and power in off-road motorcycles
• Replacing worn original pistons during top-end overhauls
• Preparing engines for recreational trail riding and motocross

Specs At A Glance

Good To Know

Q: Is this piston kit compatible with a stock cylinder? A: This .020 over bore piston kit requires the cylinder to be bored to 66mm, so it is not compatible with a standard 65.5mm bore.

Q: What is included in the kit? A: The kit typically includes the piston, piston rings, wrist pin, and circlips; check the product listing for exact contents.

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