Namura Standard Bore Piston Kit Size A 66.34mm for Honda CR250R 1986-1996 66.4mm

Namura Standard Bore Piston Kit Size A 66.34mm 66.4mm for Honda CR250R 1986-1996

This Namura Standard Bore Piston Kit Size A 66.34mm is a direct replacement for the original piston in Honda CR250R dirt bikes from 1986 to 1996.

Overview

This Namura Standard Bore Piston Kit Size A 66.34mm provides a new piston, rings, wrist pin, and circlips for a complete top-end rebuild. It is specifically designed for Honda CR250R models from 1986 to 1996, restoring lost compression and improving throttle response. This Standard Bore Piston Kit is suitable for weekend trail riders and competitive racers alike, delivering the performance needed for any off-road application.

Built For Performance

• Precision-machined from high-silicon aluminum alloy for lightweight strength
• Includes piston rings, wrist pin, and circlips for a complete kit
• Designed to meet or exceed OEM specifications for fit and function
• Coated skirt reduces friction and wear for longer life
• Each piston is inspected for dimensional accuracy

Fits These Machines

• for Honda CR250R (1986-1996)

On-The-Job Use

• Motocross and supercross racing
• Enduro and trail riding
• Engine rebuilds and top-end overhauls
• High-performance off-road riding

Specs At A Glance

Good To Know

Q: Does this kit include wrist pin bearings? A: Yes, the kit includes a wrist pin and circlips, but the small end bearing should be reused or replaced separately.

Q: Is this a direct replacement for the OEM piston? A: Yes, it is manufactured to OEM specifications for a direct fit, but cylinder bore condition should be confirmed 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.