Namura Standard Bore Top End Rebuild Kit Size B for Honda CR80R 1986-1991 47mm

Namura Standard Bore Top End Rebuild Kit Size B for Honda CR80R

This top end rebuild kit from Namura is a direct replacement for the stock piston and rings in Honda CR80R dirt bikes from 1986 to 1991, featuring a 47mm standard bore size B.

Overview

The Namura Standard Bore Top End Rebuild Kit Size B is designed to restore compression and performance in the Honda CR80R two-stroke engine. This kit includes a precision-machined piston, rings, wrist pin, and circlips for a complete top end rebuild. It is engineered for 1986-1991 models with a 47mm bore, suitable for riders looking to refresh their engine.

Built For Performance

• Standard bore size B for a precise factory-spec fit
• Includes all necessary components: piston, rings, wrist pin, circlips
• Manufactured by Namura using high-strength aluminum alloy
• Designed specifically for the Honda CR80R 47mm cylinder
• Engineered for 1986-1991 models for guaranteed compatibility

Fits These Machines

• for Honda CR80R (1986-1991)

On-The-Job Use

• Commonly used for top end rebuilding on Honda CR80R motocross bikes
• Restores lost compression and power in aged two-stroke engines
• Ideal for competitive riding and recreational trail use
• Allows riders to refresh the engine without boring the cylinder

Specs At A Glance

Good To Know

Q: What does "Standard Bore Size B" mean? A: It indicates the piston dimension within OEM tolerance for a stock cylinder, ensuring a proper fit without the need for boring.

Q: Does this kit come with a gasket set? A: No, this kit includes piston, rings, wrist pin, and circlips; gaskets are sold separately.

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