Namura .060 Over Bore Piston Kit for Honda XR70R & CRF70F fits 1997-2012 48.5mm

Namura .060 Over Bore Piston Kit for Honda

This Namura .060 over bore piston kit replaces the original piston in Honda XR70R and CRF70F models from 1997-2012, featuring a 48.5mm bore to restore compression and performance.

Overview

The Namura .060 Over Bore Piston Kit is a direct fit for Honda XR70R and CRF70F dirt bikes, increasing displacement with a 48.5mm bore. This .060 over bore piston kit includes rings and wrist pin, providing a complete solution for top-end rebuilding on 1997-2012 models.

Built For Performance

• 48.5mm bore size provides a .060 over bore to clean up worn cylinders
• High-silicon aluminum alloy piston resists heat and wear
• Includes piston rings and wrist pin for a complete kit
• Precision-machined to OEM tolerances for reliable fitment

Fits These Machines

• for Honda XR70R (1997-2012)
• for Honda CRF70F (1997-2012)

On-The-Job Use

• Rebuilding the top end of a Honda XR70R or CRF70F engine
• Replacing a worn piston to restore compression and power
• Performing a .060 over bore repair on cylinders that are scored or out of round

Specs At A Glance

Good To Know

Q: Does this kit require cylinder honing or boring? A: Yes, the cylinder must be bored to 48.5mm and honed to accept the new piston and rings properly.

Q: What clearance is recommended for this piston? A: Follow the factory service manual for piston-to-cylinder wall clearance, typically 0.002-0.003 inches.

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