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

Namura .060 Over Bore Top End Kit for Honda

This Namura .060 over bore top end kit for Honda provides a complete set of components for rebuilding the cylinder and piston assembly on Honda XR70R and CRF70F models from 1997 to 2012, with a 48.5mm bore size that is .060 oversize from standard to restore compression and power. OEM cross-reference numbers are not listed, but this kit is designed to match original specifications for these models.

Overview

This Namura .060 over bore top end kit for Honda XR70R and CRF70F is a comprehensive rebuild solution that includes a piston, rings, wrist pin, and cylinder gaskets to refresh your engine's top end. It is engineered for 1997-2012 Honda XR70R and CRF70F models, using a 48.5mm bore size that is .060 oversize to compensate for cylinder wear and restore proper compression. This top end kit is ideal for riders and mechanics looking to extend the life of their Honda off-road motorcycle engine without replacing the entire cylinder.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• .060 over bore size (48.5mm) to match worn cylinder walls
• Includes rings, wrist pin, and circlips for a complete top end overhaul
• Kit includes head gasket and base gasket for easy installation
• Designed to meet OEM tolerances for reliable performance

Fits These Machines

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

On-The-Job Use

• Engine top-end rebuild on Honda XR70R and CRF70F pit bikes
• Restoring compression and power in worn engines
• Off-road trail riding and recreational use
• Mechanics and DIY enthusiasts performing engine restoration

Specs At A Glance

Good To Know

Q: What tools are needed to install this top end kit? A: You will need standard engine tools such as a torque wrench, piston ring compressor, and a service manual for your Honda model. Ensure the cylinder is measured to confirm .060 over bore size is appropriate.

Q: Can this kit be used on a standard bore cylinder? A: No, this kit is designed for cylinders that have been bored .060 oversize; installing on a standard bore cylinder may cause excessive clearance and poor performance.

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