Namura Standard Bore Size B Top End Repair Kit for KTM 250 EXC fits 2005 66.4mm

Standard Bore Size B Top End Repair Kit for KTM 250 EXC

This top end repair kit, produced by Namura, includes the piston, rings, pin, and gaskets needed to rebuild the cylinder of a KTM 250 EXC, cross-referencing OEM part numbers for 2005 models.

Overview

The Standard Bore Size B Top End Repair Kit for KTM 250 EXC provides a complete set of components to refresh the top end of your 2005 KTM 250 EXC with a 66.4mm bore. This top end repair kit is engineered to restore compression and performance, making it an essential top end repair kit for riders maintaining their KTM 250 EXC.

Built For Performance

• Precision-machined 66.4mm piston matches factory bore specifications
• High-strength rings provide reliable sealing and reduced blow-by
• Includes wrist pin and circlips for secure piston installation
• Complete gasket set ensures a leak-free assembly
• Durable cylinder sleeve compatibility for long service life

Fits These Machines

• for KTM 250 EXC (2005)

On-The-Job Use

• Trail riding and enduro competitions requiring top-end rebuilds
• Routine maintenance for high-hour KTM 250 EXC engines
• Restoration of older 2005 KTM 250 EXC models
• Performance rebuilds for motocross and off-road racing

Specs At A Glance

Good To Know

Q: Does this kit include a cylinder? A: No, this top end repair kit includes the piston, rings, pin, and gaskets but not the cylinder itself.

Q: Can I use this kit for a 2006 KTM 250 EXC? A: This kit is designed for the 2005 model year; confirm your engine specifications match the 66.4mm bore and size B designation.

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