Namura Standard Bore Size B Top End Kit for KTM 125 XC / XC-W 2017-2022 54mm

Standard Bore Size B Top End Kit for KTM

This top end kit includes a piston, rings, wrist pin, and gaskets for rebuilding the cylinder on KTM 125 XC and XC-W models from 2017 to 2022 with a 54mm bore.

Overview

The Namura Standard Bore Size B Top End Kit provides all necessary components to refresh the top end of a KTM 125 XC or XC-W. This kit is designed for standard bore applications using a 54mm piston, ensuring reliable power delivery and durability for off-road riding.

Built For Performance

• Includes forged piston for high-strength and heat resistance
• Precision-machined rings reduce blow-by and improve compression
• Complete gasket set ensures leak-free assembly
• Wrist pin and circlips included for a full rebuild
• 54mm bore size matches OEM specifications

Fits These Machines

• for KTM 125 XC (2017-2022)
• for KTM 125 XC-W (2017-2022)

On-The-Job Use

• Trail riding and enduro competition
• Motocross practice and racing
• Regular top-end maintenance intervals
• Rebuilding after piston wear or seizure

Specs At A Glance

Good To Know

Q: Is this kit compatible with 2016 models? A: This specific kit is designed for 2017-2022 models; verify the engine serial number for compatibility.

Q: Does it include a cylinder? A: No, this kit includes piston, rings, pin, circlips, and gasket set only; the cylinder must be reused or replaced separately.

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