Namura Forged Standard Bore Piston Kit Size B for Kawasaki KX250 2021-2024 78mm

Namura Forged Standard Bore Piston Kit for Kawasaki KX250 (Size B, 78mm)

This Namura forged standard bore piston kit (Size B, 78mm) is a high-performance replacement piston for Kawasaki KX250 models from 2021 through 2024, providing OEM-level fit and durability.

Overview

The Namura Forged Standard Bore Piston Kit is designed for the Kawasaki KX250, offering a direct replacement piston sized at 78mm with Size B clearance. This forged piston kit delivers reliable power and longevity for motocross and off-road use.

Built For Performance

• Forged 2618 aluminum alloy construction for high strength and heat resistance
• Precision-machined to OEM specifications for easy installation
• Size B piston-to-cylinder clearance ensures proper fit
• Includes piston rings, wrist pin, and circlips for a complete rebuild
• Balanced design reduces vibration and improves engine response

Fits These Machines

• for Kawasaki KX250 (2021)
• for Kawasaki KX250 (2022)
• for Kawasaki KX250 (2023)
• for Kawasaki KX250 (2024)

On-The-Job Use

• Motocross racing
• Trail riding
• Off-road competition
• Engine rebuild and restoration projects

Specs At A Glance

Good To Know

Q: What does Size B mean? A: Size B indicates a specific piston-to-cylinder clearance; always measure your cylinder bore and select the correct size for proper fit.

Q: Is the piston pre-assembled? A: The kit includes the piston, rings, wrist pin, and circlips, but the piston is not pre-assembled; you will need to install the rings yourself.

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