Namura Standard Bore Top End Repair Kit Size B for GAS GAS MC 85 2021-2024 47mm

Standard Bore Top End Repair Kit Size B for GAS GAS

This top end repair kit for GAS GAS MC 85 models includes a piston, rings, wrist pin, and circlips for a 47mm standard bore rebuild.

Overview

The Namura Standard Bore Top End Repair Kit Size B is a complete piston and ring assembly designed to restore compression and performance in GAS GAS MC 85 dirt bikes from 2021 to 2024. This top end repair kit replaces worn components with precision‑machined parts, ensuring reliable power and durability. Riders who regularly maintain their top end will appreciate the quality and fit of this 47mm repair kit.

Built For Performance

• Includes Namura forged piston for strength and light weight
• Chrome‑moly piston ring set for consistent sealing
• Precision‑ground wrist pin and needle bearing reduce friction
• Heat‑treated circlips secure pin in place
• Standard bore size eliminates need for cylinder boring

Fits These Machines

• for GAS GAS MC 85 (2021, 2022, 2023, 2024)

On‑The‑Job Use

• Motocross and supercross racing
• Off‑road trail riding and enduro
• Youth competition and practice sessions
• Engine rebuilds during seasonal maintenance

Specs At A Glance

Good To Know

Q: Does this kit include gaskets? A: No, this top end repair kit contains only the piston, rings, pin, and circlips; gaskets must be purchased separately.

Q: Is the piston compatible with the stock cylinder? A: Yes, it is a standard bore size designed to fit the OEM cylinder without boring, but confirm your cylinder condition before installation.

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