57.4mm Cylinder Head Assembly with Gaskets & Spark Plug for 4-Stroke GY6 150cc 152QMI 157QMJ Engine

Product Overview

Restore the compression and sealing of your scooter’s engine with the GOOFIT 57.4mm Cylinder Head Kit. Engineered for the high-demand environments of 4-stroke GY6 150cc motors, this assembly is a universal solution for Chinese-made ATVs, mopeds, and go-karts. By optimizing combustion chamber sealing, this kit not only boosts power output but also improves fuel efficiency, ensuring your vehicle runs smoother and longer with a "ready-to-install" comprehensive package.

Product Compatibility

This 57.4mm head is a direct replacement for the GY6 150cc/125cc (Big Bore) horizontal engine platform.

Engine Platform	Compatible Models	Vehicle Type
GY6 150cc Series	157QMJ / 157QMI	Scooters, ATVs, Go-Karts
GY6 125cc Series	152QMI / 152QMJ	Mopeds, Quads
Compatible Brands	TaoTao, Peace Sports, Ice Bear, Wolf	Most Chinese Scooters

Specifications

Attribute	Details
Cylinder Bore Size	57.4mm / 2.26"
Engine Type	4-Stroke GY6 Horizontal
Included Components	Cylinder Head, Head Gasket, Base Gasket, Spark Plug
Material	High-Grade Aluminum Alloy
Application	150cc (Standard) & 125cc (Big Bore Upgrade)

Key Features

• Universal GY6 Compatibility: Expertly designed to fit a wide range of GY6 150cc engines (157QMJ/157QMI) and 125cc models (152QMI/152QMJ), making it a versatile repair part.
• Enhanced Combustion Sealing: High-quality cylinder head and precision gaskets work together to eliminate leaks, optimizing compression for noticeably improved power and fuel economy.
• Industrial-Grade Durability: Manufactured from premium materials to withstand the intense heat and friction of daily commuting and off-road riding, ensuring a long service life.
• Complete "One-Click" Solution: This kit includes the cylinder head, essential gaskets, and a fresh spark plug, providing everything you need for a professional-grade top-end overhaul.
• Meticulous Precision Design: Every component is engineered to meet or exceed OEM standards, simplifying the installation process and ensuring a perfect bolt-on fit.