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

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

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

$40.99
$40.99
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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.
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Fitment FAQ

Will this part fit my specific model and year?

This cylinder piston kit is intended for 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. Key physical/spec details from the product data include This 57.4mm head is a direct replacement for the GY6 150cc/125cc (Big Bore) horizontal engine platform., Cylinder Bore Size: 57.4mm / 2.26", 150cc (Standard) & 125cc (Big Bore Upgrade). Use the compatibility table and product photos together before ordering.

Do I need to match the OEM part number?

Yes. If your original part has a stamped OEM or manufacturer number, match that number first before ordering. For this cylinder piston kit, also compare the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height. This is especially important for GY6 GY6 models because similar model names can use different parts by year or trim.

What models or situations does this part not fit?

Do not order this cylinder piston kit for machines outside the listed compatibility, or for units with different bore sizes, piston-pin diameters, stroke lengths, stud spacing, or gasket patterns. Do not rely only on the model name or engine size.

What should I check before ordering?

Before ordering, compare your original part with the photos and check the bore diameter, piston-pin size, gasket pattern, stud spacing, engine code, stroke type, and cylinder height. Recheck listed specs such as This 57.4mm head is a direct replacement for the GY6 150cc/125cc (Big Bore) horizontal engine platform., Cylinder Bore Size: 57.4mm / 2.26", 150cc (Standard) & 125cc (Big Bore Upgrade). If any connector, mounting point, size, or year detail is different, confirm fitment before installation.