GY6 125/150cc Long Case Engine Assembly Kit

GY6 Long Case Engine Assembly Kit for 125cc and 150cc Scooters

The GY6 Long Case Engine Assembly Kit simplifies your engine rebuild process for 125cc and 150cc GY6 scooters equipped with a long-case belt system. This kit is designed specifically for models using 12" to 14" wheels. It is one of the GY6 150cc scooter parts that comes with pre-installed components, making it easier to get your engine running quickly and efficiently.

Pre-Installed Components

This assembly kit features crankcase bearings and rubber isolation buffers that are factory-installed. This means less time spent on assembly and no need for specialized tools to press these parts in yourself. It’s a straightforward solution for anyone looking to build or replace their engine with minimal hassle.

Compatibility and Design

The engine case in this kit is configured for 54mm head stud spacing, ensuring it fits perfectly with compatible engines. It is important to check the stud spacing of your engine prior to making a purchase, as this case is not suitable for QMK-based engines. The long-case design accommodates the specific needs of scooters with larger wheel configurations.

Specifications

• Engine Compatibility: 157QMJ / 152QMI (125cc / 150cc)
• Head Stud Spacing: 54mm
• Case Type: Long case (fits 12"–14" wheels)
• Material: Die-cast aluminum alloy
• Includes: Left & right crankcase halves, 4 head studs, rubber buffers, breather hose, hardware
• Bearings: Factory pre-installed
• Dimensions: 20" L x 12" W x 5" H

Fitment

This kit is compatible with GY6 scooters that utilize the 157QMJ and 152QMI engine types:

• 157QMJ
• 1P57QMJ
• YN1P57QMJ
• JJ157QMJ
• BN157QMJ
• 152QMI
• 1P52FMI
• 154FMI

Not sure it fits? Contact us with your scooter's make, model and year and we'll confirm the fit before you order.

Shop more: GY6 150cc Scooter Parts (157QMJ) · GY6 Scooter Parts · Scooter Engines & Engine Parts · Scooter Parts