Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150 Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150
Scooterworks Big Bore Kit (63mm, 180cc); GY6 150

Scooterworks

Scooterworks Big Bore Kit (63mm, 180cc); GY6 150

SKU 1100-1438
$127.00
Shipping calculated at checkout.
Description

Scooterworks Big Bore Kit (63mm, 180cc) for 150cc GY6 engines. Upgrades to 180cc based on a stock stroke of 57.8mm!

Original Parts For Scooters SKU 164-310

NOTE: You may need to modify your engine case to accommodate the larger cylinder; the engine boring tool is available online (SKU 202-37).

Specifications:

  • Includes cylinder, piston, pin, circlips, rings, head gasket and base gasket
  • Upgrades to 180cc
  • Bore: 63mm
  • Overall Height: 90.5mm
  • Cylinder Sleeve Outer Diameter: 64.9mm

Compatibility:

157QMJ-based 125cc / 150cc / 169cc engines with the following engine codes:

157QMJ 161QMK 152QMI 1P61QMK
YN1P57QMJ 1P52FMI 154FMI JJ157QMJ
1P57QMJ BN157QMJ BN161QMK-A Other QMJ, QMK, and QMI models

Don't see your engine listed? If the engine code includes "QM" or "FM", this product is compatible with your vehicle.

About Scooterworks: Since our beginning in 1989, Scooterworks has become a major supplier of parts and accessories for vintage and modern scooters. We have everything you need, from wear-and-tear items like tires and oil filters to after-market parts from brands like Malossi, NCY, Prima, YSS, Dr. Pulley, and more.
Product Diagrams
  • Same day shipping for orders placed before 2PM (CST) M-F
  • 30-day return period
  • Flat-rate shipping for orders shipped to the 48 Contiguous United States.
Since 1989

Supplying parts and accessories for vintage and modern scooters since 1989 – Over Half a Million Served and Counting!

Comprehensive Resource

From wear-and-tear items like tires and oil filters to aftermarket parts from industry-leading brands.

Dealer Focused

With a committed team of dealer-focused sales reps and streamlined pricing and shipping processes, we are dedicated to supporting your business.

Innovative

Our team constantly strives to develop and source the best new products for your scooter.