150cc Go Kart and Dune BUggy performance parts: 4-stroke GY6 quad accessories and after-market performance parts.

"I have owned 5 different scooters over the years. 250cc CFMOTO, Roketa 150cc 4-stroke GY6, United Motors 50cc 2-stroke and a SunL 50cc 4-stroke QMB139. I can rest assured that no matter what make or model I have, Partsforscooters.com will always have the parts I need. You have a customer for life!"
Mike R.-California

"I can say, without hesitation, service at your company far exceeds any other of the many distributors & manufacturers I deal with on a daily basis. Prior to opening my shop I spent 23 years as a project manager & customer service manager so I set the bar high for customer service & efficiency. Good job!" Bill Randall, President Fun & Functional Transportation

Results 1-25 of 81

Performance parts and accessories for 150cc and 125cc Automatic Off-Road Karts with the 4-stroke GY6 QMJ157 QMJ152 engine.
New performance parts such as big bore kits, CDIs, custom chrome parts, carburetors, roller weights, variators, kevlar belts and much more.*Note: The stock horsepower for the GY6 engine is 7.27 under load.

Cylinder Set for 180cc Power Kit

Cylinder Set for 180cc Power Kit

Part #: 169-172

Hoca GY6 4T Power Pack

Hoca 4T Racing Kit for 150cc and 125cc GY6 4-stroke Scooters and Engines. This kit includes everything you need to increase overall speed, horsepower and torque.

Part #: 169-162

Hoca GY6 61mm Big Bore Cylinder Kit

Hoca 61mm Big Bore Cylinder Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-173

Hoca GY6 63mm Big Bore Cylinder Kit

Hoca, 63mm Big Bore Cylinder Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-53

Hoca GY6 Ceramic Big Bore Kit

Hoca 58.5mm Ceramic Big Bore Kit with Nikasil Cylinder Coating for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-277

Hoca GY6 Ceramic Big Bore Kit

Hoca 63mm Ceramic Big Bore Kit with Nikasil Cylinder Coating for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-278

Hoca Performance Transmission Kit

Hoca Performance Transmission Kit for 150cc and 125cc GY6 4-stroke engine based vehicles.

Part #: 169-159

Hoca 4-Valve Cylinder Head Kit GY6

Hoca 4-Valve Cylinder Head Kit Honda

Part #: 169-167

180cc Cylinder Head

180cc Cylinder Head for the 180cc Big Bore Power Kit.

Part #: 169-205

Hoca GY6 61mm Cylinder Head

Hoca GY6 61mm Complete Cylinder Head for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-204

Hoca GY6 Piston Kit for 4-Valve Head

Hoca GY6 Piston Kit for 4-Valve Head

Part #: 169-169

Millimeter Size

Hoca GY6 Performance Piston and Ring Set

Hoca Performance Piston & Ring Set. Choose from 61mm and 63mm sizes.

Part #: 169-61

Millimeter Size

Piston Pin

Piston Pin for 170cc and 180cc GY6 Big Bore kits.

Part #: 169-63

180cc GY6B Gasket Set

Gasket set for GY6B short-case engines with the 170cc and 180cc Big Bore Kits.

Part #: 130-31

180cc GY6 Cylinder Head & Base Gasket

63mm Cylinder Head and Cylinder Base gasket for the GY6 180CC Big Bore Head Kit.

Part #: 130-32

GY6 Adjustable CDI

Racing CDI with adjustable timing for customized tuning on most 150cc and 125cc GY6 engine based vehicles.

Part #: 169-114

Universal Parts GY6 Performance CDI

No Rev Limit Performance CDI with Alternating Current for 150cc and 125cc 4-stroke GY6 engines.

Part #: 169-27

Power Regulator

Power Regulator

Part #: 270-26

Current Stabilizer (*Click* for in-stock date)

Performance Current Stabilizer for 12v systems.

Part #: 169-4

GY6 Performance Alternator Kit

Performance Rechargable Alternator Kit for 150cc and 125cc GY6 4-stroke QMJ152/157 QMI152/157 engines.

Part #: 169-56

GY6 Stroker Crank

2MM Stroker Crank for the GY6 125cc and 150cc engines.

Part #: 169-47

Hoca GY6 Performance Camshaft

Hoca High Angle Performance Camshaft Type-2 for 150cc and 125cc GY6 4-stroke engines.

Part #: 169-156

GY6 Performance Intake

Performance Power Chrome Intake Manifold for 150cc and 125cc GY6 4-stroke engines.

Part #: 169-29

GY6 Head Breather Kit

Head Breather kit for GY6 150cc and 125cc 4-stroke engines.

Part #: 169-8

Hoca Oil Preassure Release/Breather Kit

Hoca Oil Pressure Release Kit for 150cc and 125cc GY6 4-stroke engines and engine based vehicles.

Part #: 169-166

Results 1-25 of 81