150cc ATV 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 83

Performance parts and accessories for 150cc and 125cc Automatic ATVs with 4-stroke GY6 QMJ157 QMJ152 engines.
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.

Hoca GY6 4T Power Pack

Part number: 169-162

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.

Hoca GY6 61mm Big Bore Cylinder Kit

Part number: 169-173

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

Hoca GY6 61mm Cylinder Head

Part number: 169-204

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

Hoca GY6 63mm Big Bore Cylinder Kit

Part number: 169-53

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

Hoca GY6 Ceramic Big Bore Kit

Part number: 169-277

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

Hoca GY6 Ceramic Big Bore Kit

Part number: 169-278

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

Cylinder Set for 180cc Power Kit

Part number: 169-172

Cylinder Set for 180cc Power Kit

Hoca 4-Valve Cylinder Head Kit GY6

Part number: 169-167

Hoca 4-Valve Cylinder Head Kit Honda

180cc Cylinder Head

Part number: 169-205

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

Hoca Performance Transmission Kit

Part number: 169-159

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

GY6 Adjustable CDI

Part number: 169-114

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

Universal Parts GY6 Performance CDI

Part number: 169-27

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

Power Regulator

Part number: 270-26

Power Regulator

Dragon Performance Brake Line

Part number: 169-120

Dragon Performance High Pressure Brake Line.

GY6 Performance Alternator Kit

Part number: 169-56

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

GY6 Stroker Crank

Part number: 169-47

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

GY6 Performance Intake

Part number: 169-29

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

Light Weight Drive Plate

Part number: 169-6

Performance Drive Plate for 150cc and 125cc 4-stroke GY6 engine based scooters and vehicles.

GY6 Performance Drive Plate

Part number: 169-39

Performance Drive Plate for 150cc and 125cc GY6 engines and engine based vehicles.

GY6 Head Breather Kit

Part number: 169-8

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

Moveable Sheave

Part number: 169-28

Moveable Sheave for 150cc and 125cc 4-stroke GY6 engines.

GY6 Racing Variator Set

Part number: 169-67

GY6 Racing Variator Set. Roller weights not included.

Dr. Pulley GY6 Variator Kit

Part number: 169-263

Dr. Pulley Performance Variator Assembly for 125cc & 150cc 4-stroke GY6 engines.

Hoca Teflon Coated Variator Set

Part number: 169-24

Hoca Performance Teflon Coated Pulley/Variator set for 125/150cc GY6 engines.

Dr. Pulley 18x14 Sliding Roller Weights

Part number: 169-218

Dr. Pulley 18x14 Sliding Roller Weights for 125/150cc 4-stroke GY6 engines.

Results 1-25 of 83