• 57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine - goofitmoto
  • 57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine - goofitmoto
  • 57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine - goofitmoto
  • 57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine - goofitmoto
  • 57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine - goofitmoto
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GOOFIT

57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine

57.4mm Piston Ring Assembly Kit for GY6 150cc 157QMJ Engine

$11.99
$11.99
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Product Overview

Restore your scooter's engine performance with this professional 57.4mm Piston Assembly Kit. Specifically designed for the ubiquitous GY6 150cc (157QMJ) platform, this kit is the standard top-end replacement for 150cc 4-stroke scooters, mopeds, and ATVs. It ensures optimal compression and high-reliability operation for your daily commute or off-road adventures.

Product Compatibility

This kit is compatible with almost all Chinese-manufactured 150cc scooters and ATVs using the GY6 air-cooled engine architecture.

Vehicle Type Popular Compatible Brands & Models
Scooter / Moped TaoTao, Jonway, Roketa, VIP Future Champion, Wolf Brand, Vespa Clones
ATV / Go Kart Kandi, Yerf-Dog, Hammerhead, Carter Talon (150cc Models)
Engine Series GY6 150cc, 157QMJ, 1P57QMJ
Brands JCL, SUNL, Peace Sports, Ice Bear, Bintelli

Specifications

Component Metric Measurement Imperial Measurement
Piston Diameter 57.4mm 2.25"
Wrist Pin Diameter 15mm 0.59"
Wrist Pin Length 42mm 1.65"
Engine Platform GY6 150cc --
Engine Stroke 4-Stroke --

Key Features

  • Standard OEM Precision: Precision-engineered to a 57.4mm bore to match factory specifications for GY6 150cc engines.
  • Superior Thermal Dissipation: Designed with a specialized heat-transfer structure to effectively manage operating temperatures in air-cooled configurations.
  • High-Toughness Construction: Built from durable, rustproof alloys that resist corrosion and mechanical fatigue under high-speed operation.
  • Low-Friction Sealing: Includes a full set of high-performance rings that provide an airtight seal while minimizing friction against the cylinder wall.
  • Direct Drop-In Kit: Comes complete with the piston, wrist pin, compression rings, oil rings, and circlips for a fast and efficient engine rebuild.
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Fitment FAQ

Will this part fit my specific model and year?

This cylinder piston kit is intended for This kit is compatible with almost all Chinese-manufactured 150cc scooters and ATVs using the GY6 air-cooled engine architecture.; Vehicle Type; Popular Compatible Brands & Models; Scooter / Moped; TaoTao, Jonway, Roketa, VIP Future Champion, Wolf Brand, Vespa Clones; ATV / Go Kart; Kandi, Yerf-Dog, Hammerhead, Carter Talon (150cc Models). Key physical/spec details from the product data include Piston Diameter: 57.4mm, Wrist Pin Diameter: 15mm, Wrist Pin Length: 42mm. 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/Roketa/TaoTao 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 Piston Diameter: 57.4mm, Wrist Pin Diameter: 15mm, Wrist Pin Length: 42mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.