• 47mm Piston Rings Set for GY6 80cc 139QMB Engine - goofitmoto
  • 47mm Piston Rings Set for GY6 80cc 139QMB Engine - goofitmoto
  • 47mm Piston Rings Set for GY6 80cc 139QMB Engine - goofitmoto
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GOOFIT

47mm Piston Rings Set for GY6 80cc 139QMB Engine

47mm Piston Rings Set for GY6 80cc 139QMB Engine

$7.99
$7.99
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Product Overview

Ensure peak engine performance with this premium 47mm Piston Ring Set, specifically designed for GY6 80cc (139QMB) engines and big bore upgrade kits. These rings are engineered to withstand the intense heat and pressure of high-compression 4-stroke engines, providing a superior seal that restores lost power and improves fuel efficiency in scooters, ATVs, and mopeds.

Product Compatibility

Designed for the popular GY6 80cc platform and common Chinese-manufactured small displacement bikes.

Vehicle Type Common Compatible Models
Scooter / Moped TaoTao, Jonway, Peace Sports, Wolf Brand (80cc Upgraded Models)
Engine Series GY6 139QMB, 1P39QMB (47mm Big Bore Kit)
Compatible Models JH70 Moped, Various 80cc Chinese Quads & Go Karts
Fitment Note Standard replacement for 47mm bore cylinder assemblies

Specifications

Component Metric Measurement Imperial Measurement
Main Ring Diameter 47mm 1.85"
Oil Ring Diameter 48.85mm 1.93"
Inner Ring Diameter 43.89mm 1.73"
Engine Type 4-Stroke Air-Cooled --
Material High-Strength Alloy Steel --

Key Features

  • Extreme Durability: Manufactured from high-strength alloy steel with advanced surface treatments for exceptional wear and corrosion resistance.
  • High-Pressure Resilience: Specifically engineered to maintain a perfect seal under the harsh temperatures and pressures found in 80cc modified engines.
  • Restored Compression: Precision-designed ring profiles effectively prevent gas leakage, boosting engine torque and overall work efficiency.
  • Engine Longevity: By reducing mechanical friction against the cylinder wall, these rings significantly extend the service life of your top-end components.
  • Precision Fitment: Built to exact OEM standards for a seamless installation in 47mm cylinders, ensuring reliable operation from the first start.
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Fitment FAQ

Will this part fit my specific model and year?

This cylinder piston kit is intended for Designed for the popular GY6 80cc platform and common Chinese-manufactured small displacement bikes.; Vehicle Type; Common Compatible Models; Scooter / Moped; TaoTao, Jonway, Peace Sports, Wolf Brand (80cc Upgraded Models); Engine Series; GY6 139QMB, 1P39QMB (47mm Big Bore Kit). Key physical/spec details from the product data include GY6 139QMB, 1P39QMB (47mm Big Bore Kit), Standard replacement for 47mm bore cylinder assemblies, Main Ring Diameter: 47mm. 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/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 GY6 139QMB, 1P39QMB (47mm Big Bore Kit), Standard replacement for 47mm bore cylinder assemblies, Main Ring Diameter: 47mm. If any connector, mounting point, size, or year detail is different, confirm fitment before installation.