Search  for anything...

GY6 39mm/1.54" Piston Ring Kit with 13mm Pin 30mm Length for 50CC

  • Based on 39 reviews
Condition: New
Checking for the best price...

Buy Now, Pay Later


As low as $2 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Zip, Apple Pay, and Google Pay. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Sep 7
Order within 23 hours and 16 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Size: 50CC


Features

  • Fitment: Fit for most brand with GY6 50cc 80cc 100cc 139QMB 139QMA engine, such as Zongshen Lifan Sunl JCL Buyang Peace Haojue Loncin Jetmoto Kangdi SYM Jonway Taotao Coolster Baoyue Apollo Roketa
  • Piston Diameter: 1.54"/39mm;Piston Height: 1.32"/33.5mm;Piston Pin Diameter: 0.51"/13mm;Piston Pin Length: 1.18"/30mm;Piston Ring Diameter: 1.57"/40mm
  • High-Quality: This GY6 piston is made of high-quality aluminum alloy material, which offers the advantages of being lightweight, having good thermal conductivity, excellent machinability, good wear and corrosion resistance, and high strength. These advantages effectively improve engine performance and reliability while extending the piston's lifespan. The piston is designed to withstand high temperatures and pressures and has undergone rigorous testing to ensure its quality
  • Package Include: 1 x 1.54"/39 mm Piston, 5 x Piston Rings, 1 x 1.18"/30 mm Piston Pin, 2 x Piston Clips
  • AFTER SALE:If you have any questions or are not completely satisfied with your purchase, please leave us a message

Description

In the roar of the engine, we have been deeply ploughing the field of power transmission for 3765 days and nights, DEHE has engineered reliability into every drivetrain component. 370K global users trust traceable components,We deliver 3D-fit validation, 40% faster torque presets, and certified durability reports – measurable precision, sourced materials, road-proven engineering that outlasts your journey Precision-cut chrome-moly rings for 49.5-52cc engines. Pre-lapped 0.10mm endgap + anti-seize coating. Three-piece set (compression/scraper/oil control). Moped/mini bike ready OE-spec triple-layer design (chrome/steel/ductile iron). 8500 RPM limit, stepped oil rails + phosphate coating. QMB139 engine compatible DLC-coated top ring with gas porting. Nitromethane-resistant, dry sump compatible. Includes bore break-in abrasive Chromium-plated compression rings + dual-phase oil control. Handles 50-150cc bores. Mud & dust tested Napier-style oil ring prevents blowby. 0.05-0.12mm groove clearance pre-set. Ethanol fuel safe Will this 39mm piston kit fit my 49cc GY6 scooter? Yes, this 39mm piston kit is designed as a universal replacement for many 49cc-50cc GY6 engines. Please verify your engine's exact cylinder bore size before purchase to ensure a proper fit without modification What is included in this piston kit package? The package contains 1 x 39mm piston, 5 x piston rings, 1 x piston pin, and 2 x piston clips. This is a complete set ready for installation on compatible engines How difficult is the installation process? Installation requires standard mechanical knowledge and tools for engine disassembly/assembly. The parts are designed for a direct fit. We recommend consulting a service manual for your specific engine model Are the rings and clips high quality? The components are manufactured to meet standard specifications for replacement parts. The piston rings are designed to provide an effective seal in compatible, properly sized cylinders How do I ensure this is the correct size for my engine? The correct fit depends on your cylinder's actual bore diameter. We strongly advise precisely measuring your cylinder before ordering to confirm it matches the 39mm piston diameter

Manufacturer: ‎New Olym


Brand: ‎New Olym


Model: ‎YA-HS-50-1


Item Weight: ‎3.52 ounces


Package Dimensions: ‎4.53 x 3.5 x 1.73 inches


Item model number: ‎YA-HS-50-1


Exterior: ‎Machined


Manufacturer Part Number: ‎YA-HS-50-1


OEM Part Number: ‎Tao Tao CY Tao Tao ATM50-A1 Ice Bear PMZ50-5 Lance PCH Bintelli Sprint Kymco Agility Tao Tao E-Master Ice Bear PMZ150-11 Tao Tao Thunder


Position: ‎Front Center


Date First Available: February 26, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Sep 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • Zip Pay in 4
  • Financing through Apple Pay
  • Financing through Google Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Fit like a glove. Perfect!
Size: 150CC
Piston is perfect, got to bore out your 157qmj engine to install.
Reviewed in the United States on July 27, 2025 by HatedOn978

  • Works like it should
Size: 150CC
Shouldn’t be bad reviews but each there own. Install it right and you shouldn’t have any problems
Reviewed in the United States on November 4, 2024 by rico goodwin

  • Check the rung channels
Size: 180CC
Perfect fit finishing quality needs improvement but a little sanding and polishing fixed that right up
Reviewed in the United States on May 30, 2026 by Eric Osborne

  • I thought this would fit , it didn’t
Size: 180CC
No
Reviewed in the United States on August 21, 2026 by harry

  • 100% RECOMMENDED
Size: 150CC
Great quality! It fit perfectly and made the engine run like new again. I was impressed with how well the rings seal my scooter instantly regained its power. Highly recommend!
Reviewed in the United States on August 11, 2025 by Darwin martinez

  • Cheap reliable
Size: 150CC
Yes worked great
Reviewed in the United States on April 8, 2026 by Adrian Shelton

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...