Top 10 Best Gy6 Big Bore Kit In 2022

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You can trust our selection for Gy6 Big Bore Kit Reviews. Because We have worked hard studying and analyzing 48365 reviews for Gy6 Big Bore Kit and rating them. It was a difficult job to list only ten products for Gy6 Big Bore Kit where thousands of them available online. I hope it will help you to take final decision for Best Gy6 Big Bore Kit.

Comparison Chart for Best Gy6 Big Bore Kit

Our team scanned 48365 reviews before putting any suggestions for the Gy6 Big Bore Kit in this article.

NoProductScoreAction
1Glixal 52mm Big Bore Cylinder Kit Rebuild Kit GY6 49cc 50cc to 105cc 139QMB 139QMA Scooter Moped ATV Go-Kart9.8Buy On Amazon
2GY6 Cylinder Rebuild Kit 100cc Big Bore Kit With Racing CDI/Ignition Coil/Spark Plug/Clutch Spring / 50mm Bore Upgrade Set Compatible With 69mm Valve 49CC 50CC 139QMB Moped Scooter Engine9.8Buy On Amazon
369mm Valve Big Bore Kit 100cc replacement for GY6 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with Racing CDI Ignition Coil Performance Spark Plug9.4Buy On Amazon
4hongyu 50mm Bore Cylinder Head Kit for GY6 50cc to 100cc Engine with 69mm Valves scooter taotao kazuma ATV Moped9.4Buy On Amazon
5Chanoc 61mm 180cc Big Bore Kit for GY6 150cc ATV Scooter 157QMJ Engine9.4Buy On Amazon
6GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit for 64mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring9Buy On Amazon
7GOOFIT Big Bore Cylinder Rebuild Kit for GY6 50cc 139QMB Racing Scooter Parts 64mm Valve9Buy On Amazon
8Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit Rebuild Kit GY6 100cc 50mm Moped ATV Go-Kart8.6Buy On Amazon
9CLEO GY6 180cc Cylinder Head Kit Assy 61mm Big Bore with 69mm Valves for 152QMI 157QMJ Scooter Moped ATV Go Kart Quad8.4Buy On Amazon
10Complete GY6 Cylinder Head Rebuild Kits with valves8.4Buy On Amazon
Disclaimer: As An Amazon Associate I Earn From Qualifying Purchases.

1. Glixal 52mm Big Bore Cylinder Kit Rebuild Kit GY6 49cc 50cc to 105cc 139QMB 139QMA Scooter Moped ATV Go-Kart

  • 1.Please note this kit is only used for GY6 139QMB 4-Stroke Engine.
  • 2.Inner Diameter of Cylinder: 52mm
  • 3.Outer Diameter of Piston Pin: 13mm
  • Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut.
  • 5. High Performance Upgrade 52mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine

2. GY6 Cylinder Rebuild Kit 100cc Big Bore Kit With Racing CDI/Ignition Coil/Spark Plug/Clutch Spring / 50mm Bore Upgrade Set Compatible With 69mm Valve 49CC 50CC 139QMB Moped Scooter Engine

  • Compatible With: GY6 4-stroke 49cc 50cc 60cc 80cc from china.
  • Compatible With: Zhong Hu 50cc / Zongshen Metro 50cc Agility 50 / People S50 4T / Suer 8 50 4T Pagsta mini 49cc–50cc 4 stroke Sinski XSJ50QT-6 / XSJ50QT-B Bahama / Maui / Sicily / Tank / Baotian 50QT-9–Roketa 49cc 50cc 4 stroke scooter Sunl SL50QT-16 / SL50QT-18 / SL50QT-2 / SL50QT-3.
  • Compatible With: Jalon JL50QT-15 / JL50QT-16 / JL50QT-18 / JL50QT-21 / JL50QT-21 Falcon Baotian BT49QT-2 / BT49QT-7 / BT49QT-9 / BT50QT-9 / BT50QT-11 / Dotera 50QT-11 motorsports SC-50 sun city / primo / DR50 / Dirt Runner 49–Baja 49cc 50cc 4 stroke scooters GT5 / Fastwind / AMT50-A1 / CY50-A / CY50-B / CY50-T3 / Funny50 / Roman 50 / Retro 50 / Speedy50 / Venus50–Taotao 49cc 50cc 4 stroke scooter.
  • Function: You can get higher RPM, power and speed without EGR.
  • Content: 1* set of 6 gram racing pure copper roller weights 1* cylinder head with 69mm valve 1* rocker arms assembly 2* valve seals 1* oil pump assy 1* 50mm bore cylinder block 1* set of 50mm piston assy 1* all engine gasket 1* set of intake manifold, muffler bolts, and exhaust locking hat 1* 6pins racing AC CDI 1* racing ignition coil 1* racing 3-electrode A7TC spark plug 1* set of clutch small racing spring 1* racing clutch big spring.

3. 69mm Valve Big Bore Kit 100cc replacement for GY6 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with Racing CDI Ignition Coil Performance Spark Plug

  • This big bore kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.
  • We have 2 versions, 64mm and 69mm valve length version. Please confirm before ordering.
  • Easy installation With racing AC CDI, ignition coil and racing spark plug included
  • This is one of the best upgrades you can do to your 50cc Scooter

4. hongyu 50mm Bore Cylinder Head Kit for GY6 50cc to 100cc Engine with 69mm Valves scooter taotao kazuma ATV Moped

  • Fit GY6 50cc to 100cc 139QA 139QMB Engine
  • Head Valve length 69mm, not 64mm
  • Cylinder Bore Diameter : 50mm
  • Kit includes: Cylinder head, cylinder block assembly, intake pipe screw, exhaust pipe screw, exhaust pipe nut, exhaust pipe gasket four locating pins.
  • For your quick use of new accessories, please consult the picture information and product description before purchasing.

5. Chanoc 61mm 180cc Big Bore Kit for GY6 150cc ATV Scooter 157QMJ Engine

  • 61mm bore
  • Upgrade your engine from 150cc to 180cc
  • Widely used for GY6 150 engine upgrade
  • Fit for 157QMJ and 1P57QMJ engine
  • Package come with cylinder head,piston,piston rings,stud,gasket

6. GY6 Cylinder Rebuild Kits Trkimal 100cc Big Bore Kit for 64mm Valve 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set with 6pin Racing CDI Ignition Coil Performance Spark Plug Clutch Spring

  • This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.
  • 64mm valve length version
  • Easy Installation
  • Upgrade engine parts included cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, clutch spring sets, copper roller sets, 6pins racing AC CDI, ignition coil and racing 3-electrode spark plug.
  • Upgrades parts kits for most of 50cc scooter

7. GOOFIT Big Bore Cylinder Rebuild Kit for GY6 50cc 139QMB Racing Scooter Parts 64mm Valve

  • It can be Only Used for GY6 4stroke 49cc 50cc engine upgrade
  • Easy installation with video instruction,you can visit the video on our facebook homepage and Youtube.
  • Best way to get more RPM,maximum upgrade kit for GY6 50cc 139QMB engine and 1P39QMB Engine.
  • Valve Length 64mm ,does not for 69mm one
  • The Belt Cover/CVT Cover Gasket is for a Short Case Version

8. Glixal ATMT1-011 139QMB 139QMA Scooter Big Bore Cylinder Kit Rebuild Kit GY6 100cc 50mm Moped ATV Go-Kart

  • 1.Please note this kit is only used for GY6 139QMB 4-Stroke Engine.
  • 2.Inner Diameter of Cylinder: 50mm
  • 3.Outer Diameter of Piston Pin: 13mm
  • Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut.
  • 5. High Performance Upgrade 50mm Cylinder Rebuild Kit for GY6 49cc 50cc 60cc 80cc 100cc engine

9. CLEO GY6 180cc Cylinder Head Kit Assy 61mm Big Bore with 69mm Valves for 152QMI 157QMJ Scooter Moped ATV Go Kart Quad

  • Fit GY6 150cc 180cc 61mm 4 Strokes 152QMI 157QMJ Engine Scooter Moped
  • Cylinder Head:Intake Valve OD 26mm;Exhaust Valve OD 23mm;Combustion Chamber Diameter-61mm
  • Cylinder Body:Bore 61mm;Piston Diameter 61mm; Piston Pin Diameter 15mm ;

10. Complete GY6 Cylinder Head Rebuild Kits with valves

  • Cylinder Bore】: 57.4mm / Non-EGR Cylinder body
  • Full sets of parts】: Complete parts is suitable for motorcycle maintenance shop, motorcycle parts supermarket and personal use with nice price.
  • Apply to】: GY6 4 stroke 125cc/150cc engine for most of chinese scooter, atv and go karts
  • Parts included】:GY6 150cc Cylinder Head Comp, 57.

Gy6 Big Bore Kit Buying Guide


Does the thought of finding a great Gy6 Big Bore Kit stress you out? Has your mind been juggling between choices when it comes to buying Gy6 Big Bore Kit in general, specifically regarding which model to choose?
If that’s the case, know that you’re not alone. Many people find it tough to buy the perfect Gy6 Big Bore Kit for themselves. We understand the stress associated with the buying process!
Since you’re here, you are obviously curious about Gy6 Big Bore Kit Reviews. You’ve been bombarded with information, so you need to find a reputable source with credible options before you make any decisions on which product would be best for your needs.
There are many sources that’ll provide you with that information- buying guides or ratings websites, word-of-mouth testimonials from friends or family members, online forums where users share their personal experiences, product reviews specifically found all over the internet and YouTube channels. Only thorough research will ensure that you get the right product.
But that’s not always easy, right? That's why we've taken time to compile a list of the best Gy6 Big Bore Kit in today's market, on your behalf, so that there will be no more worries for you.
How did we come up with the list, you ask? How did we create this buying guide?
  • First, our algorithms collected as much information available about these products from trusted sources.
  • We employed both Artificial Intelligence and large data volume to validate all collected information.
  • Then our AI ranked them on their quality-to-price ratio using industry-standard criteria that let us pick the best Gy6 Big Bore Kit currently on the market!
The products aren’t chosen randomly. We consider several criteria before assembling a list. Some of the criteria are discussed below-
  1. Brand Value: What happens when you go for a not-so-reputable brand just because the price seems cheap? Well, the chance of getting a short-lasting product goes higher. That’s because the renowned brands have a reputation to maintain, others don’t.
Top Gy6 Big Bore Kit brands try to offer some unique features that make them stand out in the crowd. Thus hopefully, you’ll find one ideal product or another in our list.
  1. Features: You don’t need heaps of features, but useful ones. We look at the features that matter and choose the top Gy6 Big Bore Kit based on that.
  2. Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products of higher specifications, but with the right balance.
  3. Customer Ratings: The hundreds of customers using the Gy6 Big Bore Kit before you won’t say wrong, would they? Better ratings mean better service experienced by a good number of people.
  4. Customer Reviews: Like ratings, customer reviews give you actual and trustworthy information, coming from real-world consumers about the Gy6 Big Bore Kit they used.
  5. Seller Rank: Now, this is interesting! You don’t just need a good Gy6 Big Bore Kit, you need a product that is trendy and growing in sales. It serves two objectives. Firstly, the growing number of users indicates the product is good. Secondly, the manufacturers will hopefully provide better quality and after-sales service because of that growing number.
  6. Value For The Money: They say you get what you pay for. Cheap isn’t always good. But that doesn’t mean splashing tons of money on a flashy but underserving product is good either. We try to measure how much value for the money you can get from your Gy6 Big Bore Kit before putting them on the list.
  7. Durability: Durability and reliability go hand to hand. A robust and durable Gy6 Big Bore Kit will serve you for months and years to come.
  8. Availability: Products come and go, new products take the place of the old ones. Probably some new features were added, some necessary modifications were done. What’s the point of using a supposedly good Gy6 Big Bore Kit if that’s no longer continued by the manufacturer? We try to feature products that are up-to-date and sold by at least one reliable seller, if not several.
  9. Negative Ratings: Yes, we take that into consideration too! When we pick the top rated Gy6 Big Bore Kit on the market, the products that got mostly negative ratings get filtered and discarded.

These are the criteria we have chosen our Gy6 Big Bore Kit on. Does our process stop there? Heck, no! The most important thing that you should know about us is, we're always updating our website to provide timely and relevant information.
Since reader satisfaction is our utmost priority, we have a final layer of filtration. And that is you, the reader! If you find any Gy6 Big Bore Kit featured here Incorrect, irrelevant, not up to the mark, or simply outdated, please let us know. Your feedback is always welcome and we’ll try to promptly correct our list as per your reasonable suggestion.

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