The Best 49Cc Big Bore Kit of 2025 – Reviewed and Top Rated
After hours researching and comparing all models on the market, we find out the Best 49Cc Big Bore Kit of 2025. Check our ranking below.
2,863 Reviews Scanned
- 1.Size:Cylinder Size:44mm;Carb Manifold Intake Diameter:19mm;Air filter:58mm;Piston Pin:12mm;Spark Plug Model:A7TC;Color:Red as pictures;
- 2.Premium Quality:100% Brand New.Never Used.Professional manufacturing,high quality assurance,high toughness,corrosion resistance,rustproof and durable,long life service.
- 3.Fit Model:Replacement for some air cooled Chinese Mini Moto models including Mini Dirt bike, CRX50 Dirtbike Coyote Midi Quad ATV Mini Racing bike. Runs a 30-1 two stroke oil mix
- 4.Package Included:Big bore 53cc 54cc engine cylinder piston head; 3 Big Bore 53cc 54cc update of 2 Strokes 49cc; Mini pit bike ATV Pocket bike Engine cylinder head
- 5.Reminder/Note:To make sure you buy the right product,please read the product description carefully or the image size. Thank you for your attention. If you have any problems or need help, please contact us before or after your purchase. We will do our best to help you with the solution.
- Size:Cylinder Size:44mm;Carb Manifold Intake Diameter:19mm;Air filter:58mm;Piston Pin:12mm;Spark Plug Model:A7TC;Color:Gold.
- 44mm Cylinder Carburetor Air Filter Ignition Coil Set Big Bore 53cc 54cc Top Kit of Piston replacement for 47cc 49cc 2-Stroke Engine Pocket Bike Atv Quad Motocyle.
- Package Included:Big bore 53cc 54cc engine cylinder piston head;3 Big Bore 53cc 54cc update of 2 Strokes 49cc; Mini pit bike ATV Pocket bike Engine cylinder head.
- Preferred Material,Fine Manufacturing,Corrosion Resistant,Wear Resistant.
- Warranty:We Are Always Available To Help Our Customers.If You Are Not Satisfied With The Order,Please Leave Us A Message.Wish You Have A Happy Shopping Experience,We Are Committed To Providing The Best Service.
- Cylinder Dimensioni:44mm/1.73";Intake carburetor manifold diameter:19mm/0.74";Air Filter Inner Diameter:58mm/2.28";Spark plug:A7TC.
- Engine Cylinder Carburetor with Air Filter Ignition Coil Set Replacement for 47cc 49cc ATV Quad Dirt Pocket Bike Mini Motorcycle.
- Improve engine performance,increase horsepower,increase speed.
- Heavy-duty,durable,fuel efficient,and silent to help keep your bike running at peak performance.
- Warranty:We are always available to help our customers.If you are not satisfied with the order,please leave us a message.Wish you have a happy shopping experience,we are committed to providing the best service.
- Piston diameter :44 mm/1.73",piston pin length:37mm/1.46".please check with the size before your stock one.
- Fit for 2 stroke 43cc 47cc 49cc 50cc engine，performance upgrade part for chinese 47/49cc engines (increase your hp by 2hp - 3hp over your regular engine).
- The core components of the kit are precision-manufactured from high-precision materials. the inner walls undergo special hardening and coating treatments,ensuring wear resistance and corrosion resistance for stable performance during prolonged high-speed operation.
- Paired with high-strength pistons,it effectively reduces friction and vibration,delivers exceptional sealing performance,eliminates air leaks,and keeps your engine running like new for years.
- Warranty:we are always available to help our customers.if you are not satisfied with the order,please leave us a message.wish you have a happy shopping experience,we are committed to providing the best service.
- Fitment: Replacement for 2 Stroke 43cc 47cc 49cc Gas Scooter Mini Pocket Bike
- Improved Cooling Performance: The large cylinder liner design contributes to more efficient heat dissipation, lowering engine temperatures and reducing the risk of overheating, ensuring stability and reliability over extended periods of use
- Enhanced Power Output: Through a larger bore design, the engine's intake and exhaust efficiencies are enhanced, significantly increasing power output for riders seeking speed and performance
- Multi-Functional Application: Not only suitable for mini motorcycles, but also compatible with many types of recreational vehicles, such as ATVs and gas scooters, to meet the needs of different users and provide more choices
- Enhanced Driving Experience: By improving engine performance and responsiveness, you will have a smoother driving experience that is suitable for a variety of roads and environments, bringing more fun and challenges
- 【Cylinder Bore】: 47mm / Non-EGR Cylinder
- 【Valve length】: 69mm
- 【Apply to】: GY6 4 stroke 49cc 50cc 60cc 80cc engine upgrade for most of chinese scooter, atv and go karts
- 【Parts included】:GY6 80cc Cylinder Head with 69mm valve, 47mm Bore Cylinder Block, Set of 47mm Piston Assy, Piston, Rings and Wrist Pin, Full Set of Engine Gasket, 6pins CDI, Ignition coil, 4pin AC regulator, relay, A7TC Spark Plug, Set of Intake Manifold and Muffler Bolts, and Exhaust locking ha, Set of 8.5 Gram roller , 69mm Rocker Arms, Valve Seals, Oil Pump Assy with Driving Gear, Camshaft, Camshaft chain 82, belt 699*18*30, Chain adjuster, Oil screen, spring, cover and oil seal, Starter clu
- 【Fit to】Roketa, Sunl, Baja, Taotao, Panterra, Redcat Tank Giovanni Wildfire Xtreme Seaseng Qlink Yiben Jonway Jmstar, Vento
- What you get: 1x 44mm Big Bore Cylinder kit (as shown in the first picture). Installation Instruction are NOT Included. NOTE: Please check the model and size carefully before purchase
- Universal applicability: Cylinder piston kit fits for 2 Stroke 43cc 47cc 49cc Gas Scooter Mini Pocket Bike
- Size: Cylinder inner diameter: 44mm / 1.7" and other detailed dimensions as shown in the pictures
- High quality: The materials used to make the cylinders are chosen in strict accordance with industry standards and are rigorously tested for use after production is complete. Piston gasket kits have precise densities to provide a reliable seal
- 1.Inner Diameter of Cylinder: 47mm
- 2.Outer Diameter of Piston Pin: 13mm
- 3.Easy installation, Upgrade your engine from 50cc to 80cc with more power
- 4.Include Cylinder,Piston,Piston Ring,Piston Pin,Piston Pin Clip,Valve Oil Seal,Gaskets,Tensioner Gasket,Exhaust Gasket,Intake&Exhaust Studs,Exhaust Nut
- 5.Please contact us if you have any problem about our products, and we will offer you an satisfied solution
- Package Included: 1 Set
- Fitment: Red 44mm Big Bore Kit Cylinder Piston for 47cc 49cc Mini Moto Dirt ATV Pocket Bike
- This big cylinder kit will upgrade your gy6 50cc 60cc 80cc to 100cc, without EGR, to get more RPM,more power, faster maximum speed.
- 69mm valve length version
- Simple Installation
- With cylinder body kits, cylinder head kits, camshaft, camshaft seat kits, gaskets kits, oil pump and gear, 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
Last update on 2026-04-16 / Affiliate links / Images from Amazon Product Advertising API
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