GOOFIT
44mm Big Bore Cylinder Kit with 19mm Carburetor & Ignition Coil for 2-Stroke 47cc 49cc Pocket Bike (54cc Upgrade)
44mm Big Bore Cylinder Kit with 19mm Carburetor & Ignition Coil for 2-Stroke 47cc 49cc Pocket Bike (54cc Upgrade)
4.8 / 5.0
(5) 5 total reviews
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Product Overview
Take your mini bike’s performance and style to the next level with the GOOFIT Gold Series Big Bore Upgrade Kit. This "Stage 3" performance bundle transforms your standard 47cc/49cc 2-stroke engine into a high-torque 53cc/54cc powerhouse. Featuring a striking gold anodized finish on the air filter and high-quality components throughout, this kit optimizes your intake, combustion, and ignition systems simultaneously for maximum speed and acceleration.
Product Compatibility
A complete performance overhaul for standard 2-stroke air-cooled mini engines.
| Application | Engine Displacement | Fitment Detail |
| Pocket Bikes / Rocket | 47cc / 49cc 2-Stroke | 44mm Bore / 12mm Pin |
| Mini Quads / ATV | Kids 49cc Models | Performance Ignition Set |
| Mini Dirt Bikes | 49cc Pit Bikes | 19mm Carb Upgrade |
| Mini Motorcycles | Various 2-Stroke Clones | Gold Modified Style |
Specifications
| Attribute | Details |
| Cylinder Bore | 44mm (Upgrades engine to 53cc/54cc) |
| Piston Pin Diameter | 12mm / 0.47" |
| Carburetor Intake | 19mm High-Flow |
| Air Filter Size | 58mm (Gold Racing Style) |
| Spark Plug | Performance A7TC |
| Color Theme | Luxury Gold |
Key Features
- The Ultimate 54cc Power Boost: Replaces your stock top-end with a 44mm big bore cylinder, significantly increasing displacement for massive gains in torque and top speed.
- Gold Modified Aesthetic: Stand out from the crowd with a premium gold-themed air filter and components that give your pocket bike a professional racing look.
- Optimized Intake System: Includes a 19mm large-diameter carburetor and a 58mm high-flow air filter to provide a richer air-fuel mixture for aggressive acceleration.
- High-Output Ignition System: Paired with a racing ignition coil and A7TC spark plug to ensure a stronger spark and more complete combustion even at high RPMs.
- Corrosion & Wear Resistant: Manufactured from preferred high-grade alloys with fine precision machining, ensuring long-term durability and resistance to harsh riding conditions.
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Fitment FAQ
Will this part fit my specific model and year?
This carburetor is intended for A complete performance overhaul for standard 2-stroke air-cooled mini engines .; Application; Engine Displacement; Fitment Detail; Pocket Bikes / Rocket; 47cc / 49cc 2-Stroke; 44mm Bore / 12mm Pin. Key physical/spec details from the product data include 44mm Bore / 12mm Pin, Cylinder Bore: 44mm (Upgrades engine to 53cc/54cc), Piston Pin Diameter: 12mm / 0.47". 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 carburetor, also compare the intake diameter, outlet diameter, flange/bolt spacing, choke type, throttle-cable connection, fuel/vacuum ports, and engine displacement.
What models or situations does this part not fit?
Do not order this carburetor for machines outside the listed compatibility, or for units with different intake sizes, cable/choke styles, flange spacing, jetting requirements, or fuel/vacuum port layouts. 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 intake diameter, outlet diameter, flange/bolt spacing, choke type, throttle-cable connection, fuel/vacuum ports, and engine displacement. Recheck listed specs such as 44mm Bore / 12mm Pin, Cylinder Bore: 44mm (Upgrades engine to 53cc/54cc), Piston Pin Diameter: 12mm / 0.47". If any connector, mounting point, size, or year detail is different, confirm fitment before installation.
What can I say. Very nice kit overall and you can feel the difference in performance over the stock engine. I had to add a base cylinder gasket though because the piston was hitting the cylinder head. I wish they would have provided a throttle cable for the carburetor because my stock one would not fit so be prepared. All in all, 100% satisfied!!
I put this kit on a 50cc 2 stroke motor I bought off Amazon and you can tell a big difference. Only suggestion is to make sure not to over tighten the carb intake flange bolt it will snap. Youtube how to install the kit. Really simple once you dive into it
The dellorto clone carb WILL BREAK!! Might last a week, might last an hour. But, it will break. Head kit is awesome, though.
fast delivery
Not mad at all.