Will this 44mm Big Bore Cylinder Kit fit my Chinese 2-stroke 49cc pocket bike?

Yes, this GOOFIT 44mm Big Bore Cylinder Kit is designed to fit most Chinese 2-stroke 47cc and 49cc engines, so it should be compatible with your pocket bike. Just double-check your engine specs to be sure.

Will installing this kit really make my bike faster?

Absolutely! Upgrading to this 44mm cylinder increases your engine size to 53cc-54cc, which boosts power by 2-3 horsepower. You'll notice better torque, quicker acceleration, and overall improved responsiveness.

Is it hard to install the kit myself?

Not at all. This kit is made for a direct fit, meaning it matches your engine perfectly and comes with all the necessary parts. If you have basic mechanical skills and tools, you can handle the installation without much hassle.

Does the kit include a reed valve? Because I heard some reviews mention it missing.

This particular kit focuses on the cylinder, piston, and associated top-end parts and does not include a reed valve. If your setup requires a reed valve replacement, you'll need to purchase that separately.

How durable is this cylinder? Will it last through heavy use?

The cylinder features a hardened coated alloy and anti-corrosion treatment, which significantly reduces wear and friction. Customers have praised its long-lasting performance even under demanding riding conditions.

1 5

GOOFIT

44mm Big Bore Cylinder Kit (53cc-54cc Upgrade) for 2-Stroke 47cc 49cc Pocket Bike ATV

7 total reviews

$74.99

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Product Overview

Unlock the full potential of your mini ride with the GOOFIT 44mm Big Bore Top-End Kit. Designed as a high-performance upgrade for standard Chinese 47cc/49cc 2-stroke engines, this kit increases displacement to 53cc-54cc, delivering an impressive 2hp - 3hp boost. Whether you are racing or off-roading, this precision-engineered kit provides the extra torque and acceleration needed to dominate the track.

Product Compatibility

This is a Performance Upgrade Part for 2-stroke small engines. It converts standard 47cc/49cc motors into high-output 53cc/54cc powerhouses.

Vehicle Category	Compatibility	Performance Gain
Pocket Bikes	Chinese 47cc / 49cc Super Bikes	+2hp to 3hp Boost
Mini Quads / ATV	43cc-50cc Kids ATVs & Quads	Enhanced Low-end Torque
Mini Dirt Bikes	47cc / 49cc Pit Bikes	Faster Acceleration

Specifications

Attribute	Details
Cylinder Bore	44mm / 1.73" (Big Bore)
Piston Pin Length	37mm / 1.46"
Effective Displacement	53cc - 54cc
Engine Type	2-Stroke Air-Cooled
Material	Hardened Coated Alloy & High-Strength Steel

Key Features

Instant Power Upgrade: Specifically engineered to boost your regular engine's output by 2hp - 3hp, providing a significant increase in both top speed and climbing power.
Precision Hardened Coating: The cylinder inner walls feature a specialized hardening treatment and anti-corrosion coating, ensuring stable performance during sustained high-speed operation.
High-Compression Piston: Paired with a high-strength forged piston that reduces friction and vibration, maximizing energy transfer and engine responsiveness.
Superior Gas Sealing: Precision-manufactured components eliminate air leaks and ensure exceptional sealing, keeping your engine running at peak efficiency for years.
Direct Performance Fit: Designed as a top-end replacement for most Chinese-made 2-stroke 47cc/49cc engines, making professional-grade tuning accessible for DIY enthusiasts.

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44mm Big Bore Cylinder Kit (53cc-54cc Upgrade) for 2-Stroke 47cc 49cc Pocket Bike ATV