Carburetor Kit 44mm with Pull Start, Gear Box & Chain | 47cc 49cc 2-Stroke

Complete 44mm Big Bore Performance & Drive Upgrade Kit

Transform your mini bike’s power and reliability. This comprehensive "Big Bore" kit is the ultimate upgrade for 2-stroke 43cc, 47cc, and 49cc engines. It doesn't just improve fuel delivery—it overhauls your entire drive and starting system. Featuring the iconic Red Cylinder Performance Carburetor, this kit is engineered for riders who want more torque, faster starts, and a more durable drivetrain.

The kit includes an upgraded recoil starter with a high-resilience spring and impact-resistant core, solving the common "broken pull start" issue. Additionally, the 7-tooth gear box and 25H chain ensure that your engine's power is transferred to the wheels with maximum efficiency and minimal lag.

Product Compatibility

• Engine Type: 2-Stroke 43cc, 47cc, 49cc
• Vehicle Types: Pocket Dirt Bikes, Mini ATVs, Quads, Mini Motorcycles, and Gas Scooters.
• Fitment: Designed to match original equipment for a perfect "bolt-on" installation.

Key Technical Specifications:

• Carburetor Intake: 19mm (0.75") | Air Filter Mount: 58mm (2.28")
• Recoil Starter: 120mm (4.72") / 80mm (3.14") hole spacing with upgraded resilience springs.
• Gear Box: 25H 7-Teeth (8mm segment spacing).
• Chain: 25H Heavy-Duty 138 Links.
• Mounting Bolt Pitch: 40mm (1.57") and 35mm (1.38").

Why Choose This "Big Bore" Kit?

• High-Performance Intake: The 19mm intake bore allows for significantly higher airflow compared to stock units, resulting in a crisper throttle response and better top-end speed.
• Superior Pull-Start Durability: Features a thickened outer shell and an impact-resistant wheel core, specifically designed to handle the higher compression of big-bore engines without cracking.
• Complete Drive Solution: Includes a matched gear box and 25H chain, ensuring your drive ratio is optimized for the increased power output of the performance carburetor.
• Easy Installation: 100% brand new and precision-manufactured to match factory mounting points exactly.