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40 Series Torque Converter Kit Go Kart Torque Converter with Driver Clutch for Predator 420CC Clutch Pulley Fit for 9-16HP Engines with 1' Straight Crankshaft and 1/4' Keyway GX 390

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$107.99

$ 45 .99 $45.99

In Stock
  • Safe to Use: The torque converter has built-in overload protection and multiple heat dissipation holes on the cover, ensuring safe and stable operation even in complex road conditions.
  • Strong Adaptability: The torque converter is suitable for engine types of 8-16HP, ensuring efficient operation on diverse engines. Whether it is ATV, large tricycle, or light off-road vehicle, torque converter can be ideally matched.
  • Power Assistant: The asymmetric design of the driver pulley and driven pulley can reduce engine load. By optimizing torque transmission through this converter, greater torque output can be obtained at lower speeds, enhancing engine power.
  • Built to Last: Its driver pulley and driven pulley are made of iron and aluminum, which are wear-resistant and have fast heat dissipation. Its belt has excellent elasticity and good extensibility, which can extend its service life.
  • Comfortable Experience: The 40 series torque converter adopts advanced design principles to ensure a smoother shifting process and reduce jerkiness during shifting, greatly enhancing the rider's overall riding experience.



Product Description

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Description

The torque converter set for 8 to 16HP engines ensures excellent power transmission efficiency, giving the engine ample vitality. With its advanced power transmission technology, this 40 series torque converter can achieve smooth and powerful operating performance under changing road conditions, improving the overall responsiveness of the system while ensuring stability and efficiency of operation, and bringing you an unparalleled riding experience.

1

Safe to Use

The torque converter has built-in overload protection and multiple heat dissipation holes on the cover, ensuring safe and stable operation even in complex road conditions.

2

Strong Adaptability

The torque converter is suitable for engine types of 8-16HP, ensuring efficient operation on diverse engines. Whether it is ATV, large tricycle, or light off-road vehicle, 40 series torque converter can be ideally matched.

3

Power Assistant

The asymmetric design of the driver pulley and driven pulley can reduce engine load. By optimizing torque transmission through this converter, greater torque output can be obtained at lower speeds, enhancing engine power.

1

Built to Last

Its driver pulley and driven pulley are made of iron and aluminum, which are wear-resistant and have fast heat dissipation. Its belt has excellent elasticity and good extensibility, which can extend its service life.

2

Comfortable Experience

The 40 series torque converter adopts advanced design principles to ensure a smoother shifting process and reduce jerkiness during shifting, greatly enhancing the rider's overall riding experience.

3

Easy to Clean

Due to its simple structure and smooth surface, you can easily wipe off stains on torque converter with a wet cloth, which is convenient and effortless.

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Package Included
  • 1x 3/4" Driver Pulley
  • 1x 5/8" Driven Pulley
  • 1x Plastic Cover
  • 1x Driven Belt
  • 1x Mounting Plate
  • Other Accessories for Installation
Notes

1. Please check if all screws are properly installed and tightened before use.

2. Please allow the slight color difference caused by the shooting light and 1-3cm error due to manual measurement, and make sure you do not mind before ordering.

Application

The 40 series torque converter is suitable for ATVs, large tricycles, light off-road vehicles, go-karts, motorcycles, mini helicopters, etc.

Details

Precise Pulley Bore: Its precise bore size can be closely matched with other transmission components to improve transmission efficiency.

Round Edges: The edges of the cover adopt a round design, which is not sharp and greatly reduces the risk of accidental injury to others.

specification

Material Iron, Aluminum, Plastic
Color Black, Silver
Installation Place On the Engine
Belt Type 203785
Sprocket Teeth 10T for #40/41 420 Chain, 12T for #35 Chain (Chain is not included)
Engagement Range 2350±200rpm
Recommended Engine 8-16HP
Driver Pulley Shaft 3/4" (Bore); 20mm/0.79in
Driven Pulley Shaft 5/8" (Bore); 19mm/0.75in
Crank-Pully Distance 211mm/8.3in
Transmission Drive Shaft Dia 2.54cm/1in
Total Diameter of Clutch 25.4mm/1in
Driver Pulley Diameter 13.5cm/5.3in
Driven Pulley Diameter 20.5cm/8.1in
Belt Size 2x1cm/0.8x0.4in (HxW)
Product Height 15.5cm/6.1in (Without Cover)

Raulee Palm
2025-07-04 18:45:39
The belt that came with it is to tight and spins as soon as the engine fires up. I needed to get a bigger belt but that’s slightly to big. It works better than the one that came with it. Then paying for shipping on top if the price wasn’t worth it
Azzaro Surfaces
2024-12-16 15:04:57
The kit came with all the necessary parts and installation instructions. Although I am mechanically inclined, I consulted a professional mechanic during the process to make sure everything was installed correctly. The compatibility of the kit is excellent, not only for 9-16 horsepower engines, but also adapts to a wide range of kart frames. I made some minor adjustments to my kart to accommodate the new torque converter, but overall the compatibility was very satisfactory.
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