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Keep in mind！
- The clutch starts to work at about 2100 revolutions. The maximum torque of the clutch is 6N at 3600 revolutions. The clutch can only be installed on the flat shaft. The size is 16mm 19.05mm 20mm 25.4mm. The working principle of this clutch is by inputting 2000 When the rotating speed reaches the centrifugal block, it drives the pinion to transmit torque. The output force is the maximum at 3600 rpm. During the design and trial of this clutch, it is strictly prohibited for the clutch to slip. The clutch has failed. A prerequisite for avoiding clutch slippage, the reduction ratio must be designed when refitting.
- Oiling the clutch is extremely important. If heat damage occurs, the clutch will never disengage and the machine will start taking off by itself as soon as you start the engine. This is very dangerous! You can see heat damage inside the clutch drum, the metal turns from black to a blue color.
Specification:
- Two set screws are included
- 1inch Bore
- 14 Tooth
- for 40/41/420 Chain
Fits:
- Mini Bikes and Go Karts
- Other applications
- for 40/41/420 Chain Go Kart Engine
Package includes: 1 x Go Kart Clutch
Description:
- Centrifugal clutch 1" bore 14 tooth design.
- Suitable for 40-41-420 roller chain- up to 13hp horsepower.
- Engaging speed up to be 2300 RPM.
- High impact,wear resistant that is super durable.
- User-friendly controls for easy starting and operation.
- Shaft Bore: 1"
- Accommodates: #40/41/420 Chain
- Tooth: 14
The importance of oiling:
- Oiling the clutch is extremely important. If heat damage occurs, the clutch will never disengage and the machine will start taking off by itself as soon as you start the engine. This is very dangerous! You can see heat damage inside the clutch drum, the metal turns from black to a blue color.
Note:
- The Centrifugal Clutch 1" needs be oiled before use.
- Before ordering please check your crankshaft size.
- Don't put oil inside the clutch holes: The holes on the drum are to let the hot air out of the clutch. DO NOT SQUIRT OIL IN THESE HOLES. When oil gets in the drum portion of the clutch it will cause excessive slippage, which means undue heat will be generated.
Vanord F.
August 30, 2025
Liked everything about this product. Used on a Duromax xp18hp that was installed and not yet complete ,mini bike build
larry w. brown sr.
August 18, 2025
a go cart
Ezra
August 18, 2025
i put this on my 400cc go kart and this clutch is rated for the hp and rpm output of the engine but yet in the end when installing it all it did was slip out and burn until it started smoking. Very disappointed and if you are having the same problem as me where the clutch is slipped just buy a heavy duty clutch or torque converter
OKEY
June 3, 2025
Clutch for 420 engine with a 1 inch shaft Fit perfect on my 420 Duro Max and predator
Danny S.
May 20, 2025
Liked the price, it's cheap you get what you pay for
Trent hollifield
February 18, 2025
I have it on a good size mini bike frame and with a gx390 and it has been great I will be buying more
Chadd Gomez
February 13, 2025
Value for the money
Dutch
January 1, 2025
I put the clutch on and it stopped working within 35 minutes of use
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