My son's V8 ride again.
Ouxi V8 / C80 Tunable Controller 21A (Black Motor Plug)




Ordered before 23:59, delivered tomorrow
Motor plug colour: Black
- Tested on a fatbike before shipping
- Easy to install
- Home delivery across the EU
- Not happy? Money back, 14-day cooling-off period
- Fits: V8, C80
Step by step How do I check my motor plug colour?
How to check which motor plug colour your fatbike has
All you need is a pair of wire cutters and it takes a minute. The colour is on the inside of the motor plug, so you'll need to pull it apart. That's fine: it won't damage the plug.
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Go to the rear wheel
Put your fatbike on its stand. The motor is in the rear wheel, and one thick cable comes out of it: the motor cable.
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Follow the motor cable to the plug
The motor cable runs along the frame to the first plug. It's usually held in place with two cable ties. Cut the first one.
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Cut the second cable tie too
Now the plug hangs free and you can get a good grip on it.
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Hold the plug on both sides
Hold it by the thick plug housings, not by the thin wires.
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Pull the plug firmly apart
It's a tight fit, so don't be afraid to pull hard. The plug won't break.
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Look at the inside
Where the pins stick out you'll see the colour: red or black. That's your motor plug colour.
This controller only fits if the inside of your fatbike's motor plug is this colour. Not sure? You can check it in 1 minute.
Frequently bought together

Customer Reviews
On our own yard it goes nicely. My question was answered quickly. Great service.
Second one I've ordered here, fine shop.
Same plugs as the original, I can recomend it.
At the campsite the C80 rides fine now. I got a proper reply to my email.
Connecting it was done in no time, clear information on the site.
The controller was well packed. Arrived neatly.
Fits perfectly, didn't have to do a thing. Neat handling.
Tucked away neatly in the frame. The delivery went fine.
The V8 starts up normally again, my wife is happy with it.
On private land it does fine. The reply to my email took a while.
Product information
The benefits at a glance
- Tunable up to 50 km/h
- Restricted: 6 km/h throttle
- 5 cables, with alarm
- Suitable for: Ouxi V8 and Ouxi C80 with black motor cable
- Version: 21A, 500W, black motor plug, 5 connection cables with alarm
- Speed: up to 50 km/h tuned (private terrain), standard 25 km/h
The black-plug version of the tunable V8/C80 controller. Ouxi supplied the V8 and C80 with two types of motor connection; if your bike has the black plug, this is the model that fits. Together with a tunable HC80 display with killswitch you set the speed up to 50 km/h.
The red and the black plug are not interchangeable, so first take a look at the motor cable; the Colour Check tells you how. After that it is five plugs to unclip and clip back on under the saddle. Keep the tuned V8 off public roads; there the limit is 25 km/h. Riding tuned is only allowed on private or closed-off terrain.
Installing a new controller is actually very simple: there are only 5 cables you need to connect. Still can't get it to work? Feel free to message us via WhatsApp at 06 82090642, and we'll help you out quickly.
Pro-tip: first remove the saddle from the bike, that way you can easily access the controller to replace it.
WhatsApp chat only. We can't take calls, not even via WhatsApp.
Important: this controller only works with the V8 and C80, and only in combination with a black motor cable. Do you have a different fatbike model? Then you need a controller that matches it. You can find the correct controller for your model on our site.
Difference between restricted and tunable: it is in the software, not in the number of amps.





