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This guide will help you choose the right clutch kit for your CFMOTO ATV.
ATV manufacturers calibrate their standard clutches for general use and for the factory-fitted stock tires. In general use they work reasonably well, but when you want to tailor the ATV for a specific purpose, the drivetrain can easily be adjusted to suit with a clutch kit.
At the bottom of the page you'll find a chart to help you choose the right kit based on your CFMOTO model, intended use, and tire size.
On the other hand, manufacturers try to build ATVs that are "okay everywhere." That also means the base machine isn't outstanding in any particular use or in challenging terrain.
If you want to improve your ATV's performance and driveability, that's easy to do with a Vauhti Varikko clutch kit.
Kits improve efficiency, meaning power is transferred from the engine to the wheels more effectively. Gear ratios can also be changed, or the CVT (variator) improved, so that drive is optimal at every speed and rpm range.
If you increase your tire size by 2" or more over stock, installing a clutch kit is highly recommended.
Kits can be used to correct the change in gearing. Larger tires have a considerably longer rolling circumference than stock tires. That changes the gearing, and the stock transmission (variator) no longer works correctly.
Big-lug mud tires are heavy, which increases rotating mass. On top of that, their rolling resistance in soft terrain is far greater than with stock tires.
Increased rolling resistance and weight are poison for a stock clutch. But with a clutch kit, you can fix the situation and save the belt when things get tight!
Model-specific clutch kits are designed for different uses and different tire sizes.
Here's some guidance and tips to help you choose the right kit for your use:
The most popular and best choice for versatile use.
If you're not sure which kit you want, or simply want to get the most potential out of your ATV, choose TRAIL & WORK.
True to its name, it works excellently on trails, in the terrain, in work use, and in general use. The ATV's handling changes noticeably, belt durability improves, and power is transferred more efficiently from the engine to the wheels.
Works well with stock-size tires and up to 2" larger.
Key features
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+When you increase tire size more than 2" over stock, we recommend the MUD & BIG TIRE kit.
The same kit also works well with coarser off-road tires in muddy and soft terrain.
So when tire size increases, rolling resistance goes up, and you ride a lot in soft terrain, choose this clutch kit.
Key features:
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+When nothing else is enough!
Now we're really in the deep end. The most impossible terrain gets conquered with the SKEG MÖNSTER or MUD+ kit.
You get explosive acceleration, and at the same time the front end lightens up noticeably.
When you enjoy demanding conditions, or simply want a serious boost in acceleration, this is the right choice.
Worth remembering, though, that top speed (on unrestricted machines) also drops with this kit.
Key features
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If your riding is mostly on roads and long distances, we recommend the ADVENTURE or ROAD clutch kit.
These are designed so that at cruising speed the rpm drops by roughly 500–800 rpm compared to normal.
This naturally reduces fuel consumption and makes riding more comfortable, since the engine doesn't "scream" at such high revs.
These also come in model-specific versions for different tire sizes, so factor that into your choice as well!
Key features
If you're still not sure which kit to choose, contact our customer service!

ATV models
| TRAIL & WORK | MUD & BIG TIRE | SKEG. / MUD Plus | |
| 25-28" tires | 28-30" tires | 30-34" tires | |
| CFORCE 450/520 | 80.5200 | 80.8600 | 80.5300 |
| TERROX 400/500 | 80.5200 | 80.8600 | 80.5300 |
| CFORCE 625 | 80.1300 | 80.5500 | 80.5600 |
| CFORCE 850 GEN2 | 80.1400 | 80.5500 | 80.5600 |
| CFORCE 1000 GEN2 | 80.1500 | 80.5700 | 80.5800 |
| CFORCE 850/1000 GEN3 | 80.9500 (26-29") | 80.9600 (29-34") | |
| TERROX 1000 | 80.9500 (26-29") | 80.9600 (29-34") | |
| CFORCE 850 GEN3 MV | 80.10500 (MUD Plus) |
| TRAIL | MUD & BIG TIRE | ADVENTURE | ADVENTURE BIG TIRE | SKEG. | |
| 25-29" | 30-34" | 29-30" | 31-35" | 30-35" | |
| UFORCE 600 | 80.4200 | 80.6600 | |||
| UFORCE 1000 (XL) | 80.6200 | 80.6300 | 80.6400 | ||
| ZFORCE 950 (XL) | 80.8400 (27-30") | 80.2000 | 80.5900 | ||
| ZFORCE 1000 | 80.8400 (27-30") | 80.2000 | 80.5900 | ||
| U10 PRO (XL) | 80.10200 | 10.10900 | 80.11000 |
E.g. 80.9500 is an order code you can use to find the right kit in our webshop.