Dirt Bike Forks
Image by Nandu Vasudevan from Pixabay

Dirt Bike Forks

Do you have a leaky fork on your dirt bike, slowly spewing oil down to the wheel and floor? Before you spend hundreds by getting your forks rebuilt, we highly recommend you give the Seal Mate from Motion Pro a shot. We did and it fixed our leaky MX bike’s fork in just minutes.

With full-length dust covers going away on MX dirt bike forks in the ‘80s, some say it made modern front fork suspension more vulnerable to the elements. The funny rubber accordion dust covers were replaced by sexy small ones on inverted forks (a.k.a. USD or upside-down forks).

As with all little sexy things, these new inverted forks need extra attention. Even with the regular hose down, enough dirt accumulated on our RM250s front forks. We’ve been riding on some dusty trails lately, trying to keep up with Off-Road.com Editor Josh Burns.

At first we thought it might be a bad fork oil seal, and that the forks would need to be rebuilt. After some research and learning about Seal Mate, there was a good chance that dirt and grime was keeping the oil seal from properly sealing on the fork tube.

Before taking the front half of the bike apart, we decided to give the Seal Mate a shot. At for the Seal Mate tool, you can’t go wrong to give it a shot. A fork rebuild will run you in the hundreds at any reputable motorcycle shop.

Here is an overview of the process:

Since our RM250 is over 10 years old, we decided to only remove the spring ring off the dust seal to gain access to the oil seal. We weren’t sure if the old dust seals would come off without tearing. If you can, it is better to remove the dust seal, as it will give you better access to cleaning and servicing the oil seal. The alternate worked for us.


Just a few minutes of cleaning and re-seating the oil seal made our dirt bike good as new. No more fork oil leak.

We highly recommend this product to anyone experiencing a leaky fork. It works on dirt bikes and other motorcycles with inverted forks. It’s worth every penny and well worth a try before rebuilding your suspension forks. It’s the easiest and fastest way to get back on the saddle.



Source: www.off-road.com

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