Sean Colliers KX500 Project "I was only going to inspect the top end"

USMC 500 · Post by **USMC 500** » Thu Oct 13, 2016 2:16 am

I can't begin to express how impressed and motivated I am by the efforts of both Mike and Jason. When I sent this motor to our shop in Oregon I knew that they were going to find some negative surprises inside. The fact that they have taken chicken $h1t and made chicken soup is a testament to the quality of work performed at KX Guru Racing. I will be delivering this bike to Sean along with a slideshow of the before and after photos. Kudo's to the entire KX Guru Racing team for all their efforts in getting this bike done

Post by **Sandblaster** » Thu Oct 13, 2016 3:15 am

Here's a short vid of Jason doing some assembly work..

https://www.youtube.com/watch?v=qJCUaA_eMt8

Post by **Sandblaster** » Thu Oct 13, 2016 6:53 pm

On to the shock.
This shock was specially built by Enzo for Sean.
The way that Sean rides however, he has more rubber on the bottom of the rear fender then he does on the rear tire

So, after discussing our options we sent the shock to Alex Ward at Crazy Al's Racing for a rebuild.

: KX GURU RACING SEAN COLLIER KX500 223.JPG (44.73 KiB) Viewed 9394 times

Post by **Sandblaster** » Thu Oct 13, 2016 6:59 pm

I won't go into full detail on what all was found, I'll let Alex do that

But here is a brief description.
The body, clevis, rod, and bladder, were stock KX500
The custom valving that Enzo used was a Stock KX450F valve.
That's right, the KX450F valve fits right into the KX500 body and on the stock shaft.
Does it really gain you anything?
That's to be determined.
Then Enzo added a bunch of shims.
Alex has the details on the shim count, thickness, and diameters.
However, Alex has a better way to go.

: 1475790474692_0830752534_2c3e9e66.jpg (75.15 KiB) Viewed 9393 times

That's right, Pro Action makes a nice replacement valve and custom shim stack for the KX500.
After Sean rides the Beast with this new set up we will let you know what he thinks.

Post by **Sandblaster** » Thu Oct 13, 2016 7:01 pm

By the way, Alex donated all the parts and labor for this build...
THANK YOU ALEX!!!!!!!
Here is some pics of the old and the new for your viewing pleasure..