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Discussion Starter · #1 ·
i want to get houser extended a-arms for the xx but what shock size will i need, their is a kit thats 1700 bucks but i though i could get the a-arms and brake lines new and then buy used shocks, so what is the shock size eye to eye
 

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Eye to eye length is not the only thing to worry about, you also have to be concerend with shaft travel. Best bet would be to call Houser direct and get the shock specs from them.
 

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They are shorter like 18.25. Check Houser's web site in the discription they say what size shocks needed.
 

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ya that is what I have the Laeger
 

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Discussion Starter · #8 ·
Long Travel Shock Required - Free Length: 18.125 in, Stroke: 5.875 in, 23 in Tires


does this mean eye to eye 18.125 ? does this also mean i need a 23" tires for this set up or could i still use 21 or 2's
 

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Shock "free" length & "compressed length is very important. I think that we have a video on our web site houser-racing.com that shows how to get this.
First determine the "compressed" length. This is where the ATV will be when it bottoms out.

PUT THE WHEELS & TIRES on that you will be using. Changing tire diameter by 2" changes all this below by 1"! Very important.

Find Compressed Length.
Take shocks off ATV. Let the ATV sit 1.5" off the floor. Most people put 2x4 flat under the frame. On a big jumps, at least for MX racing, the ground will flatten the bottom of the tires by 1.5" & the frame will drag the ground at this point. Measure eye to eye distance. This is your compressed length. Do you see how tire diameter would change this? If you put 2" larger diameter tires on, the ATV sits higher 1"

Find Free Length
If you want 10.5" of wheel travel, that is what is used for MX & can change math for your desired wheel travel, add that distance to the distance under the frame; 1.5" + 10.5" = 12" under the frame. Measure eye to eye & this is your free length.

For the pros, they always get their shocks made after this exercise.

The pros may fine tune this alittle. In XC we have found that the guys do better when the rear end of the quad can go compressed with .5" under the frame & then they use 11" to 11.5" of rear wheel travel.

Hope this helps.
John Houser
Houser Racing
 

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i would like to get a set of longer a-arms but worry it would limit me in the trails, some places i ride have poles at the trail start that limits what size bikes go on the trail. keeps the big 4 wheel drives out from rutting em up
 
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