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Good suspension is no big secret.

1. First, the suspension components must be built correctly for your application.

2. Second, the shocks must be the correct length - both extended and compressed.

3. You shock tuner must have all the information about your quad that is needed.

4. Your shock tuner must know what to do with that information.

5. You must then install and setup the ride height correctly for your needs.

6. Then you are ready to fine tune your suspension.

Several key points with our suspension links are:
>The Sport quads that G T Thunder builds linkages for suffer from leverage ratio curves that are too aggressive, causing a spike in the suspension as the quad gets further down into the suspension travel. This results in a harsh ride when ridden in rough terrain.
>Additional wheel travel by using improved leverage ratios.
>Plusher ride while still maintaining good bottoming resistance by using improved leverage ratio curves.
>Lower center of gravity and ride height for improved cornering stability.
>Improved stability for better over all handling.


Regarding aftermarket shocks:

We do extensive testing both in house and at the track. We test on MX tracks and XC tracks. I also have spent a lot of time riding in the sand dunes. The shock tuning that we do includes setting the extended length, compressed length, valving, and spring rates based on our latest testing. The shocks sent to you from the shock manufacturer may not be set to the specs that we prefer - this is no reason to expect the shock manufacturer to redo your shock for free. I simply custom tune shocks based on our experience for your riding style and preferences. If you feel that you have a warranty issue and want your shocks fine tuned at no charge - feel free to call the manufacturer directly. This is not a service that we offer. We will however furnish detailed shock specifications to shock manufactures, chassis companies, and customers at their request.


Shock Setup


Shock Setup


Note: The information below will on any ATV suspension that has the correct extended shock length with the correct wheel travel. Do not ride your ATV till it has been setup correctly!!!


Please take the time to read through this shock setup sheet and follow instructions to ensure the best possible performance.


1.        Carefully install your suspension components.

2.        Measure your race ride height in the rear.

3.        Set your race ride height in the front.

4.        Measure your rear race sag.

5.        Verify that you have the correct crossover gap in the front.

6.        Measure your front main spring length at race ride height.


1.       Carefully install your suspension components.


Please have a qualified and knowledgeable technician install your components checking for all the correct clearances and that all your suspension components are moving freely.



2.       Measure your race ride height in the rear.


Make sure your quad is race ready with tire pressures set and anything else that will affect the height. Then stand on the foot pegs and have someone measure to the bottom of the frame in the foot peg area.


3.       Set your race ride height in the front.


Now measure your front ride height 22 inches forward of the foot peg area and adjust the front ride height up and down by adjusting the preload on the front shocks till the front is 0 - 1/4 inch higher in the front for most applications. Feel free to contact us for exact settings for your quad.


4.       Measure your race sag.


Place your quad on a stand that is tall enough so that your wheels are suspended off the ground and the rear suspension is fully extended. Now make a mark on the subframe or other suitable place straight up from the axle. Measure from the axle up to the mark. Next set the quad on the ground and stand on the foot pegs and have someone measure from the axle to the mark again. The difference in the 2 measurements is your race sag. We run 4-5 inches depending on the application and the rider. You can make small adjustments to this by turning your preload nut 2-3 turns and you can make large adjustments by install stiffer or softer springs. For best performance you need to have between 1 and 3 turn of preload. NEVER RUN MORE THEN 5 TURNS OF PRELOAD.



5.       Verify that you have the correct crossover gap in the front.


Your crossover gap is the distance between the crossover and what ever it contacts as you move further down in the travel. The gap needs to be checked at race ride height. It needs to be 3/16  - ˝ inch. The smaller the gap the stiffer the ride and the better the cornering. The larger the gap the plusher the ride. The crossover gap can be adjusted by adding or changing crossover spacers.


6.       Measure your front main spring length at race ride height.


Measure the front main spring length at race ride height. On a dual spring setup – 7 – 7 1/8 inches is a good balance of plush ride and good cornering. If the length is less you will need to install stiffer front springs. If it is longer then that you need to install softer front springs.




1.        Feel free to adjust the compression adjusters to your liking but do not run them fully closed as it will cause a harsh sensation and can damage chassis components due to pressure spikes.

2.        We set your rebound for you –PLEASE do not change it .

3.        Shock covers on the front shocks are needed to avoid main seal damage, shaft damage, and crossover sticking.




Shock Covers

Please always run shocks covers on your front shocks to prevent dirt being forced into the front seals

A Arms

Shock and Suspension Parts


Shock Covers - White - To fit most dual rate spring setups in the front - Price is per pair - Part # GT-SC..........................$19.95  

Shock Service

Shock Setup

Suspension Setup

Piston comparison Small 1 copy 072707.jpg (148075 bytes)Piston Photo 072707.jpg (3608869 bytes)

Price - $175.00 per shock.

Our new high flow pistons give us the ability to tune some stock shocks to work better then an aftermarket shock.

More flow equals a greater range of dampening I.E. More plush ride with good bottoming resistance.

The fronts will benefit you in a little less arm fatigue in long races and a little less stress on your frame and front suspension components.

The rear offers noticeably better ride quality.

Highly recommended for the rear.








































































































  All G T Thunder Links have very specific applications. Feel free to email us for any technical data needed to help your shock tuner get the best ride for you when using our rear suspension links.