Leaking strut is covered by 1-year warranty.
       For extended warranty service to 2 years with extra cost, please contact our sole agent/dealers.
Circuit Master

This is the best design, on the competitive version such as Racing Spec, Drift Spec, Tarmac Rally. This is the ultimate boutique for racing in many international athletics tracks, and test for a long time. This is for purchase handling high performance and the essential partner in different racing. Circuit Master Damper is tested through XYZ racing teams all over the world. 9720 ways of different adjustments can meet all customers’ needs and win the 1st place in every race.


Because its 3 adjustment knobs with small oil hole design, when driving through big bumps, the coilover oil will go through small passage which might cause some small noise. This is normal situation. This product is made for circuit tracks and there will be no concern for bumps on the tracks.

Top design for all types of suspension in the world.
Mono tube design.
Full ride height adjustable.
Not suitable for street use.
One year limited warranty; send back for repair.
External nitrogen reservoirs
With 3 adjustment knob: to adjust the dampening force of
rebound and compression separately is available.
 All applications listed on our website are for 2WD model
unless we specify 4WD.
Aluminum Top Mount (A6061)
Each application comes with pillow ball upper mounts on McPherson suspension, which enables you to experience excellent handling. This cannot compare to the OE one. Most of pillow ball top mount on McPherson strut has camber adjustability.
Mono-tube Design
Mono-tube design is adopted for this suspension system as it can retain stable damping and have varieties of response to the road conditions. This larger piston diameter of 45mm. The shock body 45mm steel (STKMI3C) though precise process to get the highest performance and quality.
9720 Way Damping Settings
With the external nitrogen reservoirs, to adjust the dampening force of rebound and compression separately is available. 9720 ways of different adjustments can meet all customers' needs and win the 1st place in every race.
Coil Spring
The setup of spring rate is designed for Circuit Master Damper of many purposes, such as racing spec, drift spec, and tarmac rally. The spring rate will be perfect due to test thru XYZ racing team all around the world.
Bump Stop
This is making up of high density of polyurethane (PU). This can absorbed the strong impact force and protect the strut. This is different from rubber, the force bearing and bottom impacting is better.
Plug-in Nitrogen Reservoir
The anodized surface treats by lightweight aluminum (A6061), and then produce in second CNC process. This not a cylinders only, also have circulation and heat dissipation to prevent temperature rise.
Double Damping Piston
Main piston is in the strut inside for adsorbing the reaction force from spring, and the other one is in the plug-in nitrogen bottle for assist the impact on the spring.

This style of suspension kits is specifically designed for maximum performance so almost application is equipped with pillow ball upper mounts on McPherson suspension which are able to increase vehicle stability and enable you to experience excellent handling. Most of pillow ball top mount on McPherson struts has camber adjustability. However, the pillow ball top mount might be prone to creating slight amount of noise over big bumps due to performance feature. The basic premise behind all racing shocks is to enhance performance by sacrificing ride quality so road use is not recommended.

The pillowball top mount is able to adjust camber degree and increase stability and handling of your vehicle by 10%. However, the pillowball might be prone to creating slight amount of noise over big bumps, and this does not cover any warranty.
Please answer all questions below and send it back to us, your personal custom coilover kit will be made base on the info provided.
Name :
E-mail address :
Tel :
Vehicle Make :
Model :
Year :
What is your vehicle's horse power?
What is your vehicle's weight? ?Front:
kgs (
lbs), Rear :
kgs (
How's the weather?
A find day
A rainy day
What type of racing event do you participate in?
Gravel Rally
Tarmac Rally
What is your tire camber degree? ?Front:
degree , Rear :
What is your tire toe-in? ?Front:
Rear :
What is your tire toe-out??Front:
Rear :
What is your tire brand? ?
What type of your tires is?
Street tire
Slick tire with lines (soft compound tire)
Racing slick
Rally tire
What is your tire size?
What is your sway bar size? ?Front:?
mm , Rear : ?
Has the off-set of your wheel been modified?
YES, front off-set
, rear off-set
Is there any spacer to be bolted into your wheel?
YES, front
, rear
Does your vehicle have any frame welding?
Designed by ARTWARE
TEL : 886-4-23589111 FAX : 886-4-23589555 © 2013 XYZ AUTO PARTS CO., LTD. All Rights Reserved.
No.16-6, Wenquan Rd., Wuri Dist., Taichung City 41450, Taiwan (R.O.C.)