2K2 RaceAudi S3, Type 8P, Gen.2

The 2K2 is a ‘high-end’ 2-way system (bump and rebound separately adjustable) shock absorber with springs (also known as ‘coil-over’) for demanding track day and competition use, that is adjustable in height and damping and always comes with an external reservoir. It is modular and, apart from the piston rod, entirely composed of high-quality anodized aluminum with external reservoirs (for the non Macpherson shocks). On average, the 2K2 light-alloy shock absorber is 35% lighter than a comparable steel shock absorber (measured without spring). It is based on the same technology that has helped Schumacher become a World Champion. 

If it involves a Macpherson suspension, the absorber will feature a design with a 45mm Ø (52mm for the XL version) upside down insert. This upside-down design delivers a much higher installation rigidity (less flexibility) to the Macpherson suspension. This higher installation rigidity results in a much better handling and a more direct steering behavior.

Setting
All shock absorbers that Intrax manufactures are custom-built. This means the shock absorbers will only be manufactured once the specific data of the car (tyre type, use of the car, any adjustments made to the car, etc.) and the driver’s wishes are known. Based on these data, the engineers calculate/design the ideal shock absorber, which will then be manufactured.

Adjustable damping
Because of the second knob for the settings and the external reservoir, the 2K2, in comparison with the 1K2, can be adjusted in an even more refined way. For example, the 2K2 allows for an independently adjustable bump (inward stroke of the shock absorber) related to the rebound (outward stroke of the shock absorber). The knob to adjust the bump is located on the external reservoir. The independently adjustable bump and rebound in combination with an external reservoir makes the 2K2 the ideal shock absorber for the demanding competition (track day) driver, who wants to remain in full control.

Thermostat
The 2K2 damper is fitted with an internal thermostat. The thermostat keeps the damping constant at varying temperatures. This means the damping and driving behaviour remain exactly the same at various operating and ambient temperatures.

Large diameters
Where possible, the housing and the external reservoir of the 2K2 shock absorber are made of high-quality aluminum. This guarantees a low weight, maximum strength, optimal cooling and large volumes because of the external reservoir. Whilst designing the 2K2 shock absorber, the largest possible diameter is chosen for an even more accurate damping control; usually a 52mm housing with 46mm piston. Where possible, Macpherson struts are fitted as upside-downs with a 45mm (52mm for the XL version) diameter instead of a thin piston rod that is mounted to the chassis.