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Swallows Racing/ Quantum Zero. Coilovers XKR X100 - srq006


All Swallows Racing products utilise over 35 years experience in motorsport and are extensively tested on and of the track to ensure the maximum performance for you car with proven results.

You want the best but you don't need external adjustment. Perhaps the rules say you have to use a non-adjustable damper. The gas-pressurized monotube shock absorber built according to your exact requirements.
Zero has no external adjustment—but that doesn’t mean it’s not adjustable. Inside you’ll find a replaceable bleed jet and a pair of shim stacks—all of which can be tuned to deliver the performance you’re looking for.



Quantum Zero is a range of monotube shock absorbers. No matter which vehicle or how many ways of adjustment, every Zero shock absorber shares the same basic architecture and many of the same components.

Throwing Shapes

A range of pistons allow the shape of the damping curve to be easily tuned. Linear. Digressive. Find your winning formula.

Infinitely Adjustable

Zero shock absorbers are available with up to two ways of external damping adjustment—and all can be opened by a competent individual and re-valved or re-jetted internally.

Gas Pressurised

Zero shock absorbers are gas pressurized. The gas and oil are kept separate using a floating piston. This ensures consistent performance with the shock absorber in any orientation.


Replaceable bleed jet.


Independently adjustable compression and rebound shim stacks.

Piston Linear and digressive variants available.

Warranty Options

In order to provide continuing peace of mind and support throughout the life of your Jaguar, we offer extended warranty packages to compliment our standard 3 month mechanical warranty.

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If you would prefer to purchase over the phone Call +44 (0)1934 750 319