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Swallows Racing Stage 3 package for Jaguar XKR X100 4.2ltr - sr00346


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.

Our stage 3 package is designed to replace the rest of the restrictive elements in the exhaust system, this comes in the form of high flow sports cats to match the centre section in stage 2. Our system is then mapped to the non restrictive new elements meaning improved breathing and noise, power gains for this stage are between 70-75bhp.


Our Swallows Racing stage 3 package for the XKR X100 4.2ltr increases the BHP and Torque of your Jaguar while improving throttle response and mid range power.

Our Stage 3 pack consists of -

-K&N filter

The original high cotton air filter available by K&N reduces air filter restriction allowing and engine to breath easier than the factory fitted paper air filter.

-Swallows Racing developed supercharger pulley

The reduction in size of the upper supercharger pulley works on the same effect as a cycle chain pulley and by reducing the size the faster the smaller pulley spins creating more boost pressure, we have developed the optimum pulley size for the perfect road package.

-Swallows Racing Red Remap

Remapping is a software change where we modify the operating parameters in the vehicle engine ECU to unlock the full potential from the modifications fitted.

-Swallows Racing stainless steel Exhaust X section

By removing the most restrictive part of the cat back exhaust system with a non silenced section the amount of exhaust gasses able to be expelled from the engine increases, a sporty rumble is also gained from the exhaust note (Rear silencers can be added if you require, please contact us for this option).

-Swallows Racing Sports Cats

The most restrictive part of a modern engine are the catalytic converters, these high cell items block the exhaust gasses from getting out of the engine in order to clean the gasses thoroughly, our 200 cell sports cats are less restrictive and let the engine breath while keeping to emissions standards of MOT regulations.

-Axle back exhaust system

Keeping the pipe diameter of the centre section through to the tips, the un silenced rear boxes completely frees up the flow of the system ensuring ultimate performance and an ultimate Jaguar roar. 

By increasing the 3 major elements of the engine (Breathing, Boost pressure,and Mapping) we can allow more fuel and air to enter the intake and exhaust gasses to expel quicker, this takes the cars performance from 400bhp to 475bhp* which transforms the car and makes for a more exciting and enjoyable drive.

*All power figures are based on previous dyno development and may vary between models.

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