Overkill Performance UK

Overkill Performance UK Specialists in high performance vehicles and modifications. We are offer excellent custom fabrication of exhausts, to complete engine rebuilds and repairs.

With over 15 years of experience we know where to find and make more power.

03/09/2026

We fabricated a custom sports downpipe for this big power RS3!

This car has previously been in for one of our full cat back systems, and now we’ve completed the downpipe too. This should help the car breathe more freely and unleash even more of that unmistakable DAZA soundtrack!

Get in touch if you want an exhaust system for your RS3!

Something we don't usually get in the workshop!This is an absolutely stunning V12 Jaguar E-Type that came in to us for s...
01/09/2026

Something we don't usually get in the workshop!

This is an absolutely stunning V12 Jaguar E-Type that came in to us for smaller centre silencers. This has managed to improve the sound quality and volume of this V12, without making it too loud or droney!

The car has now left us to have a few other bits completed, including some interior work and bodywork. Once these bits are finished, it will be ready for the owner to drive and enjoy.

30/08/2026

We had previously fitted a full exhaust system to this Seat Leon Cupra. However, after a bit of use, the owner found it to be a little too loud.

To solve this, we have fabricated and fitted two silencers to reduce the volume slightly. The tone is still there and the car is still loud, but it is now at the perfect level for everyday use!

27/08/2026

How good does this drag car look now the body is on! 😍

We’ve now completed fabrication of this compound turbo kit for this insane drag car! The kit has been fabricated from titanium to help save weight. With drag cars, every bit of weight matters, so using titanium will help improve both times and performance.

We’ve built this compound turbo setup around a Precision 6870 and a Precision Pro Mod turbocharger! 🔥

We’ve just finished fabricating this titanium exhaust system for this G81 M3! 😍Titanium is a great material if you’re af...
25/08/2026

We’ve just finished fabricating this titanium exhaust system for this G81 M3! 😍

Titanium is a great material if you’re after a super-lightweight exhaust system. It’s incredibly strong and, over time and through repeated heat cycles, the titanium itself will change colour, developing blue, purple and bronze tones. 🔥

Get in touch for a quote on a custom-made titanium exhaust system for your car!

Have you got a Golf R, Cupra or S3 fitted with a GPF? If you’re looking to improve the sound and flow without removing t...
17/08/2026

Have you got a Golf R, Cupra or S3 fitted with a GPF? If you’re looking to improve the sound and flow without removing the OEM catalytic converter, we’ve got a solution.

We’ve developed our hybrid downpipe, designed specifically for GPF equipped models. These retain the original OEM cat while replacing the restrictive GPF section with a 3 inch replacement pipe.

The result? Better exhaust flow, a slight increase in performance and, most importantly, a much better exhaust note, bringing back the sound you would expect from a pre GPF model.

Because the original road legal catalytic converter remains in place, this setup is more likely to pass an MOT compared with a full decat setup.

A Stage 1 map is required to remove the GPF related fault codes and allow the car to run correctly with the GPF removed.

Got a GPF equipped Golf R, Cupra or S3? We can make it sound better, flow better and perform better than it does now.

Get in touch to find out more.

16/08/2026

A great improvement from stock on this Range Rover P400 HSE! 🔊

The customer really likes the car but wanted a little bit more noise without it being over the top. The solution? A cat-back valved exhaust system!

This allows the owner to choose between loud and quiet, giving them the best of both worlds.

Get in touch for a custom exhaust system!

An intercooler is a crucial piece of the puzzle when it comes to making power from a turbocharged car!A high-performance...
13/08/2026

An intercooler is a crucial piece of the puzzle when it comes to making power from a turbocharged car!

A high-performance intercooler efficiently cools the compressed air coming from your turbocharger before it reaches the intake manifold. Cooling the compressed air increases its density, allowing more oxygen to enter the cylinders. This can help the engine produce more power, while also reducing the risk of knock and helping to maintain consistent performance.

We fabricate intercoolers in-house! Get in touch to order your custom intercooler.

Address

Mount Mill Farm
Milton Keynes
MK196DG

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm
Saturday 9am - 1pm

Telephone

+441908382899

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