Overkill Performance UK

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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.

Check out these VSRacing 88/103 mm Pro Turbos! 🔥These are going on a six-second street car Chevy with a big-block 8.8-li...
26/10/2026

Check out these VSRacing 88/103 mm Pro Turbos! 🔥

These are going on a six-second street car Chevy with a big-block 8.8-litre engine! Each of these turbos is capable of producing 2,300 bhp. We can’t wait to see the quarter-mile times this Chevy achieves with these fitted!

If you’re looking for a turbo or turbo kit for your car, please get in touch to discuss your options.

25/10/2026

How well has the E30 M3 aged! 😍

We’ve just finished fabricating a fully custom exhaust for this stunning E30. The values of these cars have also skyrocketed! Can any of our followers remember when these were new? Let us know in the comments below!

21/10/2026

This S4 sounds crazy! 🔥

We’ve fabricated a manifold-back-valved system for this supercharged V6 Audi S4 Avant! The car also has long-tube headers, meaning it’s super loud. Thankfully, the valves make a considerable difference when they’re closed.

Is this the perfect all-in-one car? Plenty of space for everyday use, but with the touch of a button, it also becomes an animal!

We’ve just made this K-series T4 twin-scroll sidewinder turbo manifold for Ignite Automotive and their insane Honda Civi...
19/10/2026

We’ve just made this K-series T4 twin-scroll sidewinder turbo manifold for Ignite Automotive and their insane Honda Civic build!

We’ve also added Turbosmart 45 wastegates to go with it.

It’s a very exciting project that Ignite Automotive have taken on, and once it’s complete, it’s going to be crazy fast! Follow them for updates!

18/10/2026

This Golf R came to us for a fully custom, valved exhaust system, complete with our hybrid downpipe!

This setup retains the original catalytic converter whilst replacing the GPF section with a 3-inch replacement pipe. Not only will this make the car sound much better, but it will also allow the engine to breathe more freely.

The car will require at least a Stage 1 remap to run properly without the GPF in place.

Get in touch if you have a Golf R and want the same package!

Another manifold completed for an S55!This S55 T4 twin-scroll, top-mounted turbo manifold has just been finished and is ...
13/10/2026

Another manifold completed for an S55!

This S55 T4 twin-scroll, top-mounted turbo manifold has just been finished and is ready to be shipped out for fitting.

We've built a wide range of custom manifolds for the B58, S55 and S58 engines. If you're looking for a custom manifold, get in touch!

11/10/2026

We’ve built a custom valved exhaust system for this 991 GT3! These GT3s sound amazing from the factory, but we think we’ve taken it to another level, with the added option of closing the valves for a quieter drive.

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A bit of a throwback to when we made Sri a custom cat-back valved exhaust system for his stunning 992 Carrera 4 GTS!This...
08/10/2026

A bit of a throwback to when we made Sri a custom cat-back valved exhaust system for his stunning 992 Carrera 4 GTS!

This exhaust is a bit hidden behind the back of the bumper, so here are some photos of it with the bumper removed.

It has greatly improved the sound of this turbocharged 911, with the option to make it quiet at the flip of a switch.

If you have a 992 and want more noise, get in touch to get booked in!

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06/10/2026

How good does this R34 GTR look! 😍

The owner of this car wanted a bit more noise from his GTR, so we made a custom cat-back exhaust system.

We haven’t made the car too loud, but it’s definitely a big step up from what it was before! As you can probably tell, this GTR is in unbelievable condition underneath as well as on top, making this a tasteful modification that complements the car perfectly.

If you have an R34 GTR, or any GTR, get in touch for a custom exhaust system!

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

Website

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