Overkill Performance UK

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!

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.

#991

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!

#992

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!

04/10/2026

04/10/2026

A few photos from last Monday at Santa Pod Raceway testing the drag car! If you have any photos of the car at Santa Pod, do send them our way! 🔥

This is what Overkill Performance is all about, going fast, reliably and consistently! If you’re after a turbo kit, do get in touch to discuss your options!

01/10/2026

How good does this Camaro sound? 🔊😍

We’ve just completed a full valved exhaust system on this supercharged V8. Not only does it sound incredible from the back, but the induction noise from the front is insane too! 🔥

Get in touch to have a full system made for your muscle car!

29/09/2026

What a great day testing our new setup on the drag car at Santa Pod yesterday! We made a few tweaks and we’re very happy with the results. A huge thank you to our team and everyone who came along and supported us. 👏

Who knows? The next time this car hits the track, it might be running a completely different turbo setup! 👀

It was also great to see so many of our customers testing at Santa Pod yesterday with the turbo kits and exhausts we’ve built for them! Everyone looked unbelievably fast and put down some brilliant 1/4-mile times.