White Porsche 911 GT3 with an Armytrix exhaust, driving fast along a tree-lined road

Quiet when you want it. Loud when you do.

Armytrix valvetronic exhausts you switch from your phone or the key-fob remote. Delivered across the UK, or fitted by a certified installer in Maidstone, Kent.

Porsche 911 on the ramp at JF Automotive with its exhaust system off

Certified Armytrix installer

Fitted in Maidstone

Your kit goes on at our own workshop, by our own technicians. We set up the valves, the remote and the app, and can remap the car to suit in the same visit.

What our customers say

4.8 from 2,200+ reviews of JF Automotive

  • ★★★★★

    It’s been a bit of a journey (3 years to be exact) in 2023 I had a Quicksilver exhaust system a remap and a reduced top pulley fitted to my 5.0SC L405 Range Rover, last week I finally got around to getting it on the dyno, it’s smoothed out the...

  • ★★★★★

    2022 Mclaren 720s Ceramic Quicksilver Exhaust fitted, Remap, rear springs and new suspension bushes supplied and fitted. This is NOT an easy car to work on….but the service and quality is exceptional. This car was already extremely fast - it is now...

  • ★★★★★

    I was booked in the same day to fit my exhaust! VERY helpful and knowledgeable staff. Great range of upgrades and performance add ons. Very impressed with my service and I will be coming back in the future for sure!

  • ★★★★★

    Peugeot 308 GTI

    Very friendly and welcoming personnel. My Peugeot 308GTI is now a lot more responsive and just right as I don't want to start changing clutches / exhaust etc. Would like to have got dino figures but didn't want my engine revved to its max so i'll...

  • ★★★★★

    Awesome Team, value for money!

    Incredible experience with JFA Automotive! They performed an ECU Stage 1 and TCU Stage 1 tune on my C8 RS7, and the results are amazing. Significant gains in power, torque, and even fuel economy, plus a much more aggressive exhaust note. The...

  • ★★★★★

    BMW 330e 73 plate stage 1 tune

    Had a stage 1 tune done on a 73 plate BMW 330e by Eoghan at JFAutomotive. The reason i come back to them repeatedly is because the service is exceptional, and the work has always been first class. Communication with them is quick and helpful, and...

On the road

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Delivered or fitted

Delivered to your door

We order your kit from Armytrix and deliver it to your door, free anywhere in the UK. Have it fitted by a certified installer to keep the Armytrix warranty.

Find your kit

Fitted at JF Automotive, Maidstone

Ask for a fitted price and we quote one figure for the kit and the fitting, done by a certified Armytrix installer. Armytrix covers its systems for 12 months from installation when fitted by a certified installer. Have it fitted by us and that condition is met.

Armytrix fitting in Kent

Your choice of sound

Open and close the valves with Armytrix's wireless remote or the Armytrix app, which connects through a module that plugs into your car's diagnostic port. Some kits use the car's own valve control.

Stainless or titanium

Armytrix builds in T304 stainless steel, with titanium versions for many cars. Titanium is lighter and costs more.

Spread the cost

Pay in full or use Klarna at checkout. Pay-monthly finance is available on fitted jobs.