79 Series Single 4" Stainless Exhaust System

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  • Regular price $2,950.00
Tax included.

Before you Purchase

Our supplied systems may not fit with the following upgrades -

Toolboxes, watertanks, Air Bags, Coil Conversions, GVM Upgrades, chassis extensions.

GSL High-flow Elite DPF System

The Elite DPF System is our own proprietary Active DPF solution that allows better flow, and can handle higher temps than factory. This system however is not available for delivery, and can only be installed in our store, or via one of the certified dealers below

  • Culters Diesel Performance
  • G&L Motor Repairs & Performance

We also do not sell this in sections, but only as a full exhaust system - front to back. Our Elite DPF will also require a remap to setup the burn rate, and other settings to suit your vehicle. 

If you're interested in purchasing an Elite DPF System

Shoot us an email

GSL Single 4" Stainless Exhaust System

The Twin's little brother - the single - is no runt of the litter, you can still expect the quality GSL sound you've come to know with the single exit 4" stainless steel system.

This system can be beneficial for vehicles fitted with under-tray mods - such as tool boxes and auxiliary water tanks - and in some cases, is easier to fit around coil conversions.

If practicality is your number one concern, than this exhaust is a prime candidate for your vehicle.

skooby twin

Adventure proof

If you plan on getting a cruiser, chances are you plan on giving it a bit of a hammering, whether it be off-roading, camping, beach driving, Hill climbing or more. We’re exactly the same, and because of this, we strive to make sure our exhausts are built to withstand the toughest adventures. High quality 304 grade 4’’ stainless steel, sturdy custom folded bracketry, and top quality welding work.


Hand made by true 4x4 lovers

At GSL, all of our piped systems (exhausts, engine upgrades etc.) are made completely by hand. With 7 years of perfecting and adjusting these system one bend at a time, our reputation for outstanding quality products speaks for itself. Not to mention, it looks fantastic! All of our products are Australian made and sourced, so you’ll also be supporting local Aussie suppliers.

  clearance graph   Brushed Finish


The ‘Turbo back’ systems are great for pre DPF models (pre-2017).
They give the nicest note, and best performance gain of all exhaust types, however more recent models are legally required to have a DPF in place. This variant removes the DPF entirely and in most areas, is an illegal modification - thereby voiding any warranty’s on the vehicle. This is an option for off-road and track use only.

The system starts with a 5 inch dump, moving into a 4 inch CAT, a 4 inch muffler section, and finishing off with a 4 inch tail.

Dump Pipe GSL Front Section Exhaust Single Muffler Section Single Tail section


1 / 5 Dump Pipe 2 / 5 GSL Front Section Exhaust 3 / 5 Single Muffler Section 5 / 5 Single Tail secondary


Australian made upgraded DPF (Diesel Particulate Filter). The main reason for this mod is to give you the V8 note that standard DPF models are lacking. Being a high flow, this eliminates the bottle-necking issue with the standard DPF’s, and assures consistent power with no drawbacks.

This option is great for everyday use, keeping your vehicle compliant with vehicle emission standard.

The system starts with a 5 inch dump, moving into a 4 inch Elite DPF Section a 4 inch muffler section, and finishing off with a 4 inch tail.

The Elite DPF system is an in house only, we cannot post this exhaust system as it does require remapping by GSL. 


This system utilises the standard DPF, while still delivering the great note of our exhausts. If you’re chasing sound over performance, then this is the perfect exhaust. From the back it’ll look just as good, so you don’t miss out on aesthetics either!

This option is great for everyday use, as it’s a little quieter and keeps your vehicle compliant with vehicle emission standards.

The system starts with a Standard DPF to 4 inch adapter section, moving into a 4 inch CAT, a 4 inch muffler section, and finishing off with a 4 inch tail.

DPF Adapter Single Muffler Section Single Tail secondary



Customer Reviews

Based on 10 reviews
James Nixon
Spot on

This is my second one I’ve got and I love the look and the sound of it. Thankyou

John Ford
Quality craftsmanship and product.

Well made, perfect fit.
Gives a nice note and lets the big girl breathe.
Looking forward to getting up to get the tune package complete to finish it off and reap the rewards.

Kevin Richings

Good product.

Trent Hambrecht
Dpf back exhaust

Awesome product dpf back easy to fit and sounds great. Such good quality thanks boys

Mark Sullivan

The exhaust system was easy to install and fitted perfectly, great quality, and sounds great. Thanks GSL for the great service, delivery, and for the great products, I am very happy and would recommend to anyone.