Best Exhaust Guide for Great Wall Cannon (GWM Cannon NPW) — 2020 to 2025
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Best Exhaust Guide for Great Wall Cannon (GWM Cannon NPW) — 2020 to 2025
If you own a Great Wall Cannon you already know it's one of the most capable mid size utes on the Australian market. The 2.0L GW4D20M turbo diesel punches well above its weight but like most factory setups the stock exhaust system is engineered around noise regulations and cost targets not outright performance. That means there's real power torque and efficiency sitting on the table just waiting to be unlocked.
Whether you're towing a caravan across the Nullarbor, crawling through a muddy track in the high country or just want your Cannon to feel more alive on the daily commute a quality aftermarket exhaust is one of the best bang for buck upgrades you can make. This guide walks you through everything you need to know what to look for, what we offer and which system suits your driving style.
Why Upgrade Your GWM Cannon Exhaust?
The factory exhaust on the Cannon NPW does its job quietly and conservatively. But "conservative" isn't exactly what most Cannon owners are after. Here's what a quality aftermarket DPF back exhaust actually delivers:
- More power and torque — Reduced backpressure lets the turbo spool faster and the engine breathe more freely typically adding 15–25hp at the wheels.
- Lower exhaust gas temperatures (EGTs) — Critical for towing and hard work. Cooler EGTs mean a healthier engine and DPF over the long haul.
- Better fuel economy — Less restriction means the engine works less hard. Many owners report 10–15% fuel savings on highway runs.
- Improved throttle response — Less turbo lag, more responsive acceleration especially when loaded or overtaking.
- A proper exhaust note — The factory system is almost too quiet. A good aftermarket setup gives you a deep, purposeful diesel growl without being antisocial.
DPF Back vs. Turbo Back — What's the Difference?
For the GWM Cannon NPW, the most practical upgrade is a DPF back exhaust. This replaces everything from the outlet of the Diesel Particulate Filter (DPF) to the rear of the vehicle leaving the DPF and upstream components intact.
A turbo back system replaces everything from the turbocharger outlet, including the DPF which removes emissions equipment. For a daily driver, touring rig, or tow vehicle DPF back is the smart and practical choice. You still get substantial performance gains without the compliance headaches.
Our GWM Cannon Exhaust Systems
At Outback Exhausts we build our systems specifically for Australian conditions not adapted from overseas templates. Every system is mandrel bent from 409 grade stainless steel, test fitted on actual GWM Cannon vehicles and backed by a 5-year warranty. Here's what we currently offer for the Cannon NPW:
DPF Back Exhaust — GWM Cannon NPW 2.0L GW4D20M Turbo Diesel (2020–2025)
This is our flagship system for the Cannon NPW. Precision engineered in Australia, it's a direct bolt on replacement for the factory DPF back section no cutting, no fabrication, no drama. Available in two sound configurations to suit your preference:
- Straight Pipe / No Muffler — Maximum flow, loudest note. Ideal for dedicated off-road use or those who want the most aggressive sound and performance.
- Resonator / Small Muffler — Quieter than the straight pipe option, still noticeably better than stock. The sweet spot for daily drivers and touring rigs where cabin comfort matters.
View Product — DPF Back Exhaust for GWM Cannon NPW
Comparative Analysis — GWM Cannon Exhaust Options
Not sure which configuration is right for you? Here's a side by side breakdown to help you decide:
| Exhaust System | Engine Fit | Pipe Size | Best For | Key Benefit | View Product |
|---|---|---|---|---|---|
| DPF Back — Straight Pipe / No Muffler | GWM Cannon NPW 2.0L GW4D20M Turbo Diesel (2020–2025) | 3.5 inch (88.9mm) | Off-road, maximum performance, aggressive sound | Maximum flow, lowest backpressure, loudest note | View Product |
| DPF Back — Resonator / Small Muffler | GWM Cannon NPW 2.0L GW4D20M Turbo Diesel (2020–2025) | 3.5 inch (88.9mm) | Daily driving, touring, towing, highway cruising | Performance gains with a quieter, more refined note | View Product |
Browse All GWM Cannon Exhaust Systems →
What's Included With Every Outback Exhaust System?
We don't believe in surprises at the checkout or at the workshop. Every Outback Exhausts system for the GWM Cannon includes:
- Complete DPF back exhaust system
- All necessary gaskets (excluding DPF gasket)
- All mounting hardware for a clean, professional fit
- Fitment instructions for DIY or workshop installation
Installation is straightforward for experienced home mechanics most complete the job in 1–2 hours with basic tools and a quality jack. If you'd prefer a professional fit any exhaust workshop or 4x4 specialist can handle it without issue.
Fitment — Will This Fit My Cannon?
Our DPF back system is engineered specifically for:
- Make: GWM (Great Wall Motors)
- Model: Cannon NPW (Ute/Pickup)
- Engine: 2.0L GW4D20M Turbo Diesel (4-cylinder)
- Years: September 2020 – 2025
Before ordering confirm your engine code is GW4D20M you'll find it on the engine cover or compliance plate. If you're unsure browse our full GWM Cannon range or get in touch and we'll confirm fitment for you.
Real-World Performance — What Cannon Owners Are Saying
The numbers are one thing but the real test is out on the road or off it. Cannon owners who've fitted our DPF back system consistently report the same things: the throttle feels sharper, the turbo spools noticeably quicker and towing heavy loads feels less like hard work. The exhaust note is deeper and more satisfying without being obnoxious on a long highway run. And for those watching the fuel gauge on remote trips the economy gains are a genuine bonus.
It's the kind of upgrade that makes you wonder why you didn't do it sooner.
Frequently Asked Questions
How much power will I gain?
Most owners see noticeable improvements in torque and throttle response. The GW4D20M turbo diesel responds particularly well to reduced backpressure the difference is most obvious when towing or driving loaded.
Straight pipe or resonator — which should I choose?
If you want maximum performance and don't mind a louder note go straight pipe. If you're doing long highway runs, towing with passengers or just prefer a more refined sound, the resonator option gives you the performance gains with a more livable cabin experience.
Ready to Upgrade?
Your GWM Cannon deserves an exhaust system that matches its capability. Whether you're building a serious touring rig, a hard-working tow vehicle or just want more out of your daily driver. Outback Exhausts has you covered built in Australia for Australian conditions.
View the DPF Back Exhaust for GWM Cannon NPW → | Browse All GWM Cannon Exhaust Systems →
