Isuzu DMAX & Mazda BT-50 (2021+) 3.5” Exhaust System | 304 Stainless Steel Australian Made
Isuzu D-MAX & Mazda BT-50 (2021+) 3.5” DPF-Back Exhaust – 4JJ3 Engine
Engineered for the latest generation 4JJ3 platform, this 3.5” DPF-back exhaust system delivers premium performance, refined sound, and long-term durability. Handcrafted on the Sunshine Coast using high-grade 304 stainless steel, each system is built to order with precision fabrication techniques for the perfect fit and finish.
⚠️ PLEASE NOTE:
- Professional installation required
- 1–2 week lead time (built to order)
Custom Fabrication Advantage
Unlike mass-produced systems, this exhaust is custom fabricated in-house, allowing for superior fitment, consistent quality, and attention to detail. Every system is built specifically for the D-MAX and BT-50 platform—no compromises.
Performance You Can Rely On
Designed to maximise exhaust flow after the DPF, this system helps:
- Reduce exhaust gas temperatures (EGTs)
- Improve engine efficiency
- Support better throttle response
Ideal for towing, touring, and demanding off-road conditions.
Refined Turbo Diesel Sound
Expect a deep, clean exhaust note under load, while maintaining a quiet and comfortable cabin during highway driving. This system is tuned to deliver the best of both worlds—presence outside, comfort inside.
Key Features
- 3.5” Custom Fabricated System – Built for optimal flow and durability
- 304 Stainless Steel Construction – Excellent corrosion resistance in harsh Australian conditions
- Handmade on the Sunshine Coast – Built in-house for strict quality control
- DPF-Back Design – Retains factory emissions equipment
- Precision Fitment – Designed specifically for 4JJ3 D-MAX & BT-50 models
- Low EGT Performance – Helps keep engine temps down under load
- Balanced Exhaust Note – Deep tone without excessive cabin drone
Vehicle Fitment
- Isuzu D-MAX (2021+) – 4JJ3 Engine
- Mazda BT-50 (2021+) – 4JJ3 Engine
Important Notes
- Professional installation is required
- DPF-delete configurations are for off-road use only and require ECU remapping
- DPF-delete setups will void factory warranty
Warranty Information
Modifying your vehicle does not automatically void your manufacturer’s warranty. Under Australian Consumer Law, as outlined by the ACCC, a warranty can only be denied if the modification is proven to have caused the fault.
Built for Australian Conditions
From the Sunshine Coast to the harshest off-road environments, this system is built to last. Combining premium materials with expert craftsmanship, it’s a reliable upgrade for drivers who demand performance and longevity.
Why Choose This System?
If you want a premium, Australian-made exhaust that delivers cooler temps, improved drivability, and a refined diesel note, this is the ultimate upgrade for your 4JJ3-powered D-MAX or BT-50.