Outback Exhausts - RAM 1500 DS 5.7L V8 Cat Back Exhaust - 4-3" System 2018-2021

4''- dual 3" Cat Back Exhaust System for RAM 1500 DS 5.7L V8 (2018-2021)
Transform your RAM 1500 DS with our premium Australian-made 4-3" cat-back exhaust system. Engineered specifically for the 5.7L HEMI V8, this exhaust delivers exceptional power gains, an aggressive V8 rumble, and the legendary Outback Exhausts quality that Australian 4x4 enthusiasts trust.
Key Features & Benefits
- 4'' to Dual 3" Mandrel-Bent Design: Maximizes exhaust flow for significant power and torque gains across the RPM range
- Premium Stainless Steel Construction: Built from high-grade 409 stainless steel for superior corrosion resistance and longevity
- Cat-Back System: Complete replacement from catalytic converter to tailpipe for optimal performance
- Aggressive V8 Sound: Deep, throaty HEMI rumble that turns heads without excessive drone
- Bolt-On Installation: Direct fit replacement with all necessary hardware included
- 5-Year Warranty: Backed by our comprehensive Australian warranty for complete peace of mind
- Improved Throttle Response: Reduced back pressure delivers instant power delivery
- Enhanced Towing Capability: More torque means confident towing of caravans, boats, and trailers
- Show-Quality Finish: Polished stainless steel tips for a premium appearance
Perfect For
Whether you're towing across the Outback, daily driving in the city, or showcasing your RAM at meets, this exhaust system delivers the performance and sound that HEMI V8 owners demand. Built tough for Australian conditions and engineered for maximum performance.
Specifications
- Vehicle: RAM 1500 DS
- Engine: 5.7L HEMI V8
- Years: 12/2018 - 2021
- Configuration: Cat-Back (4 into dual 3")
- Pipe Diameter: 3 inch (76mm)
- Material: Premium 409 Stainless Steel
- Weight: 41kg
- Finish: Polished Stainless Tips
What's Included
- Complete cat-back exhaust system
- Polished stainless steel exhaust tips
- All necessary gaskets and hardware
- 5-year manufacturer warranty
Performance Gains
The 4-dual 3" design significantly reduces exhaust restriction compared to the factory system, allowing your 5.7L HEMI to breathe freely. Expect noticeable improvements in throttle response, mid-range torque, and top-end power—perfect for overtaking, towing, and spirited driving.
Frequently Asked Questions
Will the Outback exhaust fit my RAM 1500 DS?
The outback exhaust is specifically designed for RAM 1500 DS models with the 5.7L HEMI V8 engine from December 2018 to 2021. It's a direct bolt-on cat-back replacement.
How much louder is the Outback Exhaust compared to stock?
You'll experience a significantly deeper and more aggressive V8 rumble compared to the factory exhaust. The sound is sporty and commanding during acceleration, but designed to minimize drone during highway cruising. It's the perfect balance of performance sound without being obnoxious.
What power gains can I expect from an Outback Exhaust?
While results vary depending on your vehicle's condition and other modifications, most customers report noticeable improvements in throttle response and mid-range torque. The reduced back pressure allows the HEMI V8 to perform closer to its full potential, particularly beneficial when towing or carrying loads.
Can I install the Outback Exhaust myself?
The outback exhausts is a bolt-on cat-back system designed for straightforward installation. If you're mechanically inclined with basic tools, a vehicle lift or jack stands, and exhaust experience, you can install it yourself in 2-3 hours. Professional installation is recommended if you're not confident with exhaust work.
What's covered under the 5-year warranty?
The Outback Exhausts 5-year warranty covers manufacturing defects and material failures under normal use. This includes weld integrity, material corrosion, and structural failures. Normal wear and tear, damage from accidents, improper installation, or modifications are not covered.
Will an Outback Exhaust improve my fuel economy?
Some customers report modest fuel economy improvements due to reduced back pressure and improved engine efficiency. However, the aggressive sound may encourage a heavier right foot! Results vary based on driving style and conditions.
Does the Outback Exhaust system include the catalytic converters?
No, this is a cat-back system, meaning it replaces everything from the catalytic converters back to the tailpipe. Your factory catalytic converters remain in place, ensuring emissions compliance.
How long does shipping take?
We stock this item and typically dispatch within 24 hours. Delivery times vary by location across Australia, with most metro areas receiving orders within 3-7 business days. We ship world-wide.
Can I return to stock exhaust later?
Yes, this is a complete bolt-on replacement system. You can reinstall your factory exhaust at any time if needed. We recommend keeping your original exhaust for this purpose.
What makes Outback Exhausts different from imported Exhaust systems?
Outback Exhausts are designed and manufactured in Australia specifically for Australian conditions. We use premium-grade 409 stainless steel, precision mandrel bending. Plus, you get local warranty support and the confidence of buying Australian-made quality.
Ready to unleash your RAM 1500's true potential?
Order now and experience the Outback Exhausts difference. Australian-made performance you can trust.








