2.5" Turbo Back Exhaust System - Holden Rodeo RA/R9 3.0L 4JH1-TC Turbo Diesel (1998-2003) | Outback Exhausts

Premium 2.5" Turbo Back Exhaust System for Holden Rodeo RA/R9 3.0L 4JH1-TC Turbo Diesel

Unlock the full potential of your 1998-2003 Holden Rodeo RA/R9 3.0L 4JH1-TC turbo diesel. This premium 2.5-inch turbo back exhaust system is precision-engineered in Australia specifically for the RA/R9 Rodeo, delivering substantial gains in power, torque, and fuel efficiency while reducing exhaust gas temperatures and turbo lag.

Key Features & Benefits

• Premium 409 Stainless Steel Construction - Superior corrosion resistance designed for Australian conditions, built to outlast mild steel systems by decades
• Full 2.5" Mandrel Bent Tubing - Smooth, unrestricted exhaust flow maximizes turbo efficiency and engine performance throughout the rev range
• Turbo Back Design - Complete system from turbo outlet to rear, eliminating all factory restrictions for maximum flow and performance
• Bolt-On Fitment - Direct replacement design with all gaskets, flanges, and hardware included for straightforward installation
• Australian Engineered & Manufactured - Designed, tested, and built in Australia for Australian driving conditions and Rodeo specifications
• 5-Year Warranty - Comprehensive coverage on materials, welds, and corrosion perforation backed by our confidence in quality
• Enhanced Exhaust Note - Deep, purposeful diesel tone without excessive cabin noise

Performance Improvements You'll Experience

This turbo back system dramatically reduces backpressure by up to 40% compared to the restrictive factory exhaust, allowing your 4JH1-TC turbo diesel to breathe freely. Expect improved throttle response with noticeably reduced turbo lag, stronger mid-range torque for towing caravans, trailers, and boats, increased top-end power for highway overtaking and loaded driving, lower exhaust gas temperatures for improved engine longevity, quicker turbo spool for more responsive acceleration, and potential fuel economy gains of 8-12% under highway driving conditions. The 2.5" diameter is specifically optimized for the 4JH1-TC's output, providing maximum flow while maintaining proper exhaust velocity.

Perfect For

• 4x4 touring and remote area expeditions
• Towing heavy caravans, camper trailers, boats, and work equipment
• Daily driving and long-distance highway cruising
• Off-road adventures, beach driving, and farm work
• Commercial and trade applications
• Replacing worn, rusted, or damaged factory exhaust systems
• Enthusiasts seeking improved performance and sound

What's Included

Complete turbo back exhaust system with all necessary gaskets (excluding turbo gasket), and mounting hardware for professional or DIY installation.. System weight: 22kg.

Fitment Specifications

• Make: Holden
• Model: Rodeo RA / R9 Series
• Engine: 3.0L 4JH1-TC Turbo Diesel Direct Injection (4-cylinder)
• Years: October 1998 - June 2003
• Configuration: Turbo Back (from turbo outlet to rear)
• Pipe Diameter: 2.5 inch (63.5mm)
• Material: 409 Grade Stainless Steel
• Weight: 22kg

Why Choose Outback Exhausts?

With decades of experience in the Australian 4x4 exhaust market, Outback Exhausts has earned a reputation for building systems that survive the harshest conditions. Every system is precision-engineered using advanced mandrel bending technology to maintain consistent pipe diameter through all bends, ensuring maximum flow without restrictions. Our MIG welding ensures leak-free, durable joints that withstand extreme vibration and temperature cycling. Each system is test-fitted on actual Holden Rodeo vehicles to guarantee perfect alignment and fitment. We stand behind our work with a comprehensive 5-year warranty and Australian-based customer support.

Frequently Asked Questions

Will this Outback Exhaust fit my Holden Rodeo?

Yes, Outback Exhausts are specifically designed for Holden Rodeo RA and R9 series models with the 3.0L 4JH1-TC turbo diesel direct injection engine manufactured between October 1998 and June 2003. It will NOT fit earlier TF models (1988-1998 with 2.8L 4JB1 engine) or later models. Please verify your engine code (4JH1-TC) and manufacturing date before ordering.

How much power gain can I expect from an Outback Exhaust?

The 2.5" turbo back system typically delivers 10-18 horsepower gains at the wheels, with even more substantial improvements in torque throughout the rev range. Most owners report the biggest difference in throttle response, reduced turbo lag, and stronger mid-range pulling power. The turbocharged 4JH1-TC responds exceptionally well to reduced backpressure, making the Rodeo feel significantly more responsive, especially when loaded or towing heavy trailers and caravans.

Is the Outback Exhaust louder than the factory system?

Yes, this system produces a deeper, more aggressive diesel tone compared to the factory exhaust. It has a satisfying rumble at idle and a purposeful growl under acceleration, but it's not excessively loud during highway cruising. The sound level is ideal for those who want improved performance and a more engaging exhaust note without excessive cabin noise. It's significantly quieter than straight-through systems while still delivering excellent flow and a satisfying diesel sound.

Can I install the Outback Exhaust myself or do I need a mechanic?

This is a bolt-on turbo back system designed for straightforward installation. Experienced home mechanics with proper tools, a quality jack and stands, and basic exhaust work experience can complete the installation in 2-4 hours. The turbo back design means you're working from the turbo outlet rearward. However, professional installation is recommended if you're not comfortable working under your vehicle or dealing with potentially seized exhaust bolts, which are common on older Rodeos. All necessary gaskets and hardware are included.

What's included in the 5-year warranty?

Our 5-year warranty covers manufacturing defects, material failures, weld integrity, and corrosion perforation of the stainless steel components under normal use conditions. The warranty does not cover damage from accidents, improper installation, modifications, or abuse. 

Will an Outback Exhaust improve fuel economy?

Yes, many customers report improved fuel economy, particularly during highway driving and when towing. The reduced backpressure and improved turbo efficiency allow the 4JH1-TC engine to operate more efficiently. Typical improvements range from 8-12%, with the biggest gains seen during steady-state highway cruising. Results depend on driving style, vehicle condition, load, and terrain, but the turbo back design provides measurable efficiency improvements.

What material is the exhaust made from and how long will it last?

This system is constructed from premium 409-grade stainless steel, which offers excellent corrosion resistance and durability in Australian conditions. In typical use, you can expect 15-20+ years of service life. The stainless steel resists rust far better than mild steel systems, which is especially important for beach driving, river crossings, coastal environments, and the high-temperature operation of turbocharged diesels. We back this with a comprehensive 5-year warranty against manufacturing defects and corrosion perforation.

What's the difference between this and the earlier TF Rodeo exhaust?

The Outback exhaust is specifically designed for the RA/R9 Rodeo (1998-2003) with the 3.0L 4JH1-TC engine, which is a different engine and chassis from the earlier TF Rodeo (1988-1998) with the 2.8L 4JB1 engine. The mounting points, pipe routing, and dimensions are completely different. Make sure you order the correct exhaust for your specific Rodeo model and engine code to ensure proper fitment.

How long does shipping take?

Yes, we ship world-wide with fast dispatch. Most orders are dispatched within 24 hours. Metro areas typically receive orders within 3-5 business days, while regional and remote areas may take 5-10 business days. This is a large, heavy item (22kg), so freight times may vary by location. Full tracking information is provided for all shipments so you can monitor your delivery progress.