The Toughdog Rear Leaf Springs for Mitsubishi Triton MK 1996-2006 deliver proven heavy-duty performance with precision-engineered load capacity tailored to your constant accessory weight. Designed and tested for Australian conditions, these premium leaf springs restore rear ride height, improve payload handling, and maintain superior on-road comfort whether you're carrying tools, camping gear, or towing. Backed by Toughdog's industry-leading warranty and available now with fast Australia-wide dispatch.
Browse all compatible suspension parts for your Rear Leaf Springs - Suits Mitsubishi using our parts finder.
| Make | Model | Series | Years | Configuration |
|---|---|---|---|---|
| Mitsubishi | Triton | MK | 1996-2006 | Cab Chassis / Dual Cab / Single Cab |
Not sure if this fits your vehicle or which spring rate to select? Contact our suspension experts for personalised advice or browse all suspension parts for your Mitsubishi Triton.
Selecting the correct spring rate is critical for optimal ride quality, vehicle control and suspension longevity. You must choose based on your constant accessory load — the combined weight of permanently installed equipment carried in or on the tray every day. Occasional loads such as camping gear used only on weekends, or trailer towing weight transferred through the towball, should NOT be considered constant load. Over-specifying spring rate will result in harsh ride quality, premature wear on bushings and shocks, and potentially dangerous handling characteristics on unloaded roads.
Common constant rear loads include: Steel or aluminium canopy/hardlid (40-80kg), aluminium toolboxes (15-30kg each), dual battery system (25-35kg), water tanks (when kept full for daily use), steel bull bars or rear bars (20-40kg), drawer systems (30-60kg), long-range fuel tanks (when calculating full weight), compressors and recovery equipment stored permanently.
NOT constant loads: Camping gear, fridges, swags and luggage removed between trips; firewood and food supplies; passengers; trailer towing weight (use airbag suspension to assist with occasional towing).
Professional installation by a qualified automotive mechanic or experienced 4WD workshop is strongly recommended for leaf spring replacement. This job requires vehicle lifting, spring compression tools, and torque wrench for correct U-bolt and shackle bolt tensioning. A full wheel alignment is mandatory after installation to ensure correct rear axle tracking and even tyre wear. All fasteners must be re-torqued after the first 500km, and springs should be allowed a 500-1000km break-in period to settle and reach optimal ride height. For a complete rear suspension overhaul, consider pairing these leaf springs with upgraded rear shock absorbers for maximum performance, comfort and control.
Toughdog has been Australia's trusted suspension brand for over six decades, with every component designed, tested and proven on Australian roads and tracks. From Cape York to the Simpson Desert, Toughdog suspension systems are the choice of tradies, grey nomads, and serious four-wheel drivers who demand reliability, performance and value. Backed by comprehensive warranty coverage and supported by a nationwide dealer network, Toughdog delivers the confidence you need for work and adventure. Explore the complete Toughdog suspension range for your vehicle.
These heavy-duty rear leaf springs are ideal for Mitsubishi Triton MK owners who carry constant loads in their tray — including tradies with toolboxes and equipment, tourers with permanent canopies and dual battery systems, or recreational users with drawer setups and long-range tanks. If you regularly tow caravans or trailers but don't carry heavy constant loads, consider adding in-coil airbag suspension to factory or light-rated springs for on-demand load support without sacrificing unladen ride comfort. This setup allows you to inflate airbags only when towing, maintaining a comfortable daily ride.
Ready to restore your Triton's rear end? These Toughdog rear leaf springs are in stock now at our Australian warehouse with fast dispatch Australia-wide. Need a complete suspension upgrade? Browse our full range of lift kits and suspension components, or contact our experienced team for personalised advice on the best setup for your vehicle and usage.
Yes, these Toughdog rear leaf springs are specifically engineered for Mitsubishi Triton MK series from 1996 to 2006, covering all body styles including single cab, dual cab, and cab chassis configurations. The springs are designed to bolt directly into factory mounting points using your existing U-bolts and shackles (hardware sold separately). If you have an earlier ML or later ML/MN model, these springs will not fit — please check our parts finder to locate the correct springs for your specific year and series. Our team can confirm exact fitment if you provide your VIN number.
These Toughdog rear leaf springs are primarily designed to restore factory ride height on sagging or worn original springs, or to provide load-carrying capacity rather than significant lift height. Depending on spring rate selection and constant load, you can expect 0-25mm of additional height over worn factory springs when unladen, with the springs maintaining level stance under load. If you're looking for a more substantial lift for larger tyres or off-road clearance, consider a complete Toughdog lift kit that includes matched front and rear springs plus extended shock absorbers. The primary benefit of these springs is improved load capacity and ride quality restoration.
This kit includes a pair (left and right) of Toughdog heavy-duty rear leaf springs with pre-installed eye bushings and corrosion-resistant coating. The springs are supplied ready to install with factory-spec mounting dimensions. However, this kit does NOT include U-bolts, centre bolts, shackles, shackle bushings, or mounting hardware — these components should be reused from your original springs if in good condition, or purchased separately as required. If you're completing a full rear suspension rebuild, we recommend also replacing shock absorbers, U-bolts and shackle bushings at the same time for optimal performance and safety.
Yes, when correctly spec'd for your constant accessory load, these Toughdog rear leaf springs significantly improve towing stability by maintaining level vehicle stance and reducing rear squat under trailer tongue weight. However, spring rate selection must be based on your permanent tray load only — NOT on towing weight. If you tow occasionally but don't carry heavy constant loads, consider selecting a lighter spring rate and adding adjustable airbag suspension for on-demand load support when towing. This combination provides comfortable daily driving with the ability to inflate airbags only when you hook up the trailer, delivering the best of both worlds.
For the Mitsubishi Triton MK rear suspension, control arms (also called trailing arms or radius arms) are not typically part of the leaf spring suspension setup, as leaf springs provide both load support and lateral location for the rear axle. However, if you're installing these springs as part of a complete suspension upgrade with significant lift height, you may need to inspect and potentially replace rear upper shock mounts, bump stops, or brake line brackets to accommodate increased suspension travel. Front control arm upgrades may be beneficial if you're also lifting the front of your Triton. Contact our team for complete suspension package recommendations.
Yes, a full four-wheel alignment is mandatory after installing new rear leaf springs, even though rear alignment adjustments on the Triton MK are limited. The installation process involves removing and refitting the rear axle, which can affect axle alignment and tracking. Professional alignment ensures your rear axle is correctly centred, eliminates any steering pull, and prevents premature or uneven tyre wear. Most alignment shops will check toe, thrust angle and axle tracking on the rear, and perform full adjustment on the front suspension. Re-check alignment after the first 500km once springs have settled and all bolts have been re-torqued to specification.
Absolutely — Toughdog rear leaf springs are available in multiple spring rate options to perfectly match your specific constant load requirements. When ordering, you'll select the spring rate based on the combined weight of permanently installed accessories such as canopies, toolboxes, drawer systems, dual batteries, and water tanks. It's critical to calculate only your constant load — equipment that's installed and carried every day. Do NOT include occasional camping gear, passengers, or towing weight in your calculation, as over-specifying spring rate will result in harsh ride quality, poor handling when unladen, and accelerated wear on bushings and shock absorbers. If you're unsure of your exact constant load, our suspension experts can guide you through the calculation process.
These rear leaf springs may provide 0-25mm of additional ride height over worn factory springs, which offers minimal additional clearance for larger tyres. Tyre fitment is primarily limited by front suspension height, guard clearance, and scrub radius on the Triton MK platform. If your goal is to fit significantly larger tyres (32-33 inches or bigger), you'll need a complete front and rear suspension lift kit that raises the entire vehicle and provides adequate clearance at full suspension compression and steering lock. For mild tyre size increases (up to 31 inches), these rear springs combined with front coil spacers or new front springs may be sufficient, though guard trimming or wheel offset changes may still be required.
Toughdog rear leaf springs are backed by the manufacturer's comprehensive warranty against defects in materials and workmanship. Specific warranty duration and terms are provided with your purchase and vary based on application and usage type. Warranty coverage typically requires professional installation, proof of purchase, and adherence to recommended maintenance intervals including bolt re-torquing. Warranty does not cover damage from incorrect spring rate selection, overloading beyond rated capacity, accident damage, or installation errors. For full warranty terms and conditions, contact our team or visit the Toughdog brand page when ordering. All Toughdog products sold through 4WD Suspension are 100% genuine Australian stock with full local warranty support.
Yes, when correctly matched to your constant load, Toughdog rear leaf springs deliver excellent daily driving comfort and control. The progressive multi-leaf design provides a comfortable unladen ride while maintaining stability and load capacity when carrying equipment. However, if you select a spring rate that's too heavy for your actual constant load, you will experience harsh ride quality, excessive road noise transmission, and poor small-bump compliance during daily commuting. For the best balance of comfort and capability, accurately calculate your permanent accessory weight and select the appropriate spring rate — don't over-spec based on occasional loads or theoretical future upgrades. Many tradies and tourers run these springs daily with complete satisfaction when correctly specified.
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