Toughdog rear leaf springs for Mitsubishi Triton ML-MN deliver proven heavy-duty performance engineered specifically for Australian touring, towing and trade applications. Precision-manufactured to restore or enhance your Triton's load-carrying capacity, these replacement leaf springs offer superior ride quality compared to worn factory springs while maintaining excellent on-road handling. Backed by Toughdog's comprehensive warranty and Australian engineering expertise, these springs are in stock now with fast dispatch across Australia.
Browse all compatible suspension parts for your Rear Leaf Springs - Suits Mitsubishi using our parts finder.
Note: U-bolts, shock absorbers, and other suspension components sold separately. Professional installation recommended.
| Make | Model | Series | Years | Configuration |
|---|---|---|---|---|
| Mitsubishi | Triton | ML | 2006-2009 | 4WD Models |
| Mitsubishi | Triton | MN | 2009-2015 | 4WD Models |
Not sure if this fits your vehicle? Browse all suspension parts for the Mitsubishi Triton MN or contact our suspension experts for personalised fitment advice and spring rate recommendations.
Selecting the correct spring rate is critical for optimal performance and ride quality. Your spring rate choice should be based on your constant load — the weight permanently installed on your vehicle such as steel bullbars, winches, canopies, steel trays, drawer systems, dual battery setups, long-range fuel tanks, and permanently mounted water tanks. Occasional loads like camping gear, passengers, or intermittent towing should not be considered when selecting spring rates, as choosing excessively heavy springs will result in harsh ride quality, accelerated wear on other suspension components, and poor handling when the vehicle is unladen. Common rear accessories affecting spring selection include aluminium or steel canopies (30-80kg), drawer systems (40-100kg), dual spare wheel carriers (40-60kg), and rear bar with wheel carrier (30-50kg).
Professional installation by a qualified mechanic or experienced 4WD suspension specialist is strongly recommended for leaf spring replacement to ensure correct fitment, torque specifications, and safety. Wheel alignment is mandatory after installation as spring replacement can affect suspension geometry and wheel positioning. All leaf springs require a 500km break-in period during which the springs will settle and the vehicle ride height may lower slightly — this is normal and expected. For vehicles with significant lift or heavy constant loads, consider pairing these springs with upgraded suspension components including extended-length shock absorbers, diff drop kits, and brake line extensions for optimal performance and safety.
Toughdog is Australia's most trusted suspension brand, with decades of experience manufacturing heavy-duty 4WD suspension systems purpose-built for Australian conditions. Every Toughdog component undergoes rigorous testing on Australian outback roads, ensuring proven reliability for tourers, tradespeople, and recreational four-wheel drivers. Backed by comprehensive warranty coverage and supported by a nationwide network of retailers and installers, the full Toughdog suspension range represents unbeatable value and performance for Australian 4WD owners.
These Toughdog rear leaf springs are ideal for Mitsubishi Triton ML-MN owners who regularly carry heavy loads, tow caravans or trailers, or have added significant aftermarket accessories that have caused rear-end sag. Perfect for tradespeople running toolboxes and equipment, grey nomads towing vans, touring enthusiasts with rooftop tents and camping gear, and families who've upgraded to steel canopies or drawer systems. For maximum load versatility and on-demand adjustability, these springs pair perfectly with airbag suspension systems that allow you to fine-tune your ride height and load support for varying conditions.
Ready to restore your Triton's ride quality and load-carrying capability? These Toughdog rear leaf springs are in stock now with fast dispatch across Australia. Our suspension experts are available to help you choose the right spring rate for your specific vehicle setup and constant load requirements. Need a complete suspension overhaul? Browse our full lift kit range for comprehensive front and rear suspension solutions tailored to your Mitsubishi Triton.
These Toughdog rear leaf springs are specifically engineered for Mitsubishi Triton ML series (2006-2009) and MN series (2009-2015) 4WD models. They are direct bolt-in replacements for factory rear leaf springs and fit both single cab and dual cab configurations. If you're unsure about your exact model year or variant, check your VIN plate or contact our team who can confirm fitment based on your vehicle details. These springs will not fit earlier or later Triton models including the MQ or MR series which require different part numbers.
These Toughdog rear leaf springs are primarily designed as heavy-duty replacement springs to restore factory ride height or compensate for constant accessory load, rather than dedicated lift springs. Depending on your current spring condition and constant load, they may provide 0-25mm of lift compared to worn factory springs, though actual lift varies based on spring rate selected and vehicle load. If you're specifically looking for suspension lift, these springs work well as part of a complete lift kit when paired with front lifted coil springs or strut spacers. The primary benefit is enhanced load capacity and towing performance rather than maximum lift height.
This kit includes a complete pair of Toughdog heavy-duty rear leaf springs (left and right sides), premium polyurethane bushings, spring centre bolts, and all necessary hardware for spring assembly. The springs feature galvanised steel construction with corrosion-resistant coating and come ready to install. Please note that U-bolts, shock absorbers, shackles, and other mounting hardware are sold separately as these components are often reused from your existing setup or may need upgrading depending on your vehicle's condition. We recommend inspecting all suspension components during spring replacement and upgrading worn parts for optimal performance.
Yes, these Toughdog rear leaf springs are specifically engineered for towing applications and provide excellent performance when hauling caravans, camper trailers, and heavy trailers. The progressive spring rate design helps maintain level vehicle stance under towball weight, reducing rear-end sag and improving towing stability and safety. They work particularly well for regular towers who experience constant towball loads, though for maximum towing versatility we recommend pairing these springs with airbag suspension which allows on-demand adjustment for varying trailer weights. Always ensure your total towing setup remains within your vehicle's GVM and GCM ratings regardless of suspension upgrades.
While these leaf springs are direct replacements that don't require other upgrades, it's highly recommended to inspect your rear shock absorbers, U-bolts, shackles, and bushings during installation. If your shocks are worn or you're increasing load capacity significantly, upgrading to heavy-duty or foam cell shock absorbers will dramatically improve ride quality and control. U-bolts should always be replaced rather than reused as they can stretch and fatigue over time. If you're also lifting the front of your vehicle, maintaining balanced suspension geometry with matching front and rear upgrades ensures optimal handling, tyre wear, and driving dynamics.
Yes, a full four-wheel alignment is mandatory after installing new leaf springs on your Mitsubishi Triton. While rear leaf springs don't directly affect alignment angles the same way front suspension components do, spring replacement can alter rear axle position, ride height, and suspension geometry which affects overall vehicle alignment and tyre wear patterns. A professional alignment ensures your camber, caster, toe, and thrust angles are all within manufacturer specifications for safe handling, even tyre wear, and optimal steering response. Most reputable suspension installers include alignment in their installation service.
Spring rate selection should be based exclusively on your constant load — the permanent weight of accessories like bullbars, canopies, drawers, dual batteries, and long-range tanks that are always on your vehicle. Calculate the total weight of your rear constant load including canopy/tray (30-80kg), drawer system (40-100kg), dual spare wheel setup (40-60kg), and rear bar (30-50kg). Do not factor in occasional loads like camping gear, passengers, or towing as this will result in selecting springs that are too stiff, causing harsh ride quality when unladen. Our team can help you calculate your constant load and recommend the ideal spring rate during your order.
These rear leaf springs alone provide minimal to moderate lift and are primarily designed for load capacity rather than tyre clearance. If you're currently running factory-size tyres on a sagging suspension, new springs will restore clearance and may allow fitting tyres up to 265/70R16 or 265/65R17 depending on your wheel offset and other modifications. For significantly larger tyres (31-33 inches), you'll need a complete lift kit including front suspension lift, body lift, or a combination approach. The amount of lift these springs provide varies based on spring rate and load, so assess your tyre clearance goals when selecting your complete suspension package.
These Toughdog rear leaf springs are covered by Toughdog's comprehensive manufacturer warranty which protects against defects in materials and workmanship. Warranty coverage applies when springs are installed correctly by a qualified professional, used within the vehicle's GVM ratings, and maintained according to manufacturer recommendations. Warranty does not cover wear from overloading beyond vehicle ratings, damage from accidents or off-road impacts, or issues arising from incorrect installation. Keep your proof of purchase and installation records to validate warranty claims. Toughdog's reputation for standing behind their products gives you long-term confidence in your investment.
Absolutely — these Toughdog leaf springs are engineered to provide excellent on-road comfort and handling for daily driving while also delivering enhanced load capacity when needed. The multi-leaf progressive design prevents harsh ride quality when the vehicle is unladen, making them comfortable for commuting and highway touring. They maintain stable handling characteristics at highway speeds, reduce body roll in corners compared to worn factory springs, and improve braking performance by maintaining proper suspension geometry. Unlike some heavy-duty springs that sacrifice comfort for load capacity, Toughdog's engineering balances both requirements making them ideal for dual-purpose vehicles used for daily driving and weekend touring or work applications.
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