The Toughdog Rear Leaf Springs for Mitsubishi Triton ML-MN deliver Australia's most trusted heavy-duty rear suspension upgrade, engineered to handle serious loads while maintaining excellent ride comfort on and off-road. These precision-manufactured leaf springs are built from high-tensile steel with advanced spring rate options, ensuring your Triton performs flawlessly whether you're towing, carrying tools, or touring the outback. Backed by Toughdog's industry-leading warranty and Australian engineering heritage, these springs are in stock 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 | ML | 2006-2009 | Dual Cab, Single Cab |
| Mitsubishi | Triton | MN | 2009-2015 | Dual Cab, Single Cab |
Not sure if this fits your vehicle or which spring rate to choose? Browse all suspension parts for the Mitsubishi Triton MN or contact our suspension experts for personalised advice. You can also check our FAQ page for common fitment questions.
Choosing the correct spring rate is critical for optimal performance and ride quality. Your spring rate should match your constant accessory load — the weight permanently carried on your vehicle every day. Common rear accessories include steel or alloy canopies, aluminium toolboxes, dual battery systems, long-range fuel tanks, water tanks, drawer systems, and permanent camping equipment. Occasional loads like passengers, camping gear loaded for trips, or trailer towing should NOT be factored into your constant load calculation. Selecting springs that are too heavy for your actual constant load will result in an excessively firm ride, accelerated wear on other suspension components, and reduced handling performance.
Professional installation by a qualified mechanic or experienced 4WD workshop is strongly recommended for leaf spring replacement, as the procedure involves working with heavy components under load and requires proper safety equipment. A full wheel alignment is mandatory after installation to ensure correct axle positioning and prevent premature tyre wear. Allow a 500-1000km break-in period for the springs to settle and reach their optimal ride height and comfort level. When upgrading your rear suspension, it's also the perfect time to inspect and consider pairing with upgraded suspension components including bushes, shackles, and u-bolts for maximum performance and longevity.
Toughdog has earned its reputation as Australia's number one suspension brand through decades of proven performance in the harshest conditions imaginable. Every Toughdog component is engineered with Australian roads, loads, and environments in mind, extensively tested in real-world outback touring and commercial applications. Backed by comprehensive warranty coverage and trusted by tradespeople, grey nomads, and 4WD enthusiasts nationwide, Toughdog delivers unmatched reliability. Explore the complete Toughdog suspension range for premium quality suspension solutions.
These Toughdog rear leaf springs are ideal for Triton owners who regularly carry heavy loads including tradies with toolboxes and equipment, tourers with canopy setups and camping gear, and anyone towing caravans or trailers. If you experience rear-end sag, poor towing stability, or simply want to restore your Triton's load-carrying capability to better-than-new, these springs deliver exceptional results. For ultimate load management flexibility, especially when towing capacity varies significantly, consider pairing leaf springs with airbag suspension for adjustable support on demand.
All Toughdog products are held in Australian stock for fast dispatch nationwide. We provide expert technical support to ensure you select the perfect spring rate for your specific Triton configuration and use case. Order with confidence knowing you're getting genuine Toughdog quality backed by our suspension specialists. Ready to upgrade your entire suspension system? Browse our full lift kit range for complete front and rear packages designed specifically for the Mitsubishi Triton.
Yes, these Toughdog rear leaf springs (SKU: ML-9039) are specifically engineered to fit Mitsubishi Triton ML series (2006-2009) and MN series (2009-2015) models, including both dual cab and single cab configurations. They are a direct replacement for the factory rear leaf springs with no modifications required. Before ordering, confirm your vehicle's series designation (ML or MN) which can be found on your compliance plate or vehicle registration documents. If you're unsure about fitment or need assistance identifying your exact model, our suspension experts can help you confirm compatibility.
These Toughdog leaf springs are designed primarily as heavy-duty replacement springs with enhanced load capacity rather than dedicated lift springs. Depending on your selected spring rate and current vehicle load configuration, you may experience between 0-25mm of additional ride height compared to worn factory springs, though this varies based on the spring rate chosen and your constant accessory load. The primary benefit is restored or improved load-carrying capacity, reduced rear-end sag when loaded, and better towing stability rather than maximum lift height. If your goal is significant lift for larger tyres, consider pairing these springs with a complete lift kit that includes front suspension upgrades.
This kit includes two complete Toughdog heavy-duty rear leaf springs (left and right side) with pre-fitted bushes in both the front and rear spring eyes. The springs feature a multi-leaf pack construction with durable powder coat corrosion protection and are manufactured to Australian Design Rule (ADR) compliance. Note that mounting hardware including u-bolts, centre bolts, shackles, and shackle pins are sold separately as these components are often vehicle-specific or may be reusable from your original installation. It's also recommended to inspect your shock absorbers when fitting new leaf springs, as worn shocks will compromise the performance of your new springs.
Yes, these Toughdog rear leaf springs are excellent for towing applications when correctly rated to your vehicle's constant load. They significantly improve towing stability by reducing rear-end squat, maintaining level vehicle stance, and improving weight distribution when towing caravans, trailers, or boats up to your Triton's rated towing capacity. Proper spring rate selection is crucial — choose a rate that matches your unladen accessory weight, not your maximum towing weight, as the springs should support constant load while occasional towing loads are temporary. For maximum towing versatility, many customers pair these leaf springs with airbag suspension for adjustable load support.
Control arms are a front suspension component, and these leaf springs only affect your rear suspension, so they are not directly related to this upgrade. However, if you're experiencing rear-end sag and considering a complete suspension overhaul, it's worth inspecting your front suspension components including bushes, ball joints, and shock absorbers at the same time. Many Triton ML-MN owners choose to upgrade their entire suspension system progressively, starting with the rear springs to address load capacity issues, then moving to front suspension upgrades. If your Triton has high kilometres or shows signs of front-end wear, upgraded front suspension components will complement your new rear springs perfectly.
Yes, a full wheel alignment (including four-wheel alignment if available) is mandatory after installing new rear leaf springs. While leaf springs primarily affect rear suspension, replacing them can alter your vehicle's ride height, axle position, and weight distribution, which affects overall alignment geometry. Proper alignment ensures even tyre wear, optimal handling characteristics, and correct steering feel. Most reputable 4WD workshops will automatically include wheel alignment as part of the installation process. Skipping this critical step can result in rapid tyre wear, poor handling, and reduced safety, negating the benefits of your new suspension investment.
Yes, Toughdog manufactures these Triton ML-MN leaf springs in multiple spring rate options to accommodate different constant load configurations. It's critical to select the spring rate that matches your permanent accessory weight — the combined weight of canopy, toolboxes, drawers, dual batteries, long-range tanks, and other equipment you carry every single day. Do NOT select spring rates based on occasional loads like camping gear loaded for trips, passengers, or towing capacity, as this will result in an excessively harsh ride and potential damage to other suspension components. If you're unsure which spring rate is correct for your setup, contact our team with a list of your permanent accessories, and we'll recommend the optimal specification.
These leaf springs may provide modest additional clearance in the rear wheel arches depending on the spring rate selected and your vehicle's current loaded height, but they are not designed as dedicated lift springs for tyre clearance. Any tyre size increase requires careful consideration of both front and rear clearance, as the front suspension ultimately determines maximum tyre diameter. Most Triton ML-MN models can accommodate slightly larger tyres with these springs, but significant tyre upgrades typically require a complete lift kit including front suspension modifications. Always test fit tyres at full lock and full compression before finalizing tyre purchases to avoid rubbing on suspension components, body panels, or mudflaps.
Toughdog stands behind their Australian-engineered products with comprehensive manufacturer warranty coverage, giving you peace of mind in your suspension investment. Warranty terms cover manufacturing defects and premature failure under normal operating conditions, though specific duration and terms are provided with your purchase documentation. As with all suspension components, warranty coverage requires proper installation by a qualified mechanic, correct spring rate selection for your vehicle's constant load, and normal maintenance practices. Toughdog's reputation as Australia's number one suspension brand is built on reliability and standing behind their products, which is why they're trusted by commercial operators and touring enthusiasts alike.
Absolutely — when correctly rated to your constant accessory load, these Toughdog leaf springs deliver excellent daily driving comfort on highways, urban roads, and country driving. Unlike cheap aftermarket springs that compromise ride quality for load capacity, Toughdog's advanced multi-leaf design and precision engineering maintain comfortable ride characteristics even with enhanced load-carrying ability. The key is honest spring rate selection based on your actual permanent load, not aspirational maximum capacity. Many Triton ML-MN owners report improved daily driving comfort compared to worn factory springs, especially when carrying typical tradie or touring setups. These springs balance daily comfort, weekend adventure capability, and serious load-carrying performance without compromise.
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