Toughdog rear leaf springs for the Toyota LandCruiser 78 Series deliver legendary durability and load-carrying performance engineered specifically for Australian outback conditions. This heavy-duty pair offers selectable spring rates to match your constant load requirements, ensuring optimal ride quality whether you're touring remote tracks or carrying trade gear daily. Designed and tested in Australia, these premium leaf springs are backed by Toughdog's trusted warranty and ready for immediate dispatch from Australian stock.
Browse all compatible suspension parts for your Rear Leaf Springs Toyota Landcruiser 78 using our parts finder.
| Make | Model | Series | Years | Position |
|---|---|---|---|---|
| Toyota | LandCruiser | 78 Series (Troop Carrier) | 1999-2007 | Rear Axle |
| Toyota | LandCruiser | 78 Series (Troop Carrier) | 2007-Current | Rear Axle |
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 the Toyota LandCruiser in our parts finder.
Selecting the correct spring rate is critical for achieving optimal ride quality, vehicle handling and component longevity. Your spring rate choice should be based exclusively on your constant accessory load — the combined weight of permanently installed accessories and equipment that your vehicle carries every day. Do not factor in occasional loads such as passengers for weekend trips, camping gear used only during holidays, or towing loads which should be managed with supplementary systems. Overestimating your constant load and choosing springs that are too heavy will result in harsh ride quality, accelerated wear on other suspension components including bushings and shock absorbers, and potential damage to chassis mounting points.
Common rear constant load accessories for 78 Series LandCruiser: Dual battery systems and inverters, aftermarket rear bars and wheel carriers, long-range fuel tanks, water tanks and filtration systems, drawer systems and storage units, refrigerators and slide units, roof racks with permanent loads, communications equipment and UHF aerials, recovery gear storage, toolboxes and trade equipment for commercial operators.
Professional installation by a qualified suspension specialist or automotive technician is strongly recommended for leaf spring replacement. Installation requires proper spring tensioning, correct torque specifications for U-bolts and shackle pins, and precise alignment of spring centre bolts with axle locating pads. A complete wheel alignment is mandatory after installation to ensure correct tracking, prevent premature tyre wear, and maintain safe steering characteristics. All leaf springs require a 500-kilometre break-in period during which spring rates will settle and ride height may lower slightly as components seat properly — avoid maximum loads during this initial period.
For 78 Series vehicles being lifted or running increased loads, consider pairing these rear leaf springs with upgraded control arms to maintain correct castor angles and suspension geometry, particularly if you're running larger tyres or have modified your front suspension height.
Toughdog has earned its reputation as Australia's number one suspension brand through decades of engineering excellence, relentless outback testing, and unwavering commitment to quality. Every Toughdog component is designed specifically for Australian conditions and Australian-delivered vehicles, tested on our harshest corrugated tracks, bulldust, beach sand and rock crawling terrain. Trusted by tradies, grey nomads, mining operators and touring families from the Simpson Desert to Cape York, Toughdog suspension delivers proven performance backed by comprehensive warranty coverage and Australia-wide dealer support. View the full Toughdog suspension range to complete your 78 Series upgrade with matching front springs, shocks and steering components.
These heavy-duty rear leaf springs are ideal for Toyota LandCruiser 78 Series owners who demand maximum load-carrying capacity and durability — including touring enthusiasts carrying extended trip equipment, tradies with constant tool and equipment loads, mining and exploration operators, emergency services, and commercial operators running high-GVM configurations. Caravan and camper trailer owners will appreciate the improved towing stability and reduced rear squat, though those frequently carrying maximum loads should also consider supplementary airbag suspension systems for on-demand load adjustment and ride height control.
Toughdog rear leaf springs for the 78 Series LandCruiser are in stock now at 4WD Suspension Australia with fast dispatch to all Australian states and territories. Our suspension experts are available to help you select the perfect spring rate for your specific load requirements and can recommend complete suspension packages including shocks, bushings and hardware. Browse our full range of lift kits or contact us today for expert advice on transforming your 78 Series into the ultimate touring or work platform.
Yes, these Toughdog rear leaf springs are specifically engineered for Toyota LandCruiser 78 Series Troop Carrier models from 1999 to current production. They are direct OEM replacement springs that bolt into factory mounting points without modification. The springs fit both pre-2007 and post-2007 models, accommodating various engine configurations including the 4.2L diesel and 4.5L V8 turbo diesel. If you have a heavily modified 78 Series or are unsure about compatibility with your specific build year and variant, our suspension experts can verify exact fitment before you order.
Toughdog rear leaf springs for the 78 Series are primarily designed for load support and durability rather than substantial lift. Depending on the spring rate selected and your vehicle's current constant load, you can expect approximately 0-50mm of lift compared to worn factory springs, with the primary benefit being restoration of original ride height under load and prevention of rear-end sag. The actual lift achieved depends on your selected spring rate, current accessory load, and condition of your existing springs. For dedicated lift applications, these springs can be combined with other components from our lift kit range to achieve greater height increases while maintaining proper suspension geometry.
This kit includes two complete Toughdog heavy-duty rear leaf springs (one pair) with pre-fitted silicone inter-leaf inserts for noise reduction. The springs feature heat-treated alloy steel construction with corrosion-resistant powder coating and are ready to install. Please note that mounting hardware including U-bolts, spring shackles, bushings and pins are sold separately and must be purchased based on your specific installation requirements. We recommend replacing all mounting hardware during spring installation to ensure proper clamping force and prevent future failures. Shock absorbers are also sold separately and should be matched to your chosen spring rate for optimal performance.
Yes, Toughdog rear leaf springs are excellent for towing applications on the 78 Series LandCruiser. The heavier spring rate options significantly reduce rear-end squat when coupling a caravan or trailer, maintaining safer ride height, better headlight aim, and proper steering geometry under tow ball loads. When selecting your spring rate, factor in the constant tow ball download weight if you tow regularly, but remember that the trailer's total weight should not be considered constant load. For frequent towers or those approaching maximum towing capacity, consider supplementing these leaf springs with airbag suspension for on-demand load adjustment and the ability to level your vehicle perfectly regardless of tongue weight variation.
Control arm upgrades are not strictly necessary when installing replacement rear leaf springs on the 78 Series, as the rear axle uses a leaf spring and live axle configuration without upper or lower control arms. However, if you're also lifting or modifying your front suspension, upgraded front control arms become important to maintain correct castor and camber angles. For a complete suspension overhaul that includes front lift, we recommend reviewing control arm options to ensure your entire suspension system works harmoniously. Our suspension specialists can recommend a complete package that addresses both front and rear suspension needs for your specific 78 Series build and intended use.
Yes, a complete four-wheel alignment is mandatory after installing new rear leaf springs on your 78 Series LandCruiser. While rear leaf spring replacement primarily affects ride height rather than alignment angles, the change in rear ride height will alter your vehicle's overall stance and can affect front-end geometry, particularly castor angle. Additionally, any slight variation in spring centre positioning can affect rear axle tracking. Professional alignment ensures your vehicle tracks straight, prevents premature and uneven tyre wear, and maintains safe handling characteristics. The alignment should be performed after the 500km break-in period when springs have fully settled to their final ride height.
Absolutely — Toughdog manufactures these 78 Series rear leaf springs in multiple spring rate options to accommodate different constant load configurations. When ordering, you'll select the spring rate that matches your permanent accessory weight based on what your vehicle carries every day including drawer systems, dual batteries, long-range tanks, and installed equipment. It's critical to select spring rate based only on constant load, not occasional passengers, camping gear used a few times per year, or towing loads. Our team can help calculate your constant load and recommend the optimal spring rate to achieve the best balance of load support and ride comfort for your specific 78 Series setup.
These Toughdog rear leaf springs alone provide minimal lift (primarily load support and sag prevention) so they won't dramatically increase tyre clearance on their own. The 78 Series LandCruiser has relatively generous wheel arch clearance from factory, and most owners can fit 33-inch tyres with minimal modification. If your goal is to run significantly larger tyres such as 35-inch or bigger, you'll need a complete lift kit that includes front suspension lift components to match the rear and may require additional modifications including body lifts, wheel arch trimming, or diff breather relocation. Contact our team to discuss complete lift kit packages that will safely accommodate your target tyre size while maintaining proper suspension geometry and ride quality.
Toughdog rear leaf springs are backed by a comprehensive manufacturer's warranty that covers defects in materials and workmanship under normal use conditions. The specific warranty period and terms are provided with your purchase and registration of your Toughdog components. Warranty coverage requires professional installation with correct torque specifications, appropriate spring rate selection for your actual constant load, and normal use within the vehicle's GVM and load ratings. Warranty does not cover damage from overloading, improper installation, accident damage, or failure of related components. Keep your installation receipts and register your purchase to ensure full warranty protection and access to Toughdog's Australia-wide dealer support network.
Yes, when correctly specified for your constant load, Toughdog leaf springs deliver excellent daily driving comfort on sealed roads while providing the durability needed for off-road touring. The progressive multi-leaf design offers a comfortable unladen ride that firms up progressively as load increases, preventing harsh ride quality when empty. However, selecting a spring rate that's too heavy for your actual constant load will result in a noticeably firmer, less compliant ride on smooth roads. This is why accurate load assessment is critical — springs matched to your true constant weight will provide the best balance of load support and everyday comfort, making your 78 Series equally capable as a daily driver, long-distance tourer, and weekend off-roader without compromise.
Perfect upgrade for my work 78
Been running these Toughdog rear leaf springs on my 78 Series for about 6 months now and they've handled everything I've thrown at them. Carry tools and materials every day for work, plus regular trips down dusty mine site roads, and the ride quality is miles better than the factory springs that were sagging. Fitment was spot on and haven't had any issues whatsoever.(5)
Bulletproof Springs for Serious Outback Work
Been running these Toughdog rear leaf springs on my 78 Series for about 8 months now, including a pretty brutal Cape York trip and multiple Simpson crossings. The constant load rating handles my dual battery setup, long range tanks and recovery gear without the sag my old springs developed, and the ride quality on corrugations is noticeably better than expected. Fitment was spot-on with all factory mounts lining up perfectly, which saved hours of mucking about.(5)
Perfect upgrade for our loaded Troopy
These Toughdog rear leaf springs have completely transformed how our 78 Series handles when we're loaded up for family camping trips. The rear end no longer sags with the camper trailer hooked up and all our gear in the back, and the ride quality is actually better than stock even when empty. Fitment was spot-on and installation was straightforward. Well worth the investment for anyone who actually uses their Cruiser properly.(5)
Perfect Upgrade for My 78 Series Troopy
Had these Toughdog rear leaf springs fitted to my 78 Series about three months back and they've been brilliant for both highway touring and outback tracks. The ride quality is noticeably better than the old worn-out springs, especially when loaded up with camping gear and jerry cans. Fitment was spot-on and they've handled everything from corrugations to beach driving without any dramas.(5)
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