Toyota 4Runner (1985-1989) IFS (Leaf Rear) 11/1985-1989 Tough Dog T46L-LH Tough Dog Rear Leaf Spring
TD-T46L-LH

Leaf springs represent one of the most enduring suspension designs in automotive engineering, maintaining their relevance in commercial vehicles due to their exceptional load-bearing capabilities. Designed in Australia, Tough Dog progressive rate leaf springs incorporate both primary and secondary stage leaves, ensuring that the vehicle's ride quality remains uncompromised under varying load conditions.

As the spring compresses under load, the secondary stage engages, effectively preventing excessive sag and maintaining optimal ride height. The manufacturing process is meticulously engineered to maximize durability, offering robust corrosion resistance and sag prevention. Tough Dog provides a selection of up to three spring rate options for most applications, allowing for tailored performance to suit specific vehicle setups.

These leaf springs are precision mandrel and die-formed, oil quenched, hardened, and tempered to ensure longevity and resilience. A military wrap is standard across all part numbers, enhancing structural integrity. Each spring is accurately heat-treated and crafted from high-grade spring steel, with anti-friction pads included in most applications to reduce wear and enhance performance. Additionally, the springs are pre-stressed to maintain ride height and are load rate tested to ensure reliability.

For vehicles equipped with additional accessories, Tough Dog offers various spring rates to accommodate constant load carrying. The approximate raised height provided by these springs ranges from 40-50mm, with specific models designed for different load capacities: T46C-LH and T46C-RH for light loads (0-300kg) on passenger and driver sides respectively, and T46L-LH and T46L-RH for constant loads (300kg) on the same sides.

When selecting springs, it is advisable to choose one of each side (LH and RH) to create a complete pair. It is also recommended to pair these raised springs with long travel shock absorbers for optimal performance. Constant load refers to weight that is permanently added to the vehicle, such as fixed accessories like canopies, steel trays, draw systems, fridges, toolboxes, rear bars, or spare wheel carriers. Selecting the appropriate spring rate is crucial for achieving the best results in load carrying capacity, ride quality, and overall ride height.

Please note that images provided are for representation purposes only and may not accurately depict the specific part number being viewed.

Leaf Spring Features

• Designed in Australia
• Progressive rate leaf springs
• Primary and secondary stage leaves
• Prevents excessive sag
• Maximum life and corrosion protection
• Up to 3 spring rate options
• Precision mandrel & die-formed
• Oil quenched, hardened & tempered
• Military wrap standard
• Accurately heat-treated
• Manufactured from high grade spring steel
• Anti-friction pads in most applications
• Pre-stressed to maintain ride height
• Diamond cut ends
• Load rate tested

Spring Rate Options

• T46C-LH - 0-300kg Light Load Passenger Side
• T46C-RH - 0-300kg Light Load Driver Side
• T46L-LH - 300kg Constant Load Passenger Side
• T46L-RH - 300kg Constant Load Driver Side

Important Notes

• LH and RH noted select one of each to create a pair
• Recommend fitting long travel shock absorbers with raised springs
• Constant Load refers to weight that remains in/on the vehicle
• Fixed accessories considered Constant Load
• Select relevant spring rate for best results

Select the most appropriate spring rate option to suit the fixed accessories on the vehicle:

Approximate Lift Height: 40-50mm

T46C-LH - 0-300kg Light Load Passenger Side
T46C-RH - 0-300kg Light Load Driver Side
T46L-LH - 300kg Constant Load Passenger Side
T46L-RH - 300kg Constant Load Driver Side

Sold Individually.
Where LH and RH are noted select one of each to create a pair.

High quality 4x4 suspension upgrades proudly sold by PPD Performance.

Shipping Policy

PPD Performance offer custom built suspension solutions, with unique adjustability and performance.

These kits are assembled to order to suit your requirements, with an average lead time that can vary between 1-3 days.

If you need a specific eta, please contact us before ordering and we will be sure to assist you.