Mitsubishi Triton 4WD (1996-2006) MK 10/1996-2006 Tough Dog FS021H Tough Dog Rear Leaf Spring
TD-FS021H

Leaf springs represent one of the most enduring suspension designs in automotive engineering, maintaining their relevance particularly in commercial vehicles due to their exceptional load-bearing capabilities.

Engineered in Australia, Tough Dog progressive rate leaf springs incorporate a sophisticated design featuring both primary and secondary stage leaves. This dual-stage configuration ensures that the vehicle's ride quality remains uncompromised under varying load conditions. As the spring compresses, the secondary stage engages to mitigate excessive sag, thereby enhancing overall performance.

The manufacturing process of these leaf springs is meticulously executed to guarantee maximum durability, corrosion resistance, and sag prevention. Tough Dog provides a selection of up to three spring rate options for most applications, allowing for tailored solutions that best fit your vehicle's specific setup.

Each spring is precision mandrel and die-formed, oil quenched, hardened, and tempered to ensure longevity and resilience. A military wrap is standard across all part numbers, and the springs are accurately heat-treated to optimize performance. Constructed from high-grade spring steel, these leaf springs also feature anti-friction pads in most applications, and are pre-stressed to maintain optimal ride height.

For those with additional accessories fitted to their vehicles, Tough Dog offers various spring rates to accommodate constant load carrying. This is particularly beneficial for vehicles equipped with fixed accessories such as canopies, steel trays, draw systems, fridges, toolboxes, rear bars, or spare wheel carriers.

Approximate raised height for these leaf springs ranges from 30-40mm, with specific models designed for different load capacities: FS021 for light loads (0-300kg) and FS021H for constant loads (300kg). It is advisable to pair these raised springs with long travel shock absorbers to achieve optimal performance.

Choosing the appropriate spring rate is crucial for achieving the best results in load carrying, ride quality, and ride height. Please note that images provided are for representation purposes only and may not correspond to the specific part number being viewed.

Features of Tough Dog Leaf Springs

• Progressive rate design with primary and secondary stage leaves
• Prevents excessive sag under load
• Maximum life and corrosion protection
• Up to 3 spring rate options available
• Precision mandrel & die-formed
• Oil quenched, hardened & tempered for longevity
• Military wrap standard across all part numbers
• 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

• FS021 - 0-300kg Light Load
• FS021H - 300kg Constant Load

Important Notes

• Recommended to fit long travel shock absorbers with raised springs
• Constant Load refers to weight that remains in/on the vehicle at all times
• Fixed accessories considered Constant Load include canopies, steel trays, draw systems, fridges, tool boxes, rear bars, or spare wheel carriers
• Select the most relevant spring rate for optimal load carrying, ride quality, and ride height

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

Approximate Lift Height: 30-40mm

FS021 - 0-300kg Light Load
FS021H - 300kg Constant Load

Sold Individually.

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.