Mazda BT-50 4WD (2011-2020) UP UR 11/11-08/20 Tough Dog FS369L Tough Dog Rear Leaf Spring
TD-FS369L

Leaf springs represent one of the most enduring suspension designs in automotive history, maintaining their relevance in commercial vehicles due to their exceptional load-bearing capabilities. Engineered in Australia, these 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 designed to maximize durability, offering robust corrosion resistance and sag prevention, ensuring longevity in demanding environments.

These leaf springs are available in up to three distinct spring rate options for most applications, providing the flexibility to select the ideal spring rate tailored to your vehicle's specific setup. Each spring is precision mandrel and die-formed, oil quenched, hardened, and tempered to guarantee extended service life.

Standard features include military wrap across all part numbers, accurate heat treatment, and construction from high-grade spring steel. Many applications also incorporate anti-friction pads to enhance performance. The springs are pre-stressed to maintain ride height and are rigorously load rate tested to ensure reliability.

For vehicles equipped with additional accessories, various spring rates are available to accommodate constant load scenarios. The approximate raised height achieved with these springs ranges from 40-50mm, with specific models designed for different load capacities: FS369C for light loads (0-300kg), FS369L for constant loads (300kg), and FS369LL for heavier constant loads (500kg).

It is advisable to pair these raised springs with long travel shock absorbers to optimize 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 balance of load carrying capacity, ride quality, and ride height.

Please note that images provided are for representation purposes only and may not accurately depict 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

• FS369C - 0-300kg Light Load
• FS369L - 300kg Constant Load
• FS369LL - 500kg 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 as 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: 40-50mm

FS369C - 0-300kg Light Load
FS369L - 300kg Constant Load
FS369LL - 500kg 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.