Nissan Patrol (1980-1985) MQ MK 9/1980-1985 Tough Dog BPN-008 Tough Dog Rear Leaf Spring
TD-BPN-008

Leaf springs represent one of the most enduring suspension designs in automotive history, maintaining their relevance particularly in commercial vehicles due to their exceptional load-bearing capabilities. Engineered 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 mitigating excessive sag and enhancing overall performance. The manufacturing process is meticulously designed to maximize durability, offering robust corrosion resistance and sag prevention, ensuring longevity in demanding environments.

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 guarantee extended service life. A military wrap is standard across all part numbers, and each spring is accurately heat-treated to meet rigorous performance standards.

Constructed from high-grade spring steel, these leaf springs feature anti-friction pads in most applications, and are pre-stressed to maintain optimal ride height. Each unit undergoes load rate testing to ensure reliability and performance under load.

For vehicles equipped with additional accessories, Tough Dog offers various spring rates to accommodate constant load scenarios. The approximate raised height achieved with these springs ranges from 30-40mm, with specific models designed for different load capacities: BPN-008 for light loads (0-300kg) and BPN-008H for constant loads (300kg).

It is advisable to pair 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 you are viewing.

Features of Tough Dog Leaf Springs

• Designed in Australia
• Progressive rate leaf springs
• Primary and secondary stage leaves
• Prevents excessive sag under load
• 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

• BPN-008 - 0-300kg Light Load
• BPN-008H - 300kg Constant Load

Important Notes

• Recommend fitting long travel shock absorbers with raised springs
• Constant Load refers to weight that remains in/on the vehicle
• Fixed accessories considered as 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: 30-40mm

BPN-008 - 0-300kg Light Load
BPN-008H - 300kg Constant Load

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.