Reviewed by Andrew, 4WD Suspension fitment team
Tough Dog raised rear leaf springs for the Nissan Navara D40 (12/2005 - 2015, all engines), approximately 40mm of lift, sold per pair. Select 0-300kg for mixed use, Constant 300kg or Constant 500kg for permanent loads.
Add U-bolts, greasable shackles and pins, urethane bushes or Air Assist bellows airbags from the options below.
These are progressive-rate packs – every leaf sits in contact along its full length with the leaf above, which is what keeps the unladen ride tolerable on a working ute.
Two-stage packs carry a lighter primary stage for everyday ride quality, with heavier second-stage leaves that only come into play as the load goes on – that's what stops the rear sagging with a canopy, tools or a camper on the back. Choose the rating by the constant load the vehicle carries, counting only permanent weight.
The matching U-bolts, greasable shackles and pins, and bush kits are available from the option dropdowns on this page – if the originals have been on since new, replace them while the pack is out rather than reusing stretched U-bolts.
Doing the whole vehicle at once? We also stock the matching front Coil Springs and assembled Front Struts for the Nissan Navara D40 2005-2015.
Pair with Tough Dog rear shocks.
| Make | Model | Series | Years |
|---|---|---|---|
| Nissan | Navara | D40 - 2.5L, 4.0L | 12/2005 - 2015 |
| Nissan | Navara | D40 - 3.0L STX-550 V6 | 2011 - 2015 |
Choose the load rating for the weight the vehicle carries most of the time, counting only permanent fitments such as a bar, winch, canopy or drawers. A heavier rating than you need rides firm when unloaded; a lighter one sags once the gear goes in.
| Part number | Lift | Load rating | Suits / notes |
|---|---|---|---|
| T85C | 40 mm | 0-300 kg | - |
| T85L | 40 mm | Constant 300 kg | - |
| T85LL | 40 mm | Constant 500 kg | - |
Leaf springs are replaced as a pair with the axle supported, the U-bolts removed and the spring unbolted from the front hanger and rear shackle. Fit new U-bolts, and replace worn shackle bushes and pins at the same time. Torque U-bolts to spec and re-check them after the first few hundred kilometres. Raised springs need shock absorbers with the correct extended length for the new ride height. In most states a suspension lift of up to 50 mm is allowed without certification under VSB14; larger lifts can require engineering approval, so check the rules for your state.
Last updated: 10 September 2026
Genuine Tough Dog suspension from an authorised Australian dealer.
New to Navara suspension? Read our Navara suspension problems guide.
| Specification | Detail |
|---|---|
| Brand | Tough Dog |
| Type | Rear leaf springs |
| Position | Rear axle |
| Sold as | Pair (both sides) |
| Vehicle | Nissan Navara D40 2005-2015 |
| Lift options | 40 mm |
| Load ratings | 0-300 kg, Constant 300 kg, Constant 500 kg |
| Part numbers | T85C, T85L, T85LL |
| Construction | Designed and made in Australia from micro-alloyed spring steel; shot-peened, scragged and load-tested |
| Fitting hardware | New U-bolts recommended; bush and shackle kits available as options |
Load ratings refer to permanent extra weight over the axle. Springs do not change the vehicle's GVM or towing capacity.
0-300kg (T85C) suits daily driving with variable loads. CONSTANT 300kg (T85L) and CONSTANT 500kg (T85LL) are for weight that never leaves the ute. Constant-load springs ride firm when empty.
These suit the following applications: Nissan Navara D40 - 2.5L, 4.0L 12/2005 - 2015; Nissan Navara D40 - 3.0L STX-550 V6 2011 - 2015. Check your build date and variant against the fitment table on this page – if you're not certain, contact us with your rego or VIN details and we'll confirm fitment before you order.
The listed price covers both sides – always replace left and right together so the axle is evenly damped and sprung. It's a bolt-in job for a competent home mechanic or any workshop; check bushes, mounts and brake-line slack while everything is apart.
A moderate suspension lift is generally acceptable in most Australian states, but the allowed total lift and whether certification is needed differ between states and change over time – so always confirm with your state’s transport authority before modifying. Our guide explains how the rules work state by state: are lift kits legal in Australia?
Yes. The price covers both Tough Dog springs, one for each side.
If you are changing ride height, yes. Shocks are built for a specific travel range, and a lift moves the axle outside the factory shock's range. If you are replacing springs at standard height, existing shocks in good condition can stay.
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