Reviewed by Andrew, 4WD Suspension fitment team
Tough Dog 50mm raised rear leaf springs for the Toyota LandCruiser 78/79 Series, sold per pair. The same spring carries a different constant rating on the single cab (10/1999-on) vs the heavier dual cab (2012-on) - check the option labels. Add the fitment hardware below; the FS781XHD requires the 290mm TDUB-038 U-bolts and the TDSB-012 rear sway bar.
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 TD-R Remote Reservoir Rear Shocks and TD-R Front Coil Springs for the Toyota LandCruiser 78/79 Series.
Match them with Tough Dog rear shocks.
| Make | Model | Series | Years |
|---|---|---|---|
| Toyota | LandCruiser | 78, 79 Series Single Cab (4.5L V8, 4.2L 6cyl, 2.8L 4cyl) | 10/1999 - On |
| Toyota | LandCruiser | 78, 79 Series Dual Cab (4.5L V8, 2.8L 4cyl) | 2012 - On |
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 |
|---|---|---|---|
| BP-019 | 50 mm | 0-200 kg | Single Cab Only |
| FS781 | 50 mm | - | Single: C400 / Dual: C300 |
| FS781HM | 50 mm | - | Single: C600 / Dual: C500 |
| FS781XHD | 50 mm | - | Single: C900 / Dual: C800 |
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 LandCruiser 79 Series suspension? Read our LandCruiser 79 Series suspension problems guide.
| Specification | Detail |
|---|---|
| Brand | Tough Dog |
| Type | Rear leaf springs |
| Position | Rear axle |
| Sold as | Pair (both sides) |
| Vehicle | Toyota LandCruiser 78/79 Series |
| Lift options | 50 mm |
| Load ratings | 0-200 kg |
| Part numbers | BP-019, FS781, FS781HM, FS781XHD |
| 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.
These suit the following applications: Toyota LandCruiser 78, 79 Series Single Cab (4.5L V8, 4.2L 6cyl, 2.8L 4cyl) 10/1999 - On; Toyota LandCruiser 78, 79 Series Dual Cab (4.5L V8, 2.8L 4cyl) 2012 - On. 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.
V8 models with greasable pins & shackles use TDUK-048. Utes before 06/2009 with standard pins & shackles use TDUK-048/14; Troop Carriers before 06/2009 with standard pins & shackles use TDUK-048/18. Pick the matching add-on below.
The TDSP-015 handbrake relocation bracket must be fitted with BMX or TDR rear shocks. The TDSP-014 brake bias bracket is required on vehicles BEFORE 01/2017 only.
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.
Pick the rating for the weight the vehicle carries most of the time, counting only permanent fitments. Options on this listing: 0-200 kg. A '0-300 kg' or light rating suits a mostly unloaded vehicle; 'Constant' ratings suit a vehicle that always carries that weight, such as a canopy, drawers and a fridge.
The options on this listing are: 50 mm. Lift is measured at ride height with the vehicle's normal load. Raised springs need matching shock absorbers with the correct extended length.
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