Reviewed by Andrew, 4WD Suspension fitment team
Tough Dog front coil springs for the Toyota Fortuner, sold per pair. Pick OE height (2004-15 only) or 40mm lift, rated for your bar and winch combination - the same spring carries a different rating on each generation, so check the option labels.
Tough Dog coils are designed and made in Australia from micro-alloyed spring steel – shot-peened, scragged and load-tested, and hot-formed on precision mandrels so the spring keeps its height and rate after years of heavy loading.
Pick the rate for the weight the vehicle actually carries, not the weight you'd like it to carry – and count only permanent accessories and loads (bar, winch, drawers, long-range tank) when choosing. A spring that's too firm for an unloaded vehicle rides worse than the factory item; one that's too soft sags the moment you load up.
Fit springs in pairs per axle, and book a wheel alignment after any change in ride height. It's also worth checking brake-line slack and bump-stop condition while the suspension is apart.
Doing the whole vehicle at once? We also stock the matching assembled Front Struts and rear Shock Absorbers for the Toyota Fortuner & Hilux N70.
Match them with Tough Dog front struts.
| Make | Model | Series | Years |
|---|---|---|---|
| Toyota | Fortuner | KUN/GGN | 2004 - 12/2015 |
| Toyota | Fortuner | GUN156 | 2015 - On |
| Toyota | Hilux | N70 KUN26, GGN25R | 04/2005 - 2015 |
Choose the spring that matches what is permanently fitted to the vehicle, such as a steel bull bar or a bar and winch. The heavier option carries that extra weight at the intended ride height; fitted to a vehicle without the accessories it will sit high and ride firm.
| Part number | Lift | Load rating | Suits / notes |
|---|---|---|---|
| TDC974S | - | - | OE Height - 2004-15 Only |
| TDC974 | 40 mm | - | 2004-15: Up to Steel Bar / 2015-On: No Accessories |
| TDC983 | 40 mm | - | 2015-On: With Steel Bar |
| TDC974H | 40 mm | - | With Steel Bar & Winch |
Front coil springs are fitted with the strut removed and the spring compressed to swap it onto the strut, so this is a job for a workshop or an experienced fitter with a proper spring compressor. Fit both sides, torque the strut top and lower mounts to spec, then have a wheel alignment done, which is essential after any change in front ride height. 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 Hilux suspension? Read our Hilux suspension problems guide.
| Specification | Detail |
|---|---|
| Brand | Tough Dog |
| Type | Front coil springs |
| Position | Front axle |
| Sold as | Pair (both sides) |
| Vehicle | Toyota Fortuner & Hilux N70 |
| Lift options | 40 mm |
| Part numbers | TDC974S, TDC974, TDC983, TDC974H |
| Construction | Designed and made in Australia from micro-alloyed spring steel; shot-peened, scragged and load-tested |
Load ratings refer to permanent extra weight over the axle. Springs do not change the vehicle's GVM or towing capacity.
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?
Options marked 2004-15 suit the Fortuner 2004-12/2015 AND the Hilux N70 (04/2005-2015) - they share the same front end. Options marked 2015-On suit the Fortuner GUN156 only.
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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