Toughdog heavy duty rear coil springs are purpose-matched to the Jeep Grand Cherokee ZJ (1993-1998) and ZG (1999-2004), sold as a pair for direct replacement of tired factory springs. Built with a heavier wire gauge than standard replacement coils, they hold correct rear ride height under constant load from bull bars, dual batteries, drawer systems or towbars, and resist the sag that causes rear-end squat over time. Australian buyers can check exact fitment for their build using our Grand Cherokee parts finder. Dispatched from Australian stock with Toughdog's manufacturer warranty and fitment support from our suspension team.
Browse all compatible suspension parts for your Zj using our parts finder.
| Make | Model | Series | Years | Notes |
|---|---|---|---|---|
| Jeep | Grand Cherokee | ZJ | 1993-1998 | Rear coil spring pair, all engine variants |
| Jeep | Grand Cherokee | ZG | 1999-2004 | Rear coil spring pair, all engine variants |
Not sure if this fits your vehicle? Contact our suspension experts or check our FAQ page.
Choosing the right rear spring comes down to what your Grand Cherokee carries day to day. A vehicle running a steel rear bar, drawer system, dual battery tray and towbar sits under constant load and needs a heavier-rated spring to hold ride height and geometry. If your rear end is closer to standard — no bar work, occasional light towing only — a lighter-rated replacement spring keeps ride quality softer. Common accessories that shift the required rate include rear bull bars, water tanks, drawer/fridge setups, long-range fuel tanks and permanently fitted towbars.
Fitting these rear coil springs is a straightforward job for an experienced DIY installer with a spring compressor, but we recommend professional fitment given the stored energy in a compressed coil spring. Wheel alignment is mandatory after installation — ride height changes affect camber and toe on the rear axle. We suggest a 500km bed-in period before final alignment to let the springs settle into their working height. If you're also correcting rear geometry at a new ride height, pair these springs with upgraded control arms for accurate axle location.
Toughdog has built its rear coil springs around real Australian conditions — corrugated tracks, high ambient temperatures and vehicles that carry gear for weeks at a time. Every spring in the range is backed by a manufacturer warranty and supplied with documentation through our store. Tradespeople and grey nomads alike run Toughdog because the springs hold their rate under sustained load rather than settling after a few thousand kilometres — view the full Toughdog range for matching front springs and shocks.
This pair suits Grand Cherokee ZJ/ZG owners running rear-mounted accessories — bull bars, drawer systems, dual battery setups or a permanently hitched van or trailer — who need the rear end to sit level and stay there. It's also a sensible fix for owners whose factory rear springs have sagged with age and kilometres. If your load varies significantly trip to trip, it's worth comparing against airbag suspension which lets you adjust support on the fly.
In stock in Australia and dispatched fast from our warehouse, with our team on hand to confirm fitment before you order. Browse our full lift kit range if you're planning a broader suspension upgrade alongside these springs.
New to Jeep suspension? Read our guide to common Jeep suspension problems and how to fix them.
These Toughdog rear coil springs are built specifically for the Grand Cherokee ZJ (1993-1998) and ZG (1999-2004). They bolt directly into the factory upper and lower spring seats with no cutting or modification required. If you're unsure which series your Grand Cherokee is, our team can confirm fitment from your VIN or build plate before you order.
These springs are designed as a heavy duty replacement to restore correct rear ride height under constant load, rather than a specific lift height product. Actual ride height once fitted depends on the load carried at the rear of your Grand Cherokee. For a defined lift height in inches, check our broader coil spring and lift kit range for raised-height options.
You get 2 x Toughdog heavy duty rear coil springs, one for each side, sold as a matched pair. Factory upper and lower isolators and mounting hardware are reused, so they're not included in the box. Rear shocks, bump stops and control arms are sold separately if you need to replace those as well.
Yes, this is exactly the application these heavy duty springs are built for. They're designed to carry the constant additional load a towbar and loaded rear end put on the Grand Cherokee's rear suspension, holding ride height instead of sagging over time. For heavier or variable towing loads, ask our team about pairing with upgraded rear shocks.
Not necessarily for a rear spring replacement at standard height, but if you're raising the rear end noticeably or fitting front lift components at the same time, upgraded control arms help correct axle geometry and driveline angles. We stock control arms suited to Grand Cherokee suspension upgrades if you need to correct alignment at a new ride height.
Yes. Any change to rear ride height affects rear camber and toe, so a wheel alignment is mandatory after installing these springs. We recommend allowing a 500km bed-in period first so the new springs settle to their working height before the final alignment is set.
Toughdog offers rear coil springs across a range of load ratings for the Grand Cherokee to suit different accessory loads, from lighter touring setups to heavier constant-load applications with bull bars and drawers. Tell our team what you're carrying — bar work, batteries, towbar — and we'll help you match the right rate before you order.
Because this product restores or maintains standard rear ride height rather than adding a defined lift, tyre clearance is largely unchanged from factory. If you're planning larger tyres, you'll likely need a dedicated lift kit rather than a load-focused spring replacement — our team can advise on options for your Grand Cherokee.
These springs are covered by Toughdog's manufacturer warranty against manufacturing defects. Warranty documentation is supplied with your order. If an issue comes up after fitment, contact our team directly and we'll help coordinate the warranty process with Toughdog.
Yes. These are heavy duty replacement springs designed to keep factory-style ride quality while carrying a constant rear load, so they suit daily driving as well as touring and towing use. Owners running rear accessories day to day will notice the rear end sits level and doesn't sag under normal use.
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