Toughdog Rear Coil Springs for Jeep JK Wrangler deliver race-proven heavy-duty performance engineered for Australian conditions — offering superior load-carrying capacity, enhanced ride height, and the durability that's made Toughdog Australia's most trusted suspension brand. Designed specifically for the JK Wrangler platform, these premium coil springs integrate seamlessly with OEM and aftermarket suspension setups, providing the foundation for improved handling, towing stability, and off-road capability. Backed by Australian engineering, rigorous outback testing, and comprehensive manufacturer warranty, these springs are in stock now with fast dispatch Australia-wide.
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| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Jeep | Wrangler | JK | 2007-2018 | 3.6L V6 Petrol / 2.8L Diesel |
| Jeep | Wrangler Unlimited | JK | 2007-2018 | 3.6L V6 Petrol / 2.8L Diesel |
These coil springs suit both 2-door and 4-door JK Wrangler models. Not sure which spring rate is right for your setup? Contact our suspension experts for personalised advice or browse all suspension parts for the Jeep Wrangler to build your complete upgrade package.
Selecting the correct spring rate is critical to achieving optimal ride quality, load support, and suspension performance. Your spring rate choice should be based exclusively on constant accessory load — the weight permanently fitted to your Jeep JK Wrangler, not occasional cargo or towing loads. Constant rear accessories include rear bars, spare wheel carriers, heavy-duty rear bumpers, dual swing-out Jerry can holders, awning systems, rear drawer systems, and permanent camping storage. Occasional loads like passengers, camping gear, and towing should not influence your spring rate selection, as over-springing will result in harsh ride quality, reduced traction, and premature wear to other suspension components.
Professional installation by a qualified 4WD suspension specialist is strongly recommended to ensure correct fitment, safety, and warranty compliance. Installation requires proper spring compressor tools, torque specifications, and safety procedures. A full four-wheel alignment is mandatory after installing rear coil springs to ensure correct camber, caster, and toe settings — preventing premature tyre wear and maintaining predictable handling characteristics. Allow a 500-kilometre break-in period for springs to settle and reach their final ride height before final assessment. When lifting the rear of your JK Wrangler, consider pairing these springs with upgraded control arms to correct drive angles and maintain optimal suspension geometry.
Toughdog has earned its reputation as Australia's number one suspension brand through decades of proven performance across the harshest outback conditions, from the Simpson Desert to Cape York. Every Toughdog component undergoes rigorous real-world testing by Australian engineers who understand the unique demands of touring, towing, and daily driving in this country. Backed by comprehensive manufacturer warranty and trusted by tradespeople, grey nomads, and serious tourers nationwide, the complete Toughdog suspension range delivers unmatched value, durability, and performance for Australian 4WD enthusiasts.
These Toughdog rear coil springs are ideal for Jeep JK Wrangler owners who've added rear accessories and noticed sagging ride height, compromised handling, or reduced load capacity. Perfect for weekend tourers carrying camping gear, tradespeople with toolboxes and equipment, caravan towers seeking improved stability, and off-road enthusiasts building capable expedition rigs. If you regularly carry heavy loads or tow trailers, consider supplementing these springs with airbag suspension for on-demand adjustability and maximum load versatility without compromising unladen ride quality.
Upgrade your Jeep JK Wrangler's rear suspension with genuine Toughdog quality — engineered for Australian conditions, stocked locally for fast dispatch, and supported by our expert technical team. Whether you're building a complete suspension transformation or simply restoring factory performance, we have the components and knowledge to help. Browse our full lift kit range to discover complete suspension solutions for your Wrangler, or contact our team for personalised advice on building the perfect setup for your touring and driving needs.
These Toughdog rear coil springs are specifically engineered to fit both 2-door and 4-door Jeep Wrangler JK models from 2007 to 2018, including Unlimited variants. They suit both the 3.6L V6 petrol and 2.8L diesel engines. The springs are designed as direct OEM replacements with no modification required for installation. If you have aftermarket suspension components already fitted or are unsure about compatibility with your specific build, contact our technical team for confirmation before ordering.
The amount of lift provided depends on your current vehicle condition and the spring rate selected. If your JK Wrangler is sitting below factory ride height due to accessory weight, these springs will restore factory height or provide a subtle lift of 25-40mm. The actual lift achieved varies based on constant load — vehicles with heavier rear accessories will sit lower than lightly-loaded vehicles using the same spring rate. For accurate lift expectations specific to your setup, provide details of your rear accessories and we can recommend the ideal spring rate for your application.
This kit includes a matched pair of Toughdog heavy-duty rear coil springs and vehicle-specific spring isolators or spacers. The springs are designed for direct replacement of factory coils and are compatible with OEM and aftermarket shock absorbers. Front coil springs, shock absorbers, extended brake lines, control arms, and other suspension components are sold separately. Installation hardware such as spring compressors and fasteners may be required depending on your specific vehicle configuration and existing suspension setup.
Yes, Toughdog rear coil springs are engineered to handle the increased demands of towing caravans, camper trailers, and boat trailers when the correct spring rate is selected. They significantly reduce rear-end squat under tow ball weight, improving steering response, headlight aim, and overall vehicle stability. However, spring rate selection should be based on constant accessory load only — not towing weight. For maximum towing versatility and the ability to adjust load support on-demand, consider adding airbag suspension which works in conjunction with these coil springs for ultimate load-carrying flexibility.
Control arm upgrades are not strictly required for spring replacement that maintains or slightly increases factory ride height. However, if you're achieving a lift over 50mm or installing these springs as part of a complete lift kit, upgraded adjustable control arms are strongly recommended to correct castor angles, maintain proper CV axle geometry, and prevent premature wear on bushes and joints. Adjustable control arms allow precise suspension geometry tuning for optimal handling, tyre wear, and off-road articulation after lifting your JK Wrangler.
Yes, a full four-wheel alignment is mandatory after installing rear coil springs on your Jeep JK Wrangler. Changing ride height affects camber, toe, and overall suspension geometry, which directly impacts tyre wear, handling characteristics, and vehicle stability. A qualified alignment technician will adjust all suspension angles to manufacturer specifications or aftermarket recommendations to ensure your Wrangler tracks straight, handles predictably, and wears tyres evenly. Skipping alignment can lead to premature tyre wear costing hundreds of dollars and compromised safety on and off-road.
Spring rate selection must be based exclusively on constant accessory load — the permanent weight fitted to your vehicle including rear bars, spare wheel carriers, heavy bumpers, drawer systems, and touring equipment. Do not factor in occasional loads like passengers, camping gear, or towing weight when selecting spring rates. Start by listing all permanently fitted rear accessories and their weights, then contact our team with this information for personalised spring rate recommendations. Selecting springs that are too heavy will result in harsh ride quality, reduced traction, and potential damage to other suspension components.
Installing rear coil springs alone provides a modest lift that may accommodate slightly larger tyres, but tyre clearance is primarily determined by total vehicle lift, wheel offset, and front suspension height. Most JK Wranglers require a complete front and rear lift kit to run significantly larger tyres without rubbing on suspension components, body panels, or at full articulation. If your goal is to fit larger tyres, we recommend a complete suspension upgrade including front and rear springs, shock absorbers, and potentially control arms for proper geometry and maximum clearance.
Toughdog rear coil springs are backed by a comprehensive manufacturer warranty covering defects in materials and workmanship. The warranty period and specific terms are provided with your purchase and cover normal recreational and commercial use under Australian conditions. Warranty does not cover damage from incorrect installation, overloading beyond spring rating, collision damage, or modification. Keep your proof of purchase and installation receipts to ensure warranty coverage. Our team can assist with any warranty claims or technical support throughout the life of your Toughdog suspension components.
Absolutely — Toughdog rear coil springs are engineered to excel in daily driving, highway cruising, and long-distance touring, not just off-road use. When the correct spring rate is selected for your constant load, these springs deliver a comfortable, controlled ride on sealed roads while maintaining the capability for outback touring and recreational off-roading. The progressive spring rate design ensures comfortable unladen ride quality for daily commuting while providing the support needed for loaded touring and weekend adventures. Thousands of Australian Wrangler owners rely on Toughdog suspension for balanced all-round performance across every driving scenario.
Perfect for Long Outback Trips
Been running these Toughdog coil springs on my JK for about six months now, including a three-week Cape York trip with full camping gear and extra fuel. The ride quality is noticeably better than stock even when loaded down, and they handled the corrugations on the Telegraph Track without any dramas. Really impressed with how they've maintained their height and haven't sagged at all despite the constant heavy load.(5)
Perfect Upgrade for Our Family Camping Rig
These rear coil springs have completely transformed our JK Wrangler for our regular camping trips down the coast and out bush. The ride quality is noticeably smoother even when loaded up with all the family gear, swags, and the fridge. Installation was straightforward and they've handled everything from beach tracks to rocky fire trails without any issues. Well worth the investment for anyone doing regular touring with a loaded rig.(5)
Perfect Upgrade for Our Loaded Wrangler
These rear coil springs have completely transformed how our JK handles when we're loaded up with camping gear and the kids' stuff for weekend trips. The ride quality is noticeably better than the old saggy springs, and we're sitting level again even with the rooftop tent and full water tanks. Fitment was spot on and installation was straightforward. Really happy with the value for money compared to some of the other options out there.(5)
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