Tough Dog 50mm Suspension Lift Kit – Jeep Wrangler JK 4-Door Unlimited LWB (2007–2018) | Advanced 4x4

Tough Dog Jeep Wrangler JK 4-Door Unlimited LWB (2007–2018) Complete 50mm Suspension Lift Kit

The Tough Dog Jeep Wrangler JK 4-Door (Unlimited) 50mm Suspension Kit is the definitive choice for the family-sized adventurer. The longer wheelbase (LWB) of the 4-door JK requires specific spring rates to handle the increased chassis weight and cargo capacity — and this kit delivers exactly that. It eliminates the factory “squat” under load, provides the essential ground clearance needed to prevent belly-dragging on technical obstacles, and transforms the Unlimited into a composed, capable overland machine.

Built with 41mm Bore Foam Cell Shocks specifically valved to control the rebound dynamics of the 4-door chassis, this kit delivers a smooth, predictable ride on the highway and exceptional fade-free durability in the dunes, the bush, or on corrugated South African gravel roads.

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🔧 Kit Components & Technical Specs

• Lift Height: 50mm (approximately 2 inches)
• Front Shocks: 2x 41mm Bore Foam Cell Shock Absorbers (optional: adjustable units)
• Rear Shocks: 2x 41mm Bore Foam Cell Shock Absorbers (optional: adjustable units)
• Front Springs: Heavy-duty Coil Springs — available for No Bar, Steel Bullbar, or Winch setups
• Rear Springs: LWB-specific Coil Springs — Comfort or Constant Load options (ideal for drawer systems and towing)
• Brake Line Relocation Brackets
• Extended Sway Bar Links (where required)
• Bump Stop Extensions
• Approx. Shipping Weight: 42kg – 50kg
• Package Dimensions (L×W×H): 900mm × 450mm × 300mm
• SKU: TD-JK-LWB-KT (configuration dependent)

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🚗 Why Upgrade Your 4-Door JK Unlimited?

The 4-door JK Unlimited is the ultimate family tourer — but its longer wheelbase makes its break-over angle vulnerable on technical terrain, and the factory suspension is notoriously soft under load. A 50mm Tough Dog lift is the sweet spot for this platform: it significantly improves off-road capability while actually enhancing on-road handling by reducing the soft body roll common in stock Jeeps.

• ✅ 50mm lift — improved break-over angle and ground clearance for technical trails and obstacles
• ✅ Eliminates factory squat — LWB-specific spring rates handle full passenger and cargo loads without sagging
• ✅ Reduces body roll — firmer spring rates improve on-road composure and cornering confidence
• ✅ LWB-specific rear coil springs — rated for the 4-door’s greater chassis weight, not shared with the 2-door SWB
• ✅ Foam Cell shocks valved for LWB rebound — smooth, predictable damping tuned for the Unlimited’s dynamics
• ✅ Extended sway bar links included — maintains correct suspension geometry at full lift height
• ✅ Brake line relocation & bump stop extensions — all safety-critical hardware addressed in the kit

Tip: An Adjustable Front Panhard Rod (Track Bar) is strongly recommended at 50mm lift to re-centre the front axle and eliminate steering pull. Ask our team for details and pricing.

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🛡️ Warranty & Fitment Requirements

This kit includes a 4-Year / Unlimited Kilometre Recreational Warranty — strictly activated through professional installation.

• Approved Fitment: Advanced 4x4 Branch in Strand, any authorised Tough Dog fitment centre, or an RMI-accredited workshop
• Warranty Integrity: Must be fitted by an RMI-approved facility with the odometer reading recorded on the fitment invoice
• Price Excludes: Fitment and wheel alignment. Contact us to book your installation at our Strand branch

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⭐ Why Choose Tough Dog for Your JK Unlimited?

Tough Dog is a recognised Second Stage Manufacturer (SSM), with components certified to handle increased Gross Vehicle Mass (GVM) without compromising roadworthiness or legal compliance. Their JK 4-Door kit features LWB-specific spring rates and shock valving tuned for the Unlimited’s greater mass and rebound characteristics — a distinct specification from the 2-door SWB kit.

At Advanced 4x4, we stock the full Tough Dog Wrangler JK range and can advise on adjustable Panhard rod fitment, optional adjustable shocks, and installation bookings at our Strand RMI workshop.

⏳ Lead Time: Please allow 14 business days for production/sourcing if stock is not immediately available.