Tough Dog 2 Inch Lift Kit for Holden Colorado RG 2012+ — Complete Suspension

This Tough Dog kit delivers a 50mm (2 inch) lift across both front and rear suspension when measured at standard kerb weight. The actual lift height may vary slightly depending on your chosen spring rates and constant accessory load fitted to the vehicle. With this 50mm lift, most Colorado RG owners can comfortably fit 265/70R17 or 265/65R18 tyres (approximately 32 inches diameter) without any body modifications or trimming. Some owners report fitting up to 285/70R17 (33 inch) tyres with minor guard trimming and appropriate wheel offset, though clearance will depend on your specific wheel and suspension setup under full compression and articulation.

This is a comprehensive front and rear suspension package that includes everything needed for installation: two front strut assemblies with integrated foam cell shock technology, two front raised coil springs in your selected load rating, two rear multi-leaf spring packs in your chosen rate, two rear shock absorbers, a complete rear U-bolt kit for leaf spring mounting, and a polyurethane rear leaf spring bush kit. All necessary mounting hardware and detailed fitting instructions are included. The only items not included are upper control arms (factory items are typically reused unless upgraded separately) and wheel alignment service, which is mandatory after installation and must be performed by your installer.

Yes, this Tough Dog kit is excellent for towing applications when you select the appropriate rear spring rate to match your constant tongue weight and vehicle accessories. The heavy-duty rear leaf springs and foam cell shock absorbers are specifically designed to eliminate rear-end sag when towing at or near your Colorado's rated towing capacity of 3500kg. The increased spring rates maintain proper suspension geometry and headlight alignment under load, while the larger bore shocks provide fade-resistant damping control on long highway journeys. For maximum towing versatility, many Colorado owners pair this lift kit with supplementary airbag suspension, which allows you to fine-tune rear ride height and stiffness based on varying trailer weights and load conditions.

While this 50mm lift kit can be installed using factory control arms, many experienced Colorado RG owners and installers recommend upgrading to heavy-duty aftermarket upper control arms at the time of lift kit installation. The factory ball joints can experience accelerated wear when suspension geometry is altered by lifting, and upgraded control arms typically feature larger diameter ball joints, replaceable bushings, and improved castor adjustment range. Upgraded control arms also make wheel alignment easier and provide longer service life in harsh off-road conditions. If you're planning serious touring, frequent off-road use, or carrying heavy constant loads, investing in quality control arms during your lift kit installation will provide better long-term value and reduce future maintenance requirements.

Yes, a full four-wheel alignment is absolutely mandatory after installing any lift kit on your Holden Colorado RG and should never be considered optional. Lifting the suspension alters the factory steering and suspension geometry, affecting camber, castor, and toe angles across both front and rear axles. Without proper alignment, you'll experience rapid and uneven tyre wear, poor steering response, vehicle pull to one side, and potentially unsafe handling characteristics especially during emergency manoeuvres. Your installer should perform the alignment immediately after kit installation, and many experts recommend a follow-up alignment check after the initial 500km break-in period once springs have fully settled and components have bedded in to their operating positions.

Spring rate selection is based exclusively on your constant accessory load — the combined weight of permanently fitted accessories that remain on your vehicle at all times. For the front, calculate the weight of your bull bar, winch, driving lights, upgraded intercooler, and any auxiliary batteries or dual battery systems. For the rear, include your steel tray or canopy, drawer systems, dual spare wheel carriers, long range fuel tanks, roof racks, and any permanently mounted equipment. Do not include variable loads like camping gear, tools, water, or passengers that are added and removed between trips. When ordering, you'll be prompted to select front and rear spring rates in kilograms — choose the rating closest to your calculated constant load. If you're between ratings, round up slightly rather than down to prevent sagging, but avoid selecting significantly heavier rates than needed as this creates harsh ride quality and can damage other suspension components.

With the 50mm lift provided by this Tough Dog kit, most Holden Colorado RG owners can fit 265/70R17 tyres (approximately 31.6 inches diameter) with completely stock guards and no modifications required. Many owners successfully fit 265/75R16 or 285/65R18 sizes (around 32 inches) with careful wheel offset selection and potentially minor guard liner trimming at full lock. For those wanting to maximise tyre size, 285/70R17 (33 inch diameter) is achievable with guard trimming, appropriate wheel offset, and potentially some bumper trimming depending on your bull bar design. Remember that final tyre clearance depends on multiple factors including wheel offset, backspacing, tyre brand (some brands run larger than their stated size), and your suspension's position under load and full articulation, so always test fit and cycle suspension through full travel before committing to a tyre size.

Tough Dog provides comprehensive warranty coverage on all components in this lift kit, backed by their national dealer network and reputation as Australia's leading 4WD suspension manufacturer. Shock absorbers typically carry a limited lifetime warranty against manufacturing defects for the original purchaser, while coil springs and leaf springs are covered under Tough Dog's standard warranty period. To maintain full warranty coverage, the kit must be installed by a qualified professional mechanic or 4WD suspension specialist, you must retain proof of purchase and installation records, and the components must be used within the manufacturer's specified load ratings and vehicle applications. Warranty does not cover damage from accidents, modifications, racing, or use with loads exceeding the selected spring rates, so accurate spring rate selection and proper installation are essential for long-term protection.

Absolutely — this Tough Dog kit is specifically engineered to provide excellent ride quality for daily driving while also delivering the capability needed for weekend touring and off-road adventures. The foam cell shock technology and carefully calibrated valve tuning provide compliant damping on smooth highways while maintaining control on corrugated gravel roads, making it equally suited to urban commuting and remote travel. When you select spring rates matched to your actual constant load, the kit delivers comfortable highway ride quality similar to factory suspension but with improved body control and reduced sway. Many Colorado RG owners use this setup as their primary vehicle for daily work and family duties throughout the week, then load up for touring on weekends without any compromise in comfort or capability.