The Dobinsons IMS 75mm Lift Kit transforms your Holden Colorado RG with advanced foam cell shock technology, precisely engineered spring rates, and complete hardware for a balanced lift that excels both on the highway and off-road. This comprehensive premium lift kit includes IMS shock absorbers, matched coil and leaf springs, upper control arms, diff drop kit, and brake line relocation for a complete suspension upgrade. Designed and tested in Australian conditions, this kit is backed by Dobinsons' renowned warranty and delivered with fast dispatch from local stock.
Browse all compatible suspension parts for your Holden Colorado Rg using our parts finder.
| Make | Model | Series | Years | Body Type |
|---|---|---|---|---|
| Holden | Colorado | RG | 2012-2020 | All Cab Configurations |
Need confirmation on your specific Colorado variant? Our team can verify exact fitment for your build. Contact our suspension experts or browse all suspension parts for the Holden Colorado RG using our parts finder.
Selecting the correct spring rate is critical for optimal ride quality and component longevity. When ordering, choose spring rates based on your constant accessory load only — this means the weight permanently fitted to your vehicle, not occasional loads. Front constant loads include bullbars, winches, upgraded batteries, long-range fuel tanks, and heavy-duty bash plates. Rear constant loads include canopies, drawer systems, dual spare wheel carriers, auxiliary fuel tanks, and permanently mounted toolboxes. Occasional loads such as camping gear, water, passengers, and towing should not be factored into spring rate selection, as oversized springs will result in harsh ride quality and potential damage to other suspension components. If you regularly carry heavy loads, consider pairing this lift with airbag suspension for adjustable load support.
Professional installation by a qualified 4WD suspension specialist is strongly recommended due to the comprehensive nature of this kit and the precision required for control arm and diff drop fitting. Wheel alignment is mandatory after installation to ensure correct toe, camber, and caster settings, preventing premature tyre wear and maintaining factory handling characteristics. A 500km break-in period is required for springs to settle and shocks to bed in — avoid extreme off-road use during this period and recheck all fasteners at 500km intervals for the first 2,000km. When installing a 75mm lift, many Colorado RG owners choose to upgrade to extended control arms for improved wheel travel and suspension articulation — this kit includes upper control arms, providing excellent value and complete geometry correction out of the box.
Dobinsons has been engineering premium 4WD suspension in Australia for over 60 years, with products proven across the harshest outback conditions, Cape York expeditions, Simpson Desert crossings, and daily tradesperson use. Every component in this kit is developed with extensive real-world testing, computer-aided engineering, and feedback from professional 4WD tourers and commercial operators who demand reliability in remote locations. Backed by comprehensive warranty support and trusted by Australian 4WD enthusiasts nationwide, Dobinsons represents the gold standard in suspension engineering. Explore the complete Dobinsons suspension range for additional upgrades including steering dampers, sway bars, and replacement components.
This 75mm lift kit is ideal for serious Colorado RG owners who demand maximum ground clearance for remote touring, Outback travel, beach driving, and challenging off-road tracks while maintaining excellent on-road manners for daily commuting and highway towing. It's particularly suited to tradespeople who need load-carrying capability combined with durability, caravan and camper trailer towers requiring improved towing stability, and adventure tourers heading to Cape York, the High Country, or remote desert locations where suspension reliability is critical. If you regularly carry extreme loads or tow heavy trailers, consider supplementing this kit with airbag suspension for on-demand load support and level adjustment.
All Dobinsons components are held in Australian stock for fast dispatch nationwide. Our suspension specialists are available to assist with spring rate selection, fitment confirmation, and technical support throughout your build. Order with confidence knowing you're investing in proven Australian engineering backed by comprehensive warranty support and decades of outback testing. Ready to explore more options? Browse our complete lift kit range or contact our team for personalized suspension advice.
This kit is specifically engineered for the Holden Colorado RG series covering model years 2012-2020, fitting all cab configurations including single cab, space cab, and crew cab variants. It suits both 2WD and 4WD models, though most customers install on 4WD versions for touring and off-road use. The kit includes all necessary hardware for a complete bolt-on installation including control arms, diff drop, and brake line relocation components. If you're unsure about your specific variant or have aftermarket modifications, our team can verify exact fitment before ordering.
This Dobinsons IMS kit delivers a genuine 75mm (approximately 3 inches) of lift height measured at the vehicle body, significantly improving ground clearance for larger tyre fitment and off-road capability. Actual lift height may vary slightly depending on your vehicle's current load, selected spring rates, and accessory weight, with typical results ranging from 70-80mm once the kit is fully settled. The lift is balanced front to rear, maintaining factory rake and ensuring proper weight distribution for towing stability. After the 500km break-in period, springs will settle to their final height, and we recommend measuring at this point to confirm your achieved lift.
This comprehensive kit includes everything needed for a complete 75mm suspension upgrade: 2 x IMS foam cell front shock absorbers, 2 x front coil springs, 2 x IMS foam cell rear shock absorbers, 2 x raised leaf springs, 4 x heavy-duty U-bolts, polyurethane leaf spring bush kit, pair of upper control arms, diff drop kit, and brake line relocation hardware. The inclusion of control arms and diff drop components sets this kit apart from basic lift kits, as these critical items correct suspension geometry and prevent CV joint and drivetrain issues common with lifted vehicles. All hardware is supplied, though professional installation is recommended for correct fitment and setup.
Yes, this kit is excellent for towing when configured with appropriate spring rates for your constant load and towing requirements. The IMS foam cell shock absorbers provide superior damping control under load, reducing body roll and pitch during acceleration and braking with a trailer attached. The upgraded leaf springs are available in multiple load ratings to accommodate rear-heavy setups common when towing, while maintaining comfortable ride quality when unladen. For maximum towing versatility, many Colorado owners pair this lift kit with airbag suspension for on-demand load leveling and additional support when hitching heavy caravans or camper trailers.
This kit includes a pair of upper control arms, which are essential for correcting front suspension geometry at 75mm lift height and are already factored into the kit price. The supplied upper control arms restore proper camber and caster angles, preventing premature tyre wear and maintaining factory steering feel and stability. Lower control arms are not included as the factory items remain suitable at this lift height when combined with the included diff drop kit. The combination of upper control arms and diff drop ensures CV joints operate at correct angles, preventing binding and premature wear that can occur with lifted vehicles using factory geometry.
Yes, professional wheel alignment is absolutely mandatory after installing any lift kit, especially one that includes new control arms and raises the vehicle by 75mm. The alignment should be performed after all components are installed and torqued to specification, and ideally after the initial settling period of 500km when springs have reached their final height. A qualified alignment shop should set toe, camber, and caster to manufacturer specifications (or performance specifications if recommended by your installer), ensuring even tyre wear, stable highway tracking, and predictable handling. Failing to align after installation will result in rapid tyre wear, poor handling, and potentially unsafe driving characteristics.
Absolutely — this kit offers multiple spring rate options for both front coil springs and rear leaf springs, allowing you to match the suspension to your specific constant accessory load. When ordering, you'll select spring rates based on the permanent weight of accessories like bullbars, winches, canopies, and drawer systems fitted to your Colorado. It's critical to be honest about constant loads and avoid selecting spring rates for occasional loads like camping gear or passengers, as overly stiff springs will result in harsh ride quality and potential component damage. Our team can assist with spring rate selection based on your specific build and intended use to ensure optimal ride comfort and load-carrying capability.
With a 75mm lift and appropriate wheel offset, most Colorado RG owners can comfortably fit tyres up to 285/70R17 or 265/75R17 (approximately 32-33 inches diameter) without rubbing during off-road articulation or full steering lock. Some minor trimming of plastic inner guards may be required depending on your specific wheel offset and tyre choice, particularly if running aggressive tread patterns with larger shoulder blocks. For maximum clearance, consider a wheel with slightly more negative offset (pushed outward), though this should be balanced against increased steering effort and bearing loads. Always test fit with full suspension compression and steering articulation before committing to remote travel, and consider that mud buildup can reduce clearance on the trail.
Dobinsons provides comprehensive warranty coverage on all components in this kit, with shock absorbers typically covered for 2 years or 40,000km (whichever comes first) and springs covered against sag and breakage under normal use conditions. Warranty terms may vary by component, and full details are provided with your kit documentation and available from our team before purchase. To maintain warranty coverage, professional installation is recommended with proof of fitting, wheel alignment must be performed, and all service intervals and inspections should be documented. Dobinsons has built their reputation on standing behind their products, with warranty claims processed efficiently through our Australian support network.
Yes, despite the substantial 75mm lift height, this Dobinsons IMS kit is designed to maintain excellent on-road comfort and highway manners thanks to the advanced foam cell shock technology and carefully engineered spring rates. The IMS foam cell design eliminates shock fade and aeration common with basic gas shocks, providing consistent damping through corrugations, potholes, and highway undulations. Many Colorado owners report improved ride quality over the factory suspension, particularly when springs are correctly matched to their constant load, as the premium components better control body movement and absorb road imperfections. The kit delivers a balanced setup that's equally at home on the daily commute, weekend highway towing, or remote outback touring, making it ideal for vehicles that serve dual duty as workhorses and adventure rigs.
Best upgrade I've done to the Colorado
Had this Dobinsons 75mm lift kit fitted to my work RG about 6 months back and it's been absolutely brilliant. Loaded up with tools and materials every day, the ride quality is miles better than stock and it doesn't sag like the factory setup did. Took it out to a remote job site last month and the extra clearance made light work of some pretty rough tracks. Well worth the money for anyone using their Colorado properly.(5)
Proper Setup for Serious Remote Travel
Been running this Dobinsons 75mm lift kit on my Colorado for over 18 months now, including multiple Cape York trips and plenty of Simpson Desert crossings. The foam cell shocks handle the corrugations brilliantly without fading, and the complete kit with UCAs means the geometry is spot-on even when loaded up with long-range tanks and recovery gear. Best value properly engineered kit you'll find for the RG platform if you're doing genuine remote work.(5)
Perfect Upgrade for Our Family Tourer
Finally bit the bullet and got the Dobinsons 75mm lift kit installed on our Colorado, and it's transformed the whole rig for our monthly camping trips down the coast and out west. The ride quality is actually better than stock now, even with the camper trailer loaded up with all the family's gear. Fitment was spot-on and the foam cell shocks handle the corrugations so much better than the old setup. Worth every cent for anyone doing serious touring with the family.(5)
Proper upgrade for a working truck
Been running this Dobinsons 75mm lift on my RG Colorado for about 6 months now, loaded up with tools and gear daily. The ride quality is miles better than stock, even when I'm fully loaded heading to site, and it handled the beach tracks down the coast last month without any dramas. Well worth the coin if you actually use your rig for work.(5)
Proper Kit for Serious Remote Touring
Been running this Dobinsons 75mm lift on my Colorado for about 8 months now, including a Cape York trip and multiple Simpson crossings. The foam cell shocks handle the corrugations brilliantly without that harsh jarring you get from cheaper setups, and the extra clearance has already saved my diffs twice on rutted tracks. Fitment was spot-on with all the hardware included, which made the install straightforward for anyone with decent mechanical knowledge.(5)
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