Dobinsons IMS Monotube front shock absorbers for the Holden Colorado RG 2012-2020 — a monotube with an internal floating piston separating oil and gas. Dobinsons offer more than one specification for this vehicle — the differences are listed against each option so you can match the damper to your lift height and how the vehicle is loaded. Sold as a matched pair at Dobinsons RRP, in stock in Australia with fitment support from our team.
Browse all compatible suspension parts for your Holden Colorado RG 2012-2020 using our parts finder.
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Holden | Colorado | RG | 2012 - 2020 | 2.8L Duramax Turbo Diesel |
Note: This listing suits the RG Colorado. The RC (2008-2012) uses different parts, as does the Colorado 7 / Trailblazer wagon which is coil sprung at the rear.
Not sure if this fits your vehicle? Contact our suspension experts or check our FAQ page.
| Specification | Part Number | Price (pair) |
|---|---|---|
| 0"-2" Lift | Adjustable Spring Seat Height | X = 190mm / 7.48" | IMS21-50470 | $652.00 |
| 3" Lift | Adjustable Spring Seat Height | X = 190mm / 7.48" | IMS21-50472 | $652.00 |
| Line | Construction | Best For |
|---|---|---|
| Nitro Gas | Twin tube, nitrogen charged | Daily driving and light touring — the value option |
| IMS Monotube | Monotube, internal floating piston | Heavier constant loads and sustained touring heat |
| MRA | Monotube, remote reservoir, 3-way adjustable | Hard touring and towing, tunable damping |
Strut-type front dampers are removed with the coil spring as an assembly — a spring compressor and a wheel alignment afterwards are required, so most owners have these fitted by a workshop.
Dobinsons has been designing and manufacturing 4WD suspension in Australia for decades, with springs wound and dampers valved for local loads, corrugations and touring distances rather than adapted from an overseas market spec. Every part is backed by a Dobinsons manufacturer warranty. View the full Dobinsons range to match the rest of your build.
Holden Colorado RG 2012-2020 owners replacing worn factory dampers, matching new dampers to a lift, or upgrading damping for touring and towing. Pair them with the matching rear dampers so both axles behave the same.
New to Colorado suspension? Read our guide to common Colorado suspension problems and how to fix them.
Yes — these Dobinsons IMS Monotube front dampers suit the Holden Colorado RG 2012-2020 and replace the factory units directly. This listing suits the RG Colorado. The RC (2008-2012) uses different parts, as does the Colorado 7 / Trailblazer wagon which is coil sprung at the rear.
Nitro Gas is a nitrogen-charged twin tube — the value option for daily driving and light touring. IMS is a monotube with an internal floating piston that copes better with heat and heavy constant loads. MRA adds a remote reservoir and 3-way external damping adjustment.
Each option lists what Dobinsons specify for it — match the damper to your lift height and the weight the vehicle carries. Our team can confirm the right one for your build.
A matched pair (2 x) of Dobinsons front shock absorbers. Coil springs and fitting hardware are sold separately.
Yes — on strut-front vehicles the alignment should always be checked after the struts are out.
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