







🚙 Elevate every mile with precision-tuned shock mastery
The Rancho RS9000XL RS999288 Suspension Shock Absorber offers industry-first nine-position manual damping adjustment, engineered for heavy-duty trucks and SUVs. Featuring a durable 18mm nitro-carburized piston rod, nitrogen gas pressurization to minimize fade, and a tri-tube body with all-weather fluid, it delivers superior ride control and longevity across extreme temperatures from -40 to 248°F. Ideal for professionals demanding customizable, reliable suspension performance on and off the road.











| ASIN | B0018YGMZE |
| Auto Part Position | Front |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #219,171 in Automotive ( See Top 100 in Automotive ) #2 in Automotive Performance Shocks & Struts #631 in Automotive Replacement Shocks |
| Brand | Rancho |
| Customer Reviews | 3.9 3.9 out of 5 stars (63) |
| Date First Available | October 10, 2007 |
| Extended Length | 2.75 Inches |
| Exterior Finish | Painted |
| Global Trade Identification Number | 00039703092883 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 5.45 pounds |
| Item model number | RS999288 |
| Manufacturer | Rancho |
| Manufacturer Part Number | RS999288 |
| Material | Iron, Polyurethane (PU) |
| Model | H2,H2,H2,H2,H2,H2,H2,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Silverado,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Sierra,Silverado,Silverado,Sierra,Sierra*:*49 |
| OEM Part Number | RS999288 |
| Style | Music |
| UPC | 039703092883 |
| Vehicle Service Type | Car, Truck |
L**Z
Should have done this sooner
I purchased and installed four of these for my 2004 2500 HD Chevy. I have 110,000 miles on the truck. What an amazing difference it made! I wish I would have thought of this sooner. The shocks take out all of the little bumps and vibrations that I had become used to. Installation was pretty simple, it took about one and a half hours for the first one, and probably thirty minutes for the second one. I left the shocks in the middle position so far, and I am pleased with this. If you wanted to save some money, you could get the 5000s. The ride quality in the middle position is supposed to be the same as the 5000s. I decided on the 9000s because I figured why not have the adjustable feature. The fronts are easy to adjust, just reach behind the tire. The rears on the other hand are quite a bit tougher. Prepare to get dirty laying on the ground or grab some cardboard. Just a tip, once you have the tire off, you should grab a grease gun and hit any zerks that need to be greased while they are easily accessible.
C**B
Reliable and stiff shock
I got 100,000 miles out of my last set. Exact fit and adjustable stiffness. I just replaced the fronts on a 06 Silverado 2500. Rears are still good after 1000,000.
S**P
A very nice performing shock but............
I installed these on a 2006 2500HD GMC crew cab. They work as advertised and the adjustments work as advertised. The shock is physically beefier in all respects compared to my stock shocks. I'm able to turn up the firmness setting and gain much better control over my vehicle's suspension when I'm towing my large trailers. I didn't give it 5 stars for the following reasons: 1) They don't provide installation instructions and tell you instead to refer the factory service manual. These shocks are different enough from the stock factory shocks that it will leave you guessing bit on how tight to tighten the provided nylock nut on top of the shock. 2) They give you a nice silicone rubber boot to protect the shaft from the elements but then provide you with a very substandard zip tie to secure the lower part of the boot to the shock body. Why not provide a nice stainless steel clamp to secure the boot instead? I'll tell you why: $$ 3) They advertise 9 levels of adjustment but these only have 7. Functionality if still fine however.
M**.
Just okay
The install was easy, the adjusters can get hard to turn. We use our truck for snow plowing in the winter and trailer towing in the summer and it is difficult to tell if it actually rides better.
R**G
2002 Silverado 2500HD Duramax 4x4 RS9000XL
Great ride and perfect fit. The adjustability is a nice feature if you tow a lot. Beefier shock than RS5000 so they should be better for hvy duty appl.
J**.
Looking Good So Far
Mine came from TSETruckStuff with free shipping and they came incredibly fast (just a few days). Installation was easy. For a 2004 Chev Silverado 3500 with Duramax I have these front shocks set on level 5 (range 1-9, soft-hard) and that seems good for now (3 on the back for unloaded). The real test will come when I load the camper in the bed and get into windy areas. I'll try to report back after that (probably after about 5 months).
G**.
Rancho Product Quality in Question as well as Customer Service
Ordered four shocks. The damping of one of the new shocks was less then the old ones. When a Rancho company representative tells a customer not to worry about the issue/concern it shows a lot of arrogance. The red flag goes up in my book. Also, no instructions are included in the package. While replacing the old shock with the new is straight forward there is some minor assembly of the new shock required. Then these shocks are adjustable by a small knob at the bottom. This knob is very hard to turn when new, what is it going to be like a year from now after all the rain, mud & snow? Without instructions indicating a starting point there is no way to know what setting you are on. I guess there is trail & error. I sent the whole lot back. I would not recommend these shocks to anyone.
O**S
Lasted three months before they were bad on my 2500 GMC
Lasted three months before they were bad on my 2500 GMC, I ended up buying bilstein 5100 Series and haven't had a problem yet.
A**ー
数年前に同じ商品を純正から交換してオイルリークしてたのでまた購入し交換。 リークしてた時とあまり乗り心地が変わった感じかしない
O**N
Better overall ride
サ**イ
品物は届いたのですが2本セットと書いてあるけど1本しか届かず鵜呑みにして買うと痛い目を見る こんな詐欺紛いな事されると買う気をなくす
A**R
Stopped 5th wheel RV lunging truck when encountering dips in highway
D**R
Product worked well for my '04 Sierra 3500. Came quickly. Really only thing missing was installation instructions. Oh, and the red boot, which looks like it's the more expensive rubber expanding style, isn't. Instead, it's just a cheap plastic sliding boot, molded with ribs.
Trustpilot
1 day ago
1 week ago