2020-2025
2015-2019
2007-2014
2001-2006
Installation Time
(approx) 3 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
No guide available for this part yet.
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Chassis Unlimited Attitude Series Rear Bumper; Not Pre-Drilled for Backup Sensors; Black Textured (20-25 Sierra 3500 HD)Find parts that fit my vehicle
Item SHG24640
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2 Reviews
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$1,399.99 each
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Chassis Unlimited Attitude Series Rear Bumper
- Durable 3-Stage Texture Black Powder Coat Finish
- Rugged HD 3-Piece Modular Construction
- Integrated LED License Plate Lights
- Crafted from 3/16-Inch American Steel
- Featuring Corner and Center Steps
- Equipped with Robust CNC Machined 1-Inch Thick Recovery Points
- Rear Recessed Light Mounting for 3-Inch Cube Lights
- Precision Crafted and Manufactured in California
- Comprehensive Installation Instructions Provided
- Fits All 2020-2025 Sierra 3500 HD Models
| Brand | Chassis Unlimited |
| Bumper Type | Full Width |
| Bumper Material | Steel |
| Bumper Finish | Black |
| Bumper Winch Mount | No Winch Mount |
| Bumper Fog Light Fitment | Aftermarket |
| Bumper Location | Rear |
Description
Utility and Style. Upgrade your vehicle's rear end with this robust Chassis Unlimited Attitude Series Rear Bumper; Not Pre-Drilled for Backup Sensors; Black Textured. Whether you're in need of recovery points or a mounting platform for rear lights, this bumper has you covered. It even includes integrated LED license plate lights for added functionality and safety. With corner and center steps, you'll have no trouble accessing your truck bed. Plus, the rear recessed light mounting allows for (2) 3-Inch cube lights, so you can illuminate the trail ahead. It's the perfect addition for enhancing both utility and style.
Maximum Durability. Designed and manufactured in California, this bumper undergoes a 3-stage texture black powder coat finish for maximum durability, ensuring it stands up to whatever challenges come your way. This bumper is also crafted from sturdy 3/16-Inch American steel, it's designed to endure the toughest challenges on and off the road. Upgrade your vehicle's rear end with this versatile and rugged bumper that's engineered to tackle any adventure with ease.
Installation. The installation process of the Chassis Unlimited Attitude Series Rear Bumper is hassle-free, with comprehensive instructions provided. Bolting it onto your vehicle will be a breeze, with no drilling required.
Application. The Chassis Unlimited Attitude Series Rear Bumper fits all 2020-2025 Sierra 3500 HD models.
Fitment:
- 2020 GMC Sierra 3500
- 2021 GMC Sierra 3500
- 2022 GMC Sierra 3500
- 2023 GMC Sierra 3500
- 2024 GMC Sierra 3500
- 2025 GMC Sierra 3500
Chassis Unlimited CUB990571
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Bumper
- LED License Plate Lights
5.0
Customer Reviews (2)
Feb 23, 2023
Review shared from Chassis Unlimited Attitude Series Winch Front Bumper; Not Pre-Drilled for Front Parking Sensors; Black Textured (13-18 RAM 1500, Excluding Rebel)
2016 SLT - SickJoePick
Installation Time: Afternoon
My Extreme Chassis Attitude bumper is a bully
Just got back from Big Bend NP and thrashed my truck around the toughest roads. The bumper has the guts to hold up under harsh conditions. I would recommend lock washers and blue locktite on all connections as there was serious vibration and jostling going on. Needed more gap between fenders and bumper edges as the frame flex hammered the bumper against the fenders (it quit, self corrected over 120 miles of hammering!)
Fit 5/5
Appearance 5/5
Quality 5/5
Bang For Your Buck 5/5
Feb 6, 2023
Review shared from Chassis Unlimited Attitude Series Winch Front Bumper; Pre-Drilled for Front Parking Sensors; Black Textured (19-24 RAM 2500)
2021 Big Horn - Renz
Installation Time: Afternoon
Awesome Upgrade
This bumper gives my truck a super aggressive look. Very nice craftsmanship in the design and overall aesthetics of the bumper. It does come in the pieces nicely packaged for shipping. I am not overly happy with the powered coating, the first tap and it chipped away. I may have to add more coating to in later. This about 3 to 4 wrenches on the installation side. I used a YouTube video to remove my old bumper, which seemed simple enough. That is until the wiring harness came into play. The Attitude Bumper did not come with any instructions so if you are not mechanically inclined, please seek professional assistance. Also, this is a two-person job, even with jacks and lifts you will need another set of hands at various points in the installation. Once I was able to get all of the grommets disconnected then it was pretty much a cake walk. Remember to keep up with your factory hardware you will reuse it to install your new Attitude Bumper. I will post some picture of my installation as soon as I can.
Fit 5/5
Appearance 5/5
Quality 4/5
Bang For Your Buck 5/5
Reviews of Chassis Unlimited Exterior products have an average rating of 4.8 out of 5
Feb 4, 2025
Review shared from Chassis Unlimited Prolite Winch Front Bumper; Black Textured (20-23 Silverado 2500 HD)
2022 LTZ - Dubbs105
Surprisingly good!
Solid bumper, good powder coating. Very symmetrical. Put it on a 2022 Silverado HD with a Duramax. You have to completely disassemble your original bumper and cut off some tabs used to hold the old plastic lower grill in. You'll also need to relocate the lower shutters if you have them. Expect to do some various plastic trimming behind the lower shutters for the winch to fit. An Apex 12K fits right into the space in front of the radiator without having to relocate the control box. Have a friend or an engine lift because with a winch and light installed, it is HEAVY. If you've never taken the face off your truck, expect to spend about 8 hours pulling everything apart and getting it all trimmed up. Loose fit your original bumper first, then put the ProLite in place. There are plenty of YouTube videos for taking the old bumper off. Once it's all back together and you start throwing P05AE codes, you'll probably need to replace the lower shutter unit.
Nov 4, 2024
Review shared from Chassis Unlimited Octane Series Rear Bumper; Not Pre-Drilled for Backup Sensors; Black Textured (15-20 Colorado)
2019 ZR2 - TheAuzTex
Great Bumper, but needs some design review
The bumper is heavy duty and looks nice. One very irritating issue though... When installing the brackets for the bumper, found that the slots punched were too small. I had to ream the slots out to allow the factory stock bolts to fit through and bolt to frame. This issue added a couple of hours of installation time. plus a trip to the hardware stock to purchase reaming bits that fit drill to open up the slots. Once this was done, installation moved along better. Also wish that Chassis Unlimited supplied some photos in instructions to help identify the proper steps.
Oct 22, 2024
Review shared from Chassis Unlimited Octane Series Rear Bumper; Not Pre-Drilled for Backup Sensors; Black Textured (15-20 Canyon)
2016 - Randman
Nice looking bumper.
This bumper is tuff, well built and nice looking. Made of sturdy materials ready to assemble and install on your rig. The welds are layed well and the textured coating adds to the look.
May 9, 2024
Review shared from Chassis Unlimited Prolite Winch Front Bumper; Black Textured (19-21 Sierra 1500)
LJJ
Prolite bumper
Used the suggested shop by American Truck. Couldn’t be happier with the shop and the bumper. Looks like a factory upgrade. This thing is a tank.
Mar 4, 2024
Review shared from Chassis Unlimited Octane Series Winch Front Bumper; Pre-Drilled for Front Parking Sensors; Black Textured (19-24 RAM 1500, Excluding TRX)
2019 Laramie - idahoworktruck
very nice fit
fits nicely around the oe moulding, hope it lasts with all the salt they put on roads now in winter
Feb 13, 2024
Review shared from Chassis Unlimited Octane Series Winch Front Bumper; Not Pre-Drilled for Front Parking Sensors; Black Textured (09-12 RAM 1500)
2012 Sport - Stakes
Great Bumper
Its a great bumper. Gives the truck a beefy look. Cant wait t install lights and WInch Kit on it
Aug 8, 2023
Review shared from Chassis Unlimited Octane Series Winch Front Bumper; Pre-Drilled for Front Parking Sensors; Black Textured (14-15 Silverado 1500)
2014 - Austin2595
Great Bumper
I have had this bumper installed for a few months now. I like the look and it is really well made. A 12,000 lb winch makes for tight fit.
Apr 17, 2023
Review shared from Chassis Unlimited Octane Series Winch Front Bumper; Pre-Drilled for Front Parking Sensors; Black Textured (19-24 RAM 1500, Excluding TRX)
CodyESmith
Chassis Unlimited Octane front bumper
Over all I am pleased with this bumper. The craftsmanship is exceptional and quality is outstanding. The fit is lightly adjustable allowing for minor up and down and side to side movement. This allows the installer to tailor the bumper how they want it, high and tight to the grill, or left about 3/4” lower if they choose. The one thing I would change if I were to do this install over to make it a lot easier would be to cut the holes between the outer wings and center section larger. Currently, the holes are about 3-3.5” diameter making it very difficult to get your hand through it to install the nuts and bolts. There is plenty of material to open that hole up another inch. Other than that, everything went smoothly and took about 2.5 hours to install in my driveway. I opted to make some brackets to mount the factory fog lights as they fill the opening nicely and allow you to use the factory wiring. You will need to trim the mounts on the fog light to do this, but it’s a simple fix. Great product, solid bumper and simple install.
Feb 23, 2023
Review shared from Chassis Unlimited Attitude Series Winch Front Bumper; Not Pre-Drilled for Front Parking Sensors; Black Textured (13-18 RAM 1500, Excluding Rebel)
2016 SLT - SickJoePick
My Extreme Chassis Attitude bumper is a bully
Just got back from Big Bend NP and thrashed my truck around the toughest roads. The bumper has the guts to hold up under harsh conditions. I would recommend lock washers and blue locktite on all connections as there was serious vibration and jostling going on. Needed more gap between fenders and bumper edges as the frame flex hammered the bumper against the fenders (it quit, self corrected over 120 miles of hammering!)
Feb 6, 2023
Review shared from Chassis Unlimited Attitude Series Winch Front Bumper; Pre-Drilled for Front Parking Sensors; Black Textured (19-24 RAM 2500)
2021 Big Horn - Renz
Awesome Upgrade
This bumper gives my truck a super aggressive look. Very nice craftsmanship in the design and overall aesthetics of the bumper. It does come in the pieces nicely packaged for shipping. I am not overly happy with the powered coating, the first tap and it chipped away. I may have to add more coating to in later. This about 3 to 4 wrenches on the installation side. I used a YouTube video to remove my old bumper, which seemed simple enough. That is until the wiring harness came into play. The Attitude Bumper did not come with any instructions so if you are not mechanically inclined, please seek professional assistance. Also, this is a two-person job, even with jacks and lifts you will need another set of hands at various points in the installation. Once I was able to get all of the grommets disconnected then it was pretty much a cake walk. Remember to keep up with your factory hardware you will reuse it to install your new Attitude Bumper. I will post some picture of my installation as soon as I can.
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