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Heavy-duty Octane rear bumper by Chassis Unlimited — precision-engineered from raw steel for 2015 to 2019 GMC Sierra 2500 and 3500 HD trucks, featuring factory sensor cutouts and rugged off-road readiness.

Original price was: $2,433.25.Current price is: $92.20.

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Description

Vehicle Fit: 2015-2019 GMC Sierra 2500/3500

Material: 3/16” USA Steel

Finish: Raw Steel

Color: Bare Steel

Winch Mount: No

D-Ring Mounts: Yes – CNC Machined 1” Thick Recovery Points

Light Cutouts: Recessed Mounts for (2) 3” LED Cube Lights

Tow Hook Compatibility: Retains Factory Mounting Points

Mounting Hardware: Included

Made in: California, USA

Chassis Unlimited Steel Rear Bumper for GMC Sierra 2500/3500 (2015–2019) CUB910302RAW – Raw Strength Built for Real Work

If your truck spends more time hauling, towing, or backing up to a trailer than sitting pretty in a parking lot, this steel rear bumper from Chassis Unlimited was made with you in mind. It’s tough where it counts and clean where it shows. This ain’t just another aftermarket back bumper—it’s a purpose-built upgrade for serious Sierra owners. Designed specifically for the 2015–2019 GMC Sierra 2500 and 3500, this GMC Sierra offroad bumper keeps your factory parking sensors working just like they should. No warning lights. No guesswork.

Reinforce Your Sierra with the Strength of a Chassis Unlimited Bumper!

  • Stronger 3-Piece Construction – Added structural integrity without changing the sleek Octane profile.
  • Heavy-Duty Recovery Points – CNC-machined 1” thick mounts with a 1” bore give you confidence when it’s time to pull or be pulled.
  • Integrated Corner & Center Steps – Makes climbing into the bed easier—especially with bigger tires.
  • Backup Light Ready – Recessed mounts for 3” cube LEDs improve visibility when you’re lining up in the dark.
  • Sensor-Friendly Fitment – Parking sensors function just like factories without a doubt.

Why Use the Chassis Unlimited Steel Rear Bumper with GMC Sierra Offroad Bumper Strength?

This Chassis Unlimited bumper stands out because it balances work-ready durability with clean, low-profile styling. Made from 3/16” USA steel and built in California, it’s designed for truck owners who use their trucks the way they were intended to be used.

 

It bolts right onto existing mounting points without any welding or cutting. Coat it your way, wire it your way, and put it to work. If you’re after a steel rear bumper that’s built honest and built tough, this one’s ready when you are. Shop with us now!

 

Custom Bumper Tips

Always do your homework before you buy a bumper! Below you can find everything you need to know about bumpers’ weight, thickness, selection, and more. To help your decision, we’ve compiled a full list of all the bumpers we carry. Compare them by look, function, and price.

 

Everyone wants to know about the weight of steel bumpers and we’re here to help you out. In this blog, you can find every answer to any question you could have about it.

 

What’s the right thickness for a bumper? Find out with our guide to bumper thickness.

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