Chassis Unlimited Octane Steel Rear Bumper CUB910302RAW 2015-2019 GMC Sierra 2500/3500 Raw, Sensor Cutouts

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.

We work hard to ensure that the prices of our aftermarket truck bumpers are the best available online. That’s why we guarantee that you’ll get the lowest price on all of our bumpers and accessories. Here’s how it works:

• We guarantee that the price of our aftermarket truck bumpers is the best available online. If you find an online store that offers a specific model at a lower price, let us know and we’ll match their price for your purchase.
• If you find that the exact bumper at an even lower price online within 6 months after your purchase, we will refund you the difference. Simply send a price difference refund request to support@bumperonly.com. This applies even to the prices from our own store at BumperOnly.com
• The competitor must be an online retailer with no physical stores and they must be an authorized dealer of the bumpers or accessories in question. The competing online store must also have the product in stock on their website for our price match guarantee to apply.
• The price match guarantee does not apply to online marketplaces such as Amazon, eBay, Overstock or any other similar websites. The competitor must be selling the item directly on their own online store.
• Additional promos cannot be applied in addition to the price match guarantee. For example, the free gift promo cannot be added on top of the price match guarantee. Only one promotion can be applied per purchase.

Once we confirm that your order is eligible for our price match guarantee, you can be confident that you’re getting the very best deal online.

Whether you’re looking for heavy-duty truck bumpers by Ranch Hand, a winch bumper by Fab Fours, or any other aftermarket truck bumper, if you shop with BumperOnly, you’ll never have to worry about buyer’s remorse.

For any questions about our price match guarantee, feel free to get in touch.

Shop without fear. Let BumperOnly take care of the rest.