Chassis Unlimited Octane Truck Rear Bumper CUB910301 2015-2019 GMC Sierra 2500/3500 Texture Black Powder Coat
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish
Chassis Unlimited Octane truck rear bumper CUB910301 for 2015–2019 GMC Sierra 2500/3500, rugged textured black powder coat finish

Chassis Unlimited Octane Truck Rear Bumper CUB910301 2015-2019 GMC Sierra 2500/3500 Texture Black Powder Coat

$1,871.73
$1,871.73 $2,433.25
Sale

Vehicle Fit: 2015-2019 GMC Sierra 2500/3500

Material: 3/16" USA Steel

Finish: 3-Stage Texture Black Powder Coat

Color: Black

D-Ring Mounts: Yes – 1" Thick CNC Machined Recovery Points (1" Bore)

Light Cutouts: Yes – (2) Recessed 3" LED Cube Mounts (Lights Sold Separately)

Tow Hook Compatibility: Direct Factory Mounting Points

Mounting Hardware: Included

Made in: USA (California)

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✓ FITMENT GUARANTEED — If it doesn't fit your truck, we make it right. Learn more
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Free Shipping Terms and Conditions Orders are shipped daily through our freight carrier partners such as FedEx Freight, Road Runner, Center Transport and Center Freight. A phone number must be provided by the customer prior to the delivery of their order. This will be the primary contact method that will be used by our delivery partners to set an appointment and to inform the customer that their order is ready to be received. Failure to provide a phone number may delay the delivery of the order which can lead to additional charges. This includes a storage fee that will be shouldered by the customer. Although free shipping is applicable to both residential and commercial addresses, a residential location may not have the appropriate equipment to conveniently unload your items. To help ensure that the delivery is done safely, the option to have your items shipped by a vehicle equipped with a liftgate is available for a $50 fee if shipping to a residential address. Read More x
At BumperOnly.com, we’re always working hard to ensure that the content we provide can be as informative and interesting as you need it to be. We want this platform to become your ‘go-to’ for everything you want to know about aftermarket truck bumpers, offering you helpful tips from experts in the field. We know how hard finding the perfect bumper for your truck can be, that’s why our technical team and copywriter have been joining forces for the past decade to generate over 50k words of content on all aspects related to bumpers. Whether you’ve got doubts about the weight of Ranch Hand bumpers, the thickness of Fab Fours bumpers, manufacturing, safety, the coating of Hammerhead bumpers or else, we have a helpful article about it. We use the years of experience in bumpers that we have behind us to also cover content about manufacturers’ comparisons, installation tips and even offer recommendations based on our real customers’ feedback. Read More x
Thanks to our constant dedication to FEDEC (Focus, Experience, Dedication, Expertise, Consistency), we have been able to become the first bumper store to offer the BFG (Bumper Fitment Guarantee) program to all of our customers who buy an aftermarket bumper from our online shop BumperOnly.com. We fully understand the level of frustration and complications that buying a bumper that does not fit your truck can cause. You might have been waiting weeks to finally buy one of the fantastic Ranch Hand bumpers or Fab Fours bumpers, only to be met with disappointment once it arrives and it doesn’t fit with your vehicle. We want to make a difference by helping you save both money and time with this program, issues like that happen very easily when you order products from a big online department store, that’s why we’ve started the BFG program, to take away the worries and stress of buying bumpers online. Read More x
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. Read More x
We pride ourselves in offering unbeatable levels of customer care to all of our customers. We have dedicated customer reps that are passionate about helping customers find exactly what they need, and are always available to talk. Whether you are wondering if your truck is best suited for one of the Road Armor bumpers or the Addictive Desert Designs Bumpers, we are ready to help. By ‘Life Support’ we genuinely mean lifelong access to our team of professionals, continuing to offer you our expert advice anytime you need it. Our customer/business relationship doesn’t end from the moment you purchase one of the Ranch Hand bumpers or any other products, we are here for you every step of the way. Read More x
Product Details

Chassis Unlimited Octane Truck Rear Bumper for GMC Sierra 2500/3500 (2015–2019) CUB910301 – Heavy-Duty Steel with Integrated Steps

Your 2015–2019 GMC Sierra 2500/3500 was built to haul, tow, and handle tough conditions whatever the roads throw at you. This Octane truck back bumper guard from Chassis Unlimited matches that same work ethic. Manufactured from 3/16" USA steel and finished in a durable 3-stage texture black powder coat, it delivers serious rear-end protection with a clean, low-profile design that doesn’t overpower the truck’s stance.

 

Armor Your Sierra with a Purpose-Built GMC Truck Bumper!

  • Stronger 3-Piece Construction – The improved design enhances the bike's strength without compromising on the competitive look of Octane.
  • Heavy-Duty Recovery Points – With CNC-machined 1-inch thick tabs with a 1-inch bore, you are provided with the strength of recovery when the need occurs.
  • Integrated Corner & Center Steps – Helps you easily access the bed, especially with lifted trucks or larger tires.
  • Backup Light Capability – Having recessed mounts provides space for two 3-inch LED cube light options that can be utilized during backup requirements for trailers.
  • Ready to Install – Bolt-on design goes directly onto factory mounting locations without the need for any welding or fabrication.
  • Built in California – Each and every bumper constructed by Chassis Unlimited is built to exacting standards.

 

Why Select the Chassis Unlimited Bumper – Heavy-Duty Truck Back Bumper Guard Protection?

This truck rear bumper isn’t just about looks—it’s about real-world durability. It adds the kind of protection and functionality Sierra HD owners appreciate, whether you’re towing equipment, working on-site, or heading off pavement.

 

If you’re upgrading to a serious truck back bumper guard that’s built to last, this Chassis Unlimited bumper delivers strength without unnecessary bulk. Bolt it on your GMC truck bumper setup and put your Sierra back to work with confidence. 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.

Shipping
Price Guarantee

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.

Installation Guide
CHASSIS UNLIMITED comes complete with installation instruction. If you need assistance, call CHASSIS UNLIMITED Products Technical Support or bring it to your local auto body shop to install.

Please click here to download installation manual.