Free Shipping
Price Match Guarantee
Safe/Secure Checkout
Questions? Chat or Call us: (409) 916-8280
Heavy-Duty Capacity. Made in the USA. Lifetime Warranty.
The Ultimate Overlanding WorkhorseAre you tired of flimsy bed racks that wobble at highway speeds or limit your gear options? Stop letting gear limitations dictate your adventures. The Mule SAM Rack transforms your GMC Sierra 2500/3500 HD into a mission-ready rig.
Engineered for contractors and overlanders who refuse to compromise, this rack solves the critical pain points of heavy-duty truck owners. Whether you're hauling lumber by day or mounting a rooftop tent for weekend expeditions, this is the last rack you'll ever buy.
Why Expedition One Built the Mule SAM:The Pain: Generic roof racks fail to support the heavy payloads required by 3/4-ton and 1-ton truck owners. Furthermore, off-the-shelf crossbars often warp under the weight of rooftop tents or heavy expedition gear.
The Expedition One Solution: A heavy-duty rack featuring proprietary HD Extruded Aluminum load bars that offer significantly more surface area and structural strength than standard T-slots. It eliminates weight anxiety and wasted space, delivering a massive 500+ lb capacity.
Production Lead Time Notice
Lead Time: 4 Weeks. This rack is handcrafted and built to order in the USA to ensure a premium fit for your HD truck.
Key Features: Mule SAM Sierra HDWith a dynamic load capacity of 250 lbs and a static capacity of 500 lbs, it's more than ready for large rooftop tents and heavy expedition gear.
Our heavy-duty extruded aluminum load bars offer significantly more surface area and strength than common off-the-shelf T-slot bars.
The T-slot extruded aluminum load bars are fully compatible with a wide array of universal mounts for fuel packs, recovery boards, and more.
Start with the standard 3 load bars for essential loads, or add up to 2 more for a full-floor platform, giving you complete control over your setup.
Precision-engineered to work seamlessly with factory cab lights. We offer an optional front fairing specifically designed with a cutout to accommodate them.
Side rails feature a tough textured black powder coat, while the load bars come in a standard silver anodized finish (black optional) for corrosion resistance.
Proudly designed, tested, and handcrafted in the USA using premium 3/16" formed steel side rails.
Adventure with complete confidence. Expedition One stands by the superior quality of their racks with a Lifetime structural warranty.
Built for the Toughest ExpeditionsThe Mule SAM Rack doesn't just look tough; it's engineered for professional-grade hauling. The side rails are constructed from robust 3/16" Formed Steel, finished in a textured black powder coat to withstand harsh weather and job site abuse.
Unlike competitors, the Mule SAM utilizes Proprietary HD Extruded Aluminum Load Bars. The standard silver anodized finish on these bars creates a hard, corrosion-resistant layer that protects the aluminum from wear and tear, ensuring long-lasting durability.
250 lbs Dynamic Load 500 lbs Static Load USA Made In Lifetime Warranty
Installation Notice
Professional Installation Recommended: While the Mule SAM is built for ultimate strength, some 2500/3500 HD model variations may require minimal drilling into the roof to secure the structural mounting points. We always recommend professional installation to ensure a watertight and structurally sound fit.
| Vehicle Fitment | GMC Sierra 2500 / 3500 HD & Denali |
|---|---|
| Side Rail Material | 3/16" Formed Steel |
| Load Bar Material | Proprietary HD Extruded Aluminum |
| Included Load Bars | 3 (Expandable up to 5) |
| Side Rail Finish | Textured Black Powder Coat |
| Load Bar Finish | Silver Anodized (Optional Black) |
| Load Capacity | 250 lbs Dynamic (highway) | 500 lbs Static (stationary) |
Yes, it will. The Mule SAM Rack's front crossbar is precision-notched to clear factory cab lights without modification. We also offer an optional front fairing specifically designed with a cutout to accommodate the factory cab lights on GMC Sierra HD and Denali models, ensuring a perfect fit.
Some 2500/3500 model variations may require minimal drilling to secure the load-bearing mounting points. Because of this, we always recommend professional installation.
The silver anodized finish on our aluminum load bars creates a hard, highly corrosion-resistant layer that protects the aluminum from the elements and wear and tear, ensuring long-lasting durability. A black powder coat finish is also available as an option.
Yes. The optional front fairing is designed to accommodate up to a 40-inch light bar, allowing for powerful, forward-facing illumination for your off-road adventures. We offer several premium light bar options at the time of purchase.
All Expedition One racks come with a lifetime structural warranty and a 5-year finish warranty against manufacturing defects. Adventure with complete confidence.
California Residents
Prop 65 Warning- Product may contain chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
Proposition 65 is a California law passed in 1986. Its goals are to protect drinking water sources from toxic substances that may cause cancer and birth defects and to reduce or eliminate exposures to those chemicals generally, for example in consumer products, by requiring warnings in advance of those exposures.
The regulation requires the State of California to revise and republish yearly a list of chemicals known to the State of California to cause cancer or birth defects or other reproductive harm. The current list contains over 900 naturally occurring and synthetic chemicals. This regulation also requires manufacturers to place warnings on products that contain any of the chemicals listed by the State of California. No other states require warnings of this nature, and products with Prop 65 warning language are legal to sell in all states. Detailed information regarding requirements for compliance to the California Prop. 65 is can be found at: www.P65Warning.ca.gov
We get it. You've got a lot of choice when it comes to online retailers.
Here's why we think you should shop with us at ExtrailAuto.
The wait time was more than I anticipated even after seeing the notification of long lead times. I have to give them props for giving some compensation for the excessive wait time. Having slightly larger holes would help with fitment. Had a hard time getting the front drivers side away from the pinch weld. Eventually had to use washers to add space away from the truck. Need to update pictures and instalation video for the new sliders they are now making
All packing and shipment were great, everything was there. I had to contract out the install because of arthritis, it took them two hours and looks perfect. Zero wind noise at any speed 0 to 100.
Absolutely love my new rack and roam cases. Appreciate the Sherpa crew as well for their hospitality while the installation was taking place.
Fit and finish is excellent. Looks great on the Bronco. No whistling noise at all, some additional wind noise over 60mph but not much different than it was without the rack. Assembly was not too difficult. Instructions and videos could be a little better.
The quality and dedication of the team at Sherpa is evident from the very first interaction with them, and is further proven in the product itself. This rack is well engineered, easy to assemble, easy to adjust, and holds up incredibly well with no loosening or rattling or shifting (even after over 200 miles of driving on poorly maintained roads). Currently operating with approximately 180 pounds of gear mounted on the bed rack and no issues at all so far. I expected the vibration to work the bolts loose over time, but every time I check they're all still snug. My only regret is that I didn't pull the trigger and get this rack sooner.
First of all, the team at Sherpa is full of passion for adventure and that passion shows in the quality of their products. This roof rack looks incredible and surprised me with it's sturdiness. No loosening of hardware, even after weeks of driving. Currently holding approximately 80 pounds of gear for everyday driving, plus an additional 110 strapped on top during a camping trip (and I even stood on top of the entire loadout). No warping, bending, twisting, or slipping. The fact that this matches the bed rack perfectly in height is the icing on the cake. Easily serves as a tie off for a tarp, rain fly, hammock, or whatever you need. Perfect for modular campsite setup and quick teardown.
I bought the Sherpa Crestone rack for my 2024 4Runner TRD Pro. Incredibly well-made and excellent design. Spend the extra , to get best roof rack in the market. You won’t regret it.
This is our first roof rack that we are going to use to put a RRT (roof top tent) on for back country trips. Well-built product that came with all the nuts, bolts and washers to complete the installation. Took about 1-1/2 to 2 hours install the rack. You will another person to help place the racks on top of the Jeep for final install. Overall, a great, well-built American product
Install was super easy. The quality was great. Customer service was quick to respond to any issues! I’ve already been getting compliments on it and what brand it is. This will be great for camping this year!
This is on my tundra absolutely solid rack looks fantastic extremely modular, which is why I went this route. I can use the whole rack when traveling and over landing then rock the chase rack only when the rest is not in use, I actually use the recovery traction board mounts for my shower room set up, which works amazingly just relocated the board somewhere shown in picture keep innovating TUWAand I’ll keep purchasing.
Good looking cat shields made of stainless steel with cooling holes. Priced well, easy install, no issues. Would buy again.
Great service from their staff. Robert help me through all the process with a request I had, he responded all emails in a timely manner and provided great help.
We received it within 3 days and installed the same day. Great awning and very well made.
the tent is very nice, comfortable and roomy.
Following the instructions was fairly easy. Its better to have second person to set it up. I really like the tent and the support that from ExtrailAuto. Really recommeded! Thanks
