ASFIR 4X4 Chevrolet Silverado 1500 / GMC Sierra 1500 Full Skid Plate Kit (5 Pcs) | 2018+
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Safe/Secure Checkout
Questions? Chat or Call us: (409) 916-8280
Comprehensive underbody armor shielding the front, engine, transmission, transfer case, and fuel tank for complete trail security.
Engineered from high-strength 6mm aluminum, providing elite impact resistance without the heavy weight or suspension sag of steel.
Precision-engineered for Silverado and Sierra 1500 models, allowing a direct installation using factory mounting points with no drilling required.
Integrated ventilation and drainage apertures maintain critical drivetrain cooling while allowing mud, water, and debris to shed easily.
Full Underbody Armor. 1/4" Aluminum Construction. 100% Bolt-On Fit.
The Ultimate Shield for Your Half-Ton RigThe ASFIR 4X4 Full Skid Plate Kit is the definitive protection solution for the 2018+ Chevrolet Silverado 1500 and GMC Sierra 1500. Designed for those who take their trucks beyond the pavement, this 5-piece kit creates a fortress beneath your chassis, shielding every critical component from the radiator to the fuel tank.
These ASFIR plates are trail-tested in some of the most unforgiving terrain on the planet. Built from high-quality 1/4" (6 mm) aluminum, this kit offers the brute strength of steel without the heavy weight penalty, ensuring your 5.3L rig stays agile and efficient.
Why ASFIR Protection:The Pain: Modern half-ton trucks come with massive, exposed fuel tanks and fragile transmission pans. A single "bad line" on a trail can lead to a $5,000 repair bill or a stranded vehicle.
The ASFIR Solution: Our 5-piece system provides a continuous "sliding surface." It features reinforced ribs for impact resistance and a 100% Bolt-On design that requires zero modifications to your frame.
Key Features: Total Underbody Armor
Uses factory mounting points for a true 100% bolt-on installation. Maintain your vehicle's structural integrity and resale value.
Shields the Front, Engine, Transmission, Transfer Case, and Fuel Tank. No component is left exposed to the trail.
Constructed from marine-grade 1/4" aluminum. Offers high impact resistance while being significantly lighter than steel alternatives.
The low-profile design is vehicle-specific, hugging the chassis to maximize ground clearance for rock crawling and deep ruts.
Strategically placed airflow slots ensure your transmission and engine stay cool, while drain holes let mud and water escape.
Features internal stiffening ribs to provide additional structural strength in high-impact zones like the differential and fuel tank.
Natural aluminum resistance to corrosion means these plates won't rust out even after heavy use in snowy or salty environments.
Comes with high-tensile fasteners and zinc-coated steel brackets for a secure, long-lasting installation.
Tested in Unforgiving EnvironmentsASFIR 4X4 has spent decades refining underbody protection for off-road expeditions. This 5-piece system is designed to act as a singular shield, allowing your Silverado or Sierra to slide over obstacles that would otherwise snag on exposed factory parts. At 85.1 lbs, this entire kit is lighter than just two comparable steel plates.
85.1 lbs Total Weight 6mm Aluminum thickness 100% Bolt-On Design 5 Plates Full Coverage
"The peace of mind this kit gives is incredible. I took my AT4 through some rocky trails in Moab, and these plates saved my transmission and gas tank multiple times. The install was exactly as advertised—bolt-on with no drilling. It's the best insurance policy you can buy for your truck."
- Marcus T., Sierra 1500 Owner*Repair costs are estimates. Does not include towing from the trail or vehicle downtime.
| Feature | ASFIR Full Kit | Factory / Plastic Skids |
|---|---|---|
| Coverage | ✓ 5-Plate (Total Underbody) | ✗ Front/Partial Only |
| Material | ✓ 6mm (1/4") Aluminum | ✗ 1-2mm Plastic or Steel |
| Installation | ✓ 100% No-Drill Bolt-On | Varies |
| Weight | ✓ 85.1 lbs (Total System) | ✓ Very Light but Weak |
| Serviceability | ✓ Ventilation & Drain Holes | ✗ Trap Heat & Debris |
Engineered specifically for the 5.3L half-ton chassis. Compatible with the following models:
2018+ Chevrolet Silverado 1500 (5.3L Gas) 2018+ GMC Sierra 1500 (5.3L Gas)Note: Not compatible with Diesel models or 3.0L engines. Designed for 4WD configurations. Check your manual for frame specifications if your truck has aftermarket suspension lifts.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
ASFIR designs their plates with serviceability in mind. The engine skid plate typically includes an access port for the oil drain plug. For full filter changes, the bolt-on design allows for the quick removal of individual plates in under 10 minutes.
These skid plates are designed to mount to factory chassis points. They fit perfectly with most standard leveling kits and mid-travel suspension systems. If your lift kit uses a massive drop-bracket for the front crossmember, minor modifications may be required.
Weight and corrosion. Aluminum is roughly 1/3 the weight of steel, which helps maintain your truck's payload and suspension performance. Additionally, aluminum will not rust once the finish is scratched, making it ideal for snowy or salty road conditions.
Yes. ASFIR engineers their kits to utilize original factory threaded holes or existing chassis slots. No drilling into your frame is required, which keeps your manufacturer warranty intact.
Minimal. ASFIR designs their plates to hug the chassis as tight as possible. In most areas, you will lose less than 1/4 inch of clearance, while gaining the ability to slide over obstacles that would otherwise snag on exposed factory components.
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
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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
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Questions? Give us a call today. (409) 916-8280
Fit and finish first class. I made an error on my initial order, reached out to customer service and they had everything squared away with just a couple of emails. Great communication on shipping and shipping progress. Would definitely use these folks again.
I'm happy with my new racks, it's perfect for that I want.
We are very happy the rack fits the painted roof of our ‘25 Bronco Heritage. Leitner right now might be the only company that makes a rack that fits the painted roof. Typical great Leitner attention to detail
We are very happy the rack fits the painted roof of our ‘25 Bronco Heritage. Leitner right now might be the only company that makes a rack that fits the painted roof. Typical great Leitner attention to detail.
I installed this on my M1102A trailer for organizing my camping gear and mounting my RTT and awning. It was a really easy install and was rock solid containing my gear down rugged dirt roads and washes last week. The sliding rear load bar was great for loading the motorcycles.
I installed this on my M1102A trailer for organizing my camping gear and mounting my RTT and awning. It was a really easy install and was rock solid containing my gear down rugged dirt roads and washes last week. The sliding rear load bar was great for loading the motorcycles.
I installed this on my M1102A trailer for organizing my camping gear and mounting my RTT and awning. It was a really easy install and was rock solid containing my gear down rugged dirt roads and washes last week. The sliding rear load bar was great for loading the motorcycles.
I’ve had the full-length rack on my Grenadier for about a year, and it has performed flawlessly. Not only is the design simple and aesthetically pleasing, it is highly practical for carrying any load. I consistently have over 400 lbs mounted on my rack at all times, and even through multiple trips through the washboards of Death Valley at 45 mph, the rack has remained steady and strong, with not one fastener coming loose. I’d buy this rack ten times before I’d consider another brand.
Limited space in bed. Now all my gear sits in the rack above. Made all the difference in what I can fit in this truck!!
needed something low profile but strong. This platform hit it out of the park. Put it on my ARE topper and couldn’t be happier! Assembly instructions could be clearer in showing top versus bottom, but got it together easy enough. Need to show the need for squaring up before mounting. Overall break pleased