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6mm Heavy-Duty Aluminum. 100% Bolt-On. Professional Drivetrain Defense.
Shield Your Subaru’s Most Vulnerable PointThe ASFIR 4X4 Rear Differential Protector is engineered for the Subaru owner who refuses to let a rocky trail end their adventure. On the Forester, Outback, and Crosstrek, the rear differential sits low, making it an easy target for jagged rocks, stumps, and deep ruts. A single impact can crack the housing, leading to catastrophic oil loss and a multi-thousand dollar repair bill.
Manufactured from high-grade 1/4" (6mm) laser-cut aluminum, this skid plate provides industrial-strength protection without the weight penalty of steel. It is a precise, vehicle-specific shield that ensures your Symmetrical AWD system stays sealed and safe, wherever the trail takes you.
Why ASFIR Protection:The Pain: The rear differential is one of the most expensive components to repair and the easiest to damage when high-centering. Factory protection is non-existent.
The ASFIR Solution: We provide a 6mm thick aluminum barrier reinforced with stiffening ribs. It installs in minutes using a 100% Bolt-On design, allowing your vehicle to "skid" over obstacles rather than snagging them.
Key Features: ASFIR Drivetrain Armor
Designed to utilize existing factory mounting points. No permanent modifications or holes in your chassis are required, preserving resale value.
Twice the thickness of standard guards. Premium 1/4" aluminum provides extreme impact resistance while weighing only 9 lbs.
Engineered to fit both standard and Wilderness trims of the Forester and Crosstrek, providing an upgrade over factory composite guards.
Strategic ventilation slots reduce heat build-up around the differential, ensuring safe operating temperatures during long highway or trail drives.
Equipped with drain holes to allow mud, water, and debris to escape easily, preventing the buildup of corrosion-causing sludge.
All chassis mounting hardware is zinc-coated steel to prevent rust in harsh, salted-road winter environments.
Over-Engineered for SurvivalDeveloped and tested in the rocky terrain of the Middle East, ASFIR armor is built to endure. The Rear Diff Protector features internal stiffening ribs that increase structural rigidity, ensuring the plate holds its shape during vertical impacts. At just 9 lbs, it adds no noticeable strain to your vehicle, while the smooth surface allows you to skid over obstacles that would otherwise snag the differential.
9 lbs Lightweight 6mm Aluminum Plate 100% Bolt-On Fit Wilderness Ready
"The peace of mind is worth every penny. I high-centered my Forester Wilderness on a trail in Colorado—I heard the 'clunk' and expected a leak, but the ASFIR plate took the hit perfectly. It’s light, rigid, and the install took me 20 minutes in my driveway. Every off-road Subaru needs this."
- Mark T., Forester Wilderness Owner*Estimated repair costs for 2019+ Subaru models. Preventing one trail accident pays for the skid plate multiple times over.
| Feature | ASFIR Rear Diff Protector | Generic / Plastic Guards |
|---|---|---|
| Thickness | ✓ 6mm (1/4") Aluminum | ✗ 2-3mm or Composite |
| Structural Support | ✓ Pressed Stiffening Ribs | ✗ Flat Sheet Metal |
| Installation | ✓ 100% Bolt-On (No Drill) | Varies |
| Corrosion Protection | ✓ Aluminum & Zinc Brackets | ✗ Standard Steel Rusts |
| Manufacturing | ✓ Made in Israel | Imported Mass-Market |
Specifically engineered for the Subaru Global Platform. Fits the following models:
Subaru Crosstrek: 2018 - 2026 (Including Wilderness 2.5L) Subaru Forester: 2019 - 2026 (Including Wilderness 2.5L) Subaru Outback: 2020 - 2025 (2.5L Gas Models)Professional Installation Tip: Recommended for use as part of ASFIR's full underbody protection kit (Engine, Transmission, and Fuel Tank plates) for ultimate trail security.
CA Residents: ⚠️ WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
No. The ASFIR protector is designed with integrated ventilation slots. These air vents allow consistent airflow around the differential case to maintain factory operating temperatures, even during heavy towing or trail use.
No. This is a 100% No-Drill system. It utilizes existing factory holes and threads on your Subaru's chassis. You can install it at home with standard hand tools in about 20-30 minutes.
The protector is designed for maximum coverage. While some owners may access the plug through ventilation slots, we recommend dropping the plate (only a few bolts) for a clean, mess-free differential fluid change.
Clearance loss is minimal. The ASFIR plate is contoured tightly to the differential housing. Because it provides a smooth "sliding" surface, it often improves trail performance by letting you glide over obstacles that would otherwise catch on the chassis.
The ASFIR Rear Diff Protector sits far enough forward of the rear bumper area that it is compatible with most standard aftermarket and OEM tow hitches.
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
