The Westin 21-3920 Platinum 4 Oval Nerf Step Bars offer a sleek, durable upgrade for Ford F-150 and Super Duty trucks. With a 4-inch wide step area, no-drill installation, and high-quality stainless steel, these step bars enhance both functionality and appearance for easier access and vehicle protection.
OE-style oval tube design
4-inch recessed step area
Durable injection-molded step pads
No-drill, bolt-on installation
Protects rocker panels from damage
2015-2025 Ford F-150 Standard Cab Pickup
2017-2025 Ford F-250 Super Duty Standard Cab Pickup
2017-2025 Ford F-350 Super Duty Standard Cab Pickup
2019-2025 Ford F-450 Super Duty Standard Cab Pickup
2017-2025 Ford F-550 Super Duty Cab & Chassis
2020-2025 Ford F-600 Super Duty Cab & Chassis
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.
Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The Westin 21-3920 Platinum 4 Oval Nerf Step Bars are a stylish and durable upgrade for the 2015-2025 Ford F-150 Regular Cab, as well as several other Ford Super Duty models. Designed to enhance both the look and functionality of your vehicle, these step bars offer a sleek, OE-style appearance with a robust 4-inch wide step area for added convenience and safety. Ideal for those who want a more substantial step-up than traditional round tube steps, the Platinum 4 Oval Nerf Bars offer reliable performance with a no-drill installation process, ensuring a straightforward setup without the need for complex modifications.
These step bars are equipped with a recessed step area and injection-molded polymer step pads for optimal traction, protecting the vehicle’s rocker panels from potential damage. Offering both aesthetic appeal and practical utility, these bars provide easy access to your truck while enhancing its overall appearance. Whether you're looking for an upgrade or simply a functional solution to make entering and exiting your truck easier, the Westin Platinum 4 Oval Nerf Step Bars are the ideal choice.
OE-style oval tube design for a sleek, factory appearance
4-inch wide recessed step area for a secure and stable footing
Injection-molded polymer step pads for superior traction and durability
Mandrel-bent tubing ensures smooth, professional curves for an OEM-quality fit
Bolt-on, no-drill installation for quick and easy setup
Protects vehicle rocker panels from scratches and damage during entry and exit
Enhanced vehicle appearance: Adds a rugged, premium look to your Ford truck
Increased safety: Provides secure footing with the wide step area and textured pads
No-drill installation: Simple, easy-to-follow installation that doesn't require any vehicle modification
Protects your truck: Prevents potential damage to the truck’s rocker panels from daily wear
Durable construction: Crafted from high-quality stainless steel to withstand harsh conditions
Backed by a warranty: Comes with a limited lifetime warranty, ensuring long-lasting performance
Part Number: 21-3920
Material: Stainless Steel (SS)
Finish: Polished Stainless Steel for a sleek, premium look
Step Width: 4 inches
Type: Oval Tube Nerf Bars
Mounting Hardware: Includes a complete bolt-on kit for no-drill installation
Step Pads: Injection-molded polymer for enhanced grip and durability
Installation: No-drill, bolt-on installation (except for some vehicles that may require minimal drilling)
Fitment: Vehicle-specific designs for perfect fitment and function
Installing the Westin Platinum 4 Oval Nerf Step Bars is straightforward, with an estimated installation time of 1-2 hours. The no-drill design makes it simple for any enthusiast to install using basic hand tools, ensuring a hassle-free upgrade with minimal effort. Clear instructions are included, and the mount kit ensures that everything needed for installation is provided.
2015-2025 Ford F-150 Standard Cab Pickup
2017-2025 Ford F-250 Super Duty Standard Cab Pickup
2017-2025 Ford F-350 Super Duty Standard Cab Pickup
2019-2025 Ford F-450 Super Duty Standard Cab Pickup
2017-2018 Ford F-450 Super Duty Cab & Chassis - Conventional
2017-2025 Ford F-550 Super Duty Cab & Chassis - Conventional
2020-2025 Ford F-600 Super Duty Cab & Chassis - Conventional
For more information or if you have any questions regarding this product, or to report product description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
Year | Make | Model | Submodel |
---|---|---|---|
2015-2024 | Ford | F-150 | XL |
2015-2023 | Ford | F-150 | XLT |
2017-2024 | Ford | F-250 Super Duty | XL |
2017-2024 | Ford | F-250 Super Duty | XLT |
2017-2024 | Ford | F-350 Super Duty | XL |
2017-2024 | Ford | F-350 Super Duty | XLT |
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