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15-25 Ford F-150 SuperCab Westin 21-3935 Platinum 4 Oval Nerf Step Bars - Black

Boost both style and function with Westin’s 4" Oval Nerf Step Bars for the Ford F-150 SuperCab. Featuring a wide non-slip step surface, durable black finish, and easy bolt-on install, they offer superior access and rocker panel protection.

Top Features

  • 4" oval OE-style tubing with mandrel bends

  • Recessed injection-molded step pads for secure footing

  • Durable black E-coated finish resists corrosion

  • No-drill, bolt-on installation with included mount kit

  • Protects rocker panels from road debris

  • Backed by a 3-year finish warranty

Vehicle Fitment

  • 2015–2025 Ford F-150 SuperCab Pickup

  • 2017–2025 Ford F-250 Super Duty SuperCab Pickup

  • 2017–2025 Ford F-350 Super Duty SuperCab Pickup

  • 2017–2025 Ford F-450 Super Duty Cab & Chassis – Extended Cab

  • 2017–2025 Ford F-550 Super Duty Cab & Chassis – Extended Cab

For questions or to report description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.

Vendor: Westin
SKU: WES21-3935
Availability: 8 In Stock
$ 503.75 USD
On-Sale $ 503.75 USD
Normally
Better hurry, only 8 left in stock.

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UPC: 707742064368
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Proposition65 Warning: Cancer and Reproductive Harm

15‑25 Ford F‑150 SuperCab Westin 21‑3935 Platinum 4 Oval Nerf Step Bars ‑ Black**

The Westin 21‑3935 Platinum 4 Oval Nerf Step Bars offer a commanding blend of rugged style and everyday utility ideal for Ford F‑150 SuperCab owners. Their robust 4‑inch wide oval tubing with OE-inspired mandrel bends provides secure footing and protects rocker panels, while the sleek black finish enhances the truck’s look. With a vehicle‑specific, no‑drill bolt‑on installation and an included mount kit, these step bars are engineered to impress from appearance to performance.

Key Features

  • OE‑style 4″ oval tubing with precision mandrel bends

  • Wide 4″ recessed, injection‑molded polymer step pad for superior foot traction

  • Bolt‑on, no‑drill installation using included mount kit

  • Rocker‑panel protection built into design

  • Durable black E‑coat finish resists corrosion

  • Vehicle‑specific application ensures perfect fit

Benefits

  • Enhances cab access: the wide step significantly eases entry and exit

  • Stylish upgrade: sleek black oval design complements vehicle aesthetics

  • Lasting protection: shields rocker panels from rocks, road debris

  • Quick installation: bolt‑on setup reduces labor time and preserves vehicle integrity

  • Backed by warranty: includes Westin's 3‑year finish warranty

  • Peace of mind: “Westin Automotive Products, Inc. guarantees the original purchaser […] a three year warranty from the date of original purchase against manufacturer defects in materials, workmanship and finish”

Product Specs

  • Size: 4 inch oval tubing; approx. 4.25 inch at the widest point

  • Step Pad: 4 inch injection‑molded polymer, recessed

  • Material: E‑coated mild steel (black); polished stainless option sold separately

  • Finish: Textured black powder‑coat over e‑coated steel

  • Mounting: Included brackets, hardware kit; no drilling required on most Ford F‑150 models

  • Warranty: 3 years (black finish); lifetime available on stainless version

Install Difficulty Level
Installation is straightforward and user‑friendly. Most owners report completion in 30 to 60 minutes per side. All hardware and brackets are supplied, and the bolt‑on, no‑drill setup further simplifies the process—no fabrication or drilling required.

Vehicle Fitment

  • Year Range: 2015–2025

  • Make: Ford

  • Model: F‑150 SuperCab Pickup

  • Engine: Compatible with all factory‑specified engines for SuperCab (V6, EcoBoost, V8)

To inquire further or report any inaccuracies in this product description, contact the MPT Performance experts at (407) 636‑7077 or by email.

Shipping Policy

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 orders outside the contiguous US, and the buyer is 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 your order. We use all major carriers, including USPS, FedEx, UPS, and DHL.

Turnaround Times:

  • MPT Tunes have a standard turnaround time of 2-3 business days, beginning once we receive your MPT Tune Form.
  • We do not process orders on weekends or observed holidays, which do not count as business days.
  • Physical items that are in stock at MPT and ordered by 4PM EST will be shipped the same day. Orders placed after 4PM EST will be processed on the following business day.

Special Considerations:

  • Items not stocked at our location will follow the same processing times but may experience lead-time delays and could incur additional charges. Shipping methods may vary for these items based on what was paid and the requested delivery speed. If you need an item by a specific deadline, please contact an MPT Expert.
  • SCT Tuner Orders with the Prioritized Order option must have their tune forms submitted by 3PM EST to be completed the same day. Forms submitted after this time will be processed the next business day.
  • Orders will ship to the billing address listed on your order. If paying by credit or debit card, we can only ship to the billing address. Contact an MPT Expert for assistance if you need a different shipping address.

MPT Performance Returns and Refund Policy

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
2015-2023 Ford F-150 Lariat
2017-2020,2022 Ford F-150 Raptor
2016-2024 Ford F-150 SSV
2024 Ford F-150 STX
2015-2024 Ford F-150 XL
2015-2024 Ford F-150 XLT
2017-2024 Ford F-250 Super Duty Lariat
2017-2024 Ford F-250 Super Duty XL
2017-2024 Ford F-250 Super Duty XLT
2017-2024 Ford F-350 Super Duty Lariat
2017-2024 Ford F-350 Super Duty XL
2017-2024 Ford F-350 Super Duty XLT

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