







Westin Pro-Traxx 5" Oval Wheel-to-Wheel Nerf Step Bars for 2015-2020 Ford F-150 SuperCab 6'6" Bed
We guarantee this part will fit your vehicle or you can return it for free. Learn more
Free gifts included with your order
- Guaranteed FitmentTeam-confirmed fit or money back
- No Sales TaxZero sales tax on every order
- 30-Day Money-Back GuaranteeReturn it within 30 days of delivery for a refund

Questions or a custom quote?
Mon to Fri, 9am to 5pm EST
Complete your upgrade
Fits the same truck
Features
- 5" Oval Tube: Westin builds the Pro-Traxx 5 around a 5" oval tube, a profile that sits close to the rocker panel while still giving a full-width place to put your foot. The bars also help protect the rocker panels from damage.
- Molded Step Pads: Each step gets an injection-molded polymer pad. Westin describes it as a heavy-duty pad that gives a wider, more secure step area; on the cab-length bars the pads are 4" wide.
- Domed Ends, Factory-Style Bends: Both ends turn in with a 30-degree factory-style bend and finish in a fully welded, seamless domed end, so there are no end caps to lose and no exposed bolt heads.
- Two Finishes: Most Pro-Traxx 5 fitments come in polished stainless steel or in steel with a black powder coat. The finish is chosen at checkout on each listing.
- Cab Length or Wheel to Wheel: Cab-length bars cover the cab doors and suit every bed length on that cab. Wheel-to-wheel bars are cut for a specific bed length, run to the rear wheel and add a third step for reaching into the bed.
- Bolt-On Mount Kit: A vehicle-specific mount kit is included. Installation is bolt-on with no drilling required on most applications, and wheel-to-wheel bars include molded bracket covers on most applications.
Description & Fitment
Westin's wheel-to-wheel Pro-Traxx 5 for the 2015-2020 Ford F-150 SuperCab with the 6'6" bed runs a 5" oval tube from behind the front wheel back to the rear wheel on each side. Past the cab, Westin adds a third step pad so you can reach into the bed from the side. Pick polished stainless steel for a bright finish or black powder-coated steel to match dark trim. The mount kit is included and bolts on with no drilling on most applications; molded covers hide the brackets on most trucks.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 2015-2020 | F-150 | SuperCab 78.9 Bed |
Check your truck: SuperCab with the 78.9" (6'6") bed, 2015-2020. The SuperCrew with the same bed takes 21-534635. The 2021 and newer F-150 is not covered.
About Westin
Westin Automotive Products, Inc. builds exterior accessories for pickups, SUVs and Jeeps, including nerf step bars, running boards, side bed steps, hitch steps and rock sliders. The Pro-Traxx line is Westin's oval nerf step bar range, offered in 4", 5" and 6" tube sizes with molded step pads.
Frequently Asked Questions
Will 21-534610 fit a 2021 F-150 SuperCab?
No. Westin lists 2015-2020 F-150 SuperCab trucks with the 6'6" bed only.
What is the difference between cab length and wheel to wheel?
Cab-length bars cover the cab doors and end at the back of the cab, so one part fits every bed length for that cab. Wheel-to-wheel bars run back to the rear wheel, are cut for one bed length and add a third step for reaching into the bed.
What does the 5 in Pro-Traxx 5 mean?
It is the tube size: Pro-Traxx 5 bars use a 5" oval tube. Westin also makes Pro-Traxx 4 and Pro-Traxx 6.
Do I have to drill my truck?
Westin lists the installation as bolt-on with the mount kit included and no drilling required on most applications. Check the instructions in the box for your truck before you start.
Polished stainless or black: what is the difference?
The polished version is stainless steel with a bright finish. The black version is steel with a black powder coat. Tube size, step pads and fit are the same.
Are there end caps that can fall off?
No. The ends are fully welded, seamless domes with a 30-degree factory-style bend, so there are no end caps or exposed bolt heads.
Installation
Stuck on a step?
- Two Pro-Traxx 5 step bars, driver and passenger side
- Vehicle-specific mount kit with hardware
- Molded bracket covers (most applications)
Specifications
| Brand | Westin |
|---|---|
| Product Line | Pro-Traxx 5 |
| Product Type | Oval nerf step bars |
| Tube | 5" oval |
| Step Pad | Injection-molded polymer, with a third step for bed access |
| Ends | 30-degree factory-style bends, fully welded domed ends |
| Mounting | Bolt-on, vehicle-specific mount kit included; no drilling on most applications |
| Finish | Polished stainless steel or black powder coat |
| Material | Stainless steel (Polished Stainless); steel (Black) |
| Length | Wheel to wheel, for the 6'6" bed |
| Part number | 21-534610 |
| UPC | 707742064702 |
| Part # | Finish | UPC |
|---|---|---|
| 21-534610 | Polished Stainless | 707742064702 |
| 21-534615 | Black | 707742064672 |
Warranty, shipping & returns
-
Warranty
Westin backs its Pro-Traxx 5 Oval Nerf Step Bars with a lifetime warranty on the polished stainless steel bars and a 3-year warranty on the black powder-coated bars, for the original purchaser, against manufacturer defects in materials, workmanship and finish under normal use.- The term follows the finish of the part number you buy, shown in Specifications.
- Westin's terms exclude road-hazard damage (gravel, debris), misuse, improper installation, accidents, modifications and neglect; the remedy is repair or replacement.
- For a claim, contact us with your order number and photos and we will work it through with Westin.
-
Free shipping
Ships in 1-5 business days.- The bars ship boxed as a pair, with the mount kit and hardware in the carton.
- Tracking is emailed as soon as the order leaves the warehouse.
-
Inspect on delivery
Open the box when it arrives, check both bars and the step pads for finish damage, and confirm the mount kit and hardware are there before you start. If anything is damaged or missing, contact us with photos right away. Check it as soon as it arrives.- Look for crushed ends, punctures or tears in the carton.
- If something looks wrong, take photos of the box and the parts (and if a driver asks you to sign, note the damage on the receipt).
- Open the box and check the parts against the parts list before you install.
- Email support@prestigetruck.com right away with your order number, a short note and photos. We send a replacement or a full refund at no cost to you.
-
30-day returns
Return it within 30 days of delivery, unused, in the original packaging, with proof of purchase.- Email support@prestigetruck.com with your order number. We reply within 1-2 business days with instructions.
- Damaged, defective or wrong item: we send a prepaid label or arrange a pickup.
- Changed your mind: you pay return shipping. No restocking fee.
- Refunds go back to your original payment method within 7 business days of approval. See our returns policy.









