Westin Pro-Traxx 4" Oval Nerf Step Bars for 1999-2016 Ford F-250 / F-350 Super Duty SuperCab
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Molded Pro Traxx Step Pads
4-Inch Oval Tube
Vehicle-Specific Brackets
Features
- Molded Pro Traxx Step Pads: Westin's 4"-wide injection-molded polymer step pads sit on top of the 4" oval tube, with a raised traction pattern that gives a wider, surer footing than a bare tube.
- 4-Inch Oval Tube: The 4" oval tube keeps a slim profile along the cab while leaving plenty of flat area for the step pads, a size Westin builds for full-size and midsize trucks and SUVs.
- Vehicle-Specific Brackets: Each Pro-Traxx 4 listing is built for one truck and cab. Westin includes the vehicle-specific mount kit, and the bars bolt on with no drilling on most applications.
- Fully Welded Domed Ends: Both ends turn in with 30-degree factory-style bends and close with seamless, fully welded domes, so there are no end caps to lose and no exposed bolt heads.
- Rocker Panel Protection: Running cab length beside the rocker panels, the bars sit between the body and trail debris, which Westin notes helps protect the rockers from damage.
- Stainless or Black: Choose polished 304 stainless steel, which Westin covers for life, or black powder coat over e-coated steel with a 3-year Westin warranty. Availability depends on the truck listing.
Description & Fitment
Made for the 1999-2016 Ford F-250 and F-350 Super Duty SuperCab, this Westin Pro-Traxx 4 pair runs cab length beneath the front doors and the rear half doors. The same bars fit 2002-2016 F-450 and F-550 Super Duty cab-and-chassis trucks with the extended cab. Order them in polished 304 stainless steel or black powder coat, each topped with Westin's 4"-wide molded step pads. The vehicle-specific mount kit is included, and Westin says most installs need no drilling.
Fitment & Compatibility
| Years | Model | Bed | Notes |
|---|---|---|---|
| 1999 | F-250 Super Duty | SuperCab | |
| 1999-2016 | F-250 Super Duty | SuperCab | |
| 1999-2016 | F-350 Super Duty | SuperCab | |
| 2002-2016 | F-450 Super Duty | Extended Cab, Cab & Chassis | |
| 2002-2016 | F-550 Super Duty | Extended Cab, Cab & Chassis |
Check your truck: SuperCab (extended cab with rear half doors) only. Listed: 1999-2016 F-250 / F-350 Super Duty SuperCab, 1999 F-250 SuperCab, and 2002-2016 F-450 / F-550 Super Duty cab and chassis with the extended cab. A 1999-2016 Super Duty Crew Cab takes 21-21330; a 2017-up Super Duty SuperCab takes 21-23930.
About Westin
Westin Automotive designs and engineers its Pro-Traxx step bars in San Dimas, California. Westin makes nerf bars, steps and running boards for pickups, Jeeps and SUVs, along with tonneau covers, bed and roof racks, wind deflectors and Superwinch winches.
Frequently Asked Questions
Will 21-21310 fit my 2018 F-250 SuperCab?
No. It is listed through the 2016 model year. For 2017-up Super Duty SuperCab trucks, Westin lists Pro-Traxx 4 part 21-23930.
What is the difference between the stainless and black finishes?
The polished finish is 304 stainless steel with a lifetime Westin warranty. The black finish is a powder coat over e-coated steel with a 3-year Westin warranty. Tube size, step pads and brackets are the same.
Do I have to drill my truck?
Westin lists these as bolt-on with the mount kit included and no drilling required on most applications. Check the fitment notes on your truck's listing.
How far do the bars reach?
Pro-Traxx 4 bars are cab length: they run under the doors, not from wheel well to wheel well, so they will not reach the bed.
Are there end caps that can come loose?
No. Westin closes each end with a 30-degree bend and a seamless, fully welded dome, with no end caps or exposed bolt heads.
What are the step pads made of?
They are 4"-wide injection-molded polymer pads with a raised traction pattern, fixed on top of the 4" oval tube.
Installation
Stuck on a step?
- Driver- and passenger-side Pro-Traxx 4 oval step bars
- Vehicle-specific mount kit with brackets and hardware
Specifications
| Brand | Westin |
|---|---|
| Product Line | Pro-Traxx 4 |
| Type | Oval nerf step bars |
| Tube | 4" oval |
| Step Pads | 4"-wide injection-molded polymer |
| Bar Length | Cab length |
| Ends | 30-degree bends, fully welded domed ends |
| Mounting | Rocker panel area, bolt-on; mount kit included |
| Tube Size | 4" oval |
| Finish | Polished 304 stainless steel or black powder coat over e-coated steel |
| Part number | 21-21310 |
| UPC | 707742047668 |
| Part # | Finish | UPC |
|---|---|---|
| 21-21310 | Polished Stainless | 707742047668 |
| 21-21315 | Black | 707742047675 |
Warranty, shipping & returns
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Warranty
Westin backs its Pro-Traxx 4 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.
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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.
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Inspect on delivery
Open the carton when it arrives, check both bars and the step pads for finish damage, and count the brackets and hardware before you start. If the driver asks you to sign, note any damage on the delivery receipt. 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.
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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.