Buying the (Curved End Metal) Running Board Nerf Bar For 05-21 Nissan Frontier (D40 2nd Gen) [Extended Cab] should be simple, so here are the facts without the marketing noise.
![(Curved End Metal) Running Board Nerf Bar For 05-21 Nissan Frontier (D40 2nd Gen) [Extended Cab]](https://partsmithco.com/wp-content/uploads/2026/07/STEPB-3-053-SS_1-1.jpg)
Cab and bed configuration decide fitment, and a crew cab part will not serve an extended cab. Use thread lock on bracket bolts, since washboard roads back them out.
Shops order the curved end metal from us in volume because the data on the page is accurate.
If your build is unusual, tell us and we will confirm the curved end metal against it.
The curved end metal ships protected, because a damaged part helps nobody.
Details that matter
- Category: Running Boards/Steps
- Price: $202.27 with free shipping over $99
- Availability: in stock, dispatched from the USA
Every order gets a fitment review before dispatch, and anything doubtful gets a message rather than a shipment.
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We ship fast from our own shelves, and tracking reaches your inbox as soon as the carrier receives the parcel.
Before you start the job, the NHTSA tire safety guide is worth five minutes.
Before you order
What do you need to verify fitment?
Trim level, engine option and drive type decide most fitment questions. Send those three details or the VIN and we will check them for you.
Do you ship the same day?
Dispatch is normally the same or next business day, and heavy items travel on freight with a booked delivery window.
How do returns work here?
Report any transit damage with a photo and we will send a replacement or refund you. We handle the carrier claim ourselves.
What quality checks does this get?
Boards and towing gear are verified against your cab and bed configuration before dispatch.
![(Straight Design Black) Running Board Nerf Bar For 99-19 Silverado/Sierra [Standard Cab]](https://partsmithco.com/wp-content/uploads/2026/07/XUR-STEPB-4-883-BK-1-300x300.jpg)
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