This listing covers the (Ridgeline Flat Board Metal) Running Board Nerf Bar For 16-22 Lexus RX350 RX350L RX450h RX450hL (AL20 4th Gen), one of the parts our fitment desk checks most often.

Towing components should be matched to the trailer weight rather than the vehicle capacity alone. Use thread lock on bracket bolts, since washboard roads back them out.
Ordering the ridgeline flat board metal takes a minute and the confirmation reaches you straight away.
Our team knows the ridgeline flat board metal well, so ask if anything about the specification is unclear.
Stock of the ridgeline flat board metal is live on this page rather than estimated.
Shops order the ridgeline flat board 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 ridgeline flat board metal against it.
The ridgeline flat board metal ships protected, because a damaged part helps nobody.
At a glance
- Category: Running Boards/Steps
- Price: $327.39 with free shipping over $99
- Availability: in stock, dispatched from the USA
Manufacturer specifications
Running boards give your ride a massive boost when it comes to look and utility. Combining the stylish appearance and rugged looks, these inventive running boards are the ideal way to upgrade your truck or SUV. They are built tough and are highly corrosion resistant. Getting in and out of your vehicle is easy with the large non-skid molded pads that ensure secure footing. No drill installation! These running boards are very easy to install with the brackets fitting right into the existing factory holes. By not having to not drill in to your vehicle, your time and effort is saved by you.
- Material: Aluminum Board / ABS Plastic End Caps & Pads
- Color: Metallic / Black
- Finish: Rubberized Brushed Aluminum
- Style: Ridgeline Flat Board
- Measurement: 73″ Total Length
- Step Pads: 5.5″ Wide Full Length Rubberized Slip-Resistant Step Pads
- Loading Capacity: 350LBs Max Capacity
- Built From Durable, Rust-Resistant
- Vehicle Dedicated Fit Steel Mounting Brackets Included
- Vehicle Specific Steel Mounting Brackets Included
- All Necessary Hardware Included for a Complete Installation
- Custom Fit Direct Bolt-on Applications with No Drilling Required (Most Models)
Application:
For 2016-2022 Lexus RX350 (AL20 4th Gen)
For 2018-2022 Lexus RX350L (AL20 4th Gen)
For 2016-2022 Lexus RX450h (AL20 4th Gen)
For 2016-2022 Lexus RX450hL (AL20 4th Gen)
Remark:
Installation: Dedicate Mounting Bracket, No Drilling
Product Content:
- 1 Pair of Running Board (Left & Right Side) as shown in the Picture above
Come with a Pack of Dedicated Mounting Hardware
The product does not come with manual/instruction, Professional Install Recommended
Cross Reference Number:
- BFC-RUNB-826
Fitment questions get answered by people who work with these parts daily, usually the same business day.
More in this department: Running Boards & Towing · 87″ Chrome/6″ Oval Tube Running Board Nerf Step Bar 10387C For 22+ Toyota Tundra CrewMax Cab (XK70) · 87″ Black/6″ Oval Tube Running Board Nerf Step Bar 10387 For 22+ Toyota Tundra CrewMax Cab (XK70) · full catalog
Every parcel carries tracking that updates with each carrier scan until it reaches your door.
For neutral background on this kind of maintenance, see the NHTSA vehicle safety hub.
Before you order
Will this part fit my vehicle?
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.
How long does delivery take?
We ship from a USA warehouse with quick dispatch, and delivery estimates appear at checkout once you enter your address.
Is there a warranty on this?
If the part does not fit, message our support desk with the order number and we will arrange an exchange or refund. Keep the packaging until the test fit is done.
How do you verify this part?
Boards and towing gear are verified against your cab and bed configuration before dispatch.

![(Straight Design Black) Running Board Nerf Bar For 04-14 Ford F-150 (P221 11th, P415 12th Gen) [Extended Cab]](https://partsmithco.com/wp-content/uploads/2026/07/XUR-STEPB-4-885-BK-300x300.jpg)

![(Straight Design Black) Running Board Nerf Bar For Ford 15+ F-150 / 17+ F-250 F-350 Super Duty [Crew Cab]](https://partsmithco.com/wp-content/uploads/2026/07/STEPB-4-888-BK_1-300x300.jpg)
Reviews
There are no reviews yet.