Nerf Bars & Steps

Nerf bars versus other step types

Nerf bars are tubular or oval side rails mounted below the doors. Running boards are flatter and wider, and drop-down or power steps retract. Tubular bars are lighter, shed mud easily and are the usual choice on trucks and SUVs that see dirt. Sample listings here include 3 inch round bars, 6 inch oval bars, and wheel-to-wheel steps with cleated pads.

Subcategories cover bed and bumper steps, hitch steps, mounting kits and replacement parts, which is helpful if you need only a bracket set or step pad.

Choosing length and style

Length is the first decision:

• Cab length bars cover the door area only and leave the lower body mostly visible.
• Wheel-to-wheel bars run from the front wheel well to the rear and add protection along the whole rocker, which crew cab trucks often prefer.
• Step-pad spacing varies; some bars include individual pads at each door while others have a continuous tread.

Check the listing for the cab or door configuration, since regular, extended and crew cab trucks need different lengths.

Materials and finish

Steel is common because it is strong and holds up to being stepped on. Look for a powder coat, textured black or gloss black finish. Textured finishes hide scratches better than gloss. Stainless and polished options resist corrosion but show scuffs. Non-slip step pads help in wet or snowy conditions, and pads that sit in a recess keep metal from exposing as they wear.

Weight ratings differ by product and are not always stated, so use the manufacturer's rating if you plan to carry heavy loads or step on the bar often.

Fitment and installation

Most bars are vehicle-specific direct-fit kits. Many advertise no-drill installation using existing frame or body holes, but some trucks still need drilling. Confirm fitment for your year, make, model and cab style, and compare against the manufacturer's specifications.

Tighten brackets to the specified torque, check them periodically for loosening, and consider thread locker on hardware. A bar that sits too low can reduce ground clearance and take hits on trails, so choose a mounting height that matches how you drive. Lift height and tire size can change the ideal bracket setup.

Measuring, cleaning and common mistakes

Before choosing, measure the distance between the front and rear wheel wells on your truck and compare it with the length stated on the product page, then check how far below the door sill you want the step to sit. Most people find a step that sits a few inches under the door opening easiest to use.

• Rinse mud and road salt from the brackets and the underside of the tube, since trapped grit is what starts rust under a coating.
• Touch up chips in powder coat with a paint made for the finish.
• Do not use a nerf bar as a jacking point or tie-down unless the manufacturer says it is rated for that.
• Check that a bar does not block the factory jack points or the rocker pinch weld you rely on for lifting.