Heavy-Duty Running Boards: Frame Mounts, Rated Load and What 'Heavy Duty' Does Not Promise

People use "heavy duty" for two different things: a tough step, or a step for a heavy-duty truck like a 2500 or F-350. The first has no definition behind it. The second is just a question of what the listing names. We take them in that order, then point you to the part.

Fit sheetOur pick: F-150 SuperCrewAd

Tyger Auto

Tyger Riser 6" (F-150 SuperCrew)

A 6-inch step with a maker sheet that deals with Ford's aluminum body.

Why here: It is a 6-inch step whose title names the F-250 and F-350, and whose maker sheet we could read. It states no load rating, so nothing here is rated.

Fits, according to the listing

2015-2027 Ford F-150; 2022-2025 F-150 Lightning; 2017-2027 F-250 F-350 SD | Supercrew Cab (as of November 2, 2026)

Style

Running board / step bar (as titled)

Material

Not stated in the title

Weight rating

Not stated in the title

Install

Bolt-on to factory studs with plastic retainers; no drilling step in the sheet; assistance recommended

Price class

Mid-range

Check your exact year and cab on the listing before you buy.

Why it makes the list

• Part number (TG-RS6F60118) ties it to Tyger's instruction sheet
• Sheet uses plastic retainers to prevent corrosion between the aluminum body panel and steel brackets
• No drilling step in the sheet

Watch out for

• Not for the SuperCab per the title
• No weight rating in the title, so none is printed here
• The sheet says to clear paint or undercoating from the studs first

Best for: SuperCrew owners on the 2015-up F-150 who want a wide step and a clear install sheet.

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"Our pick" means we read a maker sheet for the part. It does not mean this part carries more load than another, because neither the title nor the sheet says.

What makers actually state

Here is how the phrase plays out in the documents we read on 2 November 2026:

Look at the third and fourth rows. Those pages use the words heavy duty and give you no load number at all. And a figure only means something on the maker's own basis, which is why we do not rank these against each other. A product page is also not a test report, and we run no tests.

We leave out two kinds of number. Seller titles print load figures with no stated basis, and dealer pages disagree with each other, so neither gets printed here. WOLFBOX's page for the F-150 and Super Duty part below would not open for us, so we print no figure for that part. Its Chevy/GMC and Ram pages are a different matter, and that figure stays with those parts. Ask for the document.

How much weight running boards can hold goes deeper on the numbers.

What frame mounted does and does not tell you

Plenty of people search for frame-mounted steps on the assumption that they are stronger. Here is what we can back up.

The sheets we read attach to the body. Tyger's Riser sheet uses factory studs in the body panel and on the pinch trim. Its Rider sheets use threaded holes along the bottom edge of the body, studs on the panel's inner sidewall, clip nuts, or the pinch weld. None mentions the frame.

Most maker pages do not say. Westin's HDX Drop page says vehicle-specific brackets position the bars close to the rocker panels, and it does not name the frame. Its Pro-e page says bolt-on with vehicle-specific brackets.

The frame mounts we saw stated were on rock sliders. Westin's install sheet for its XTS slider puts it on the frame rail of a Tacoma. Body Armor 4x4 and C4 Fabrication also describe frame-mounted Tacoma sliders, but we read those only as search excerpts, because the pages would not open for us. If you want frame-mounted protection, you probably want rock sliders, and rock sliders vs running boards sets out the trade.

We found no Amazon-listed step in our data whose title states a frame mount. That does not mean none exists. And a frame mount describes the attachment. It is not a rating in itself.

Which part for which heavy-duty truck

If you came here because you drive a 2500, 3500, F-250 or F-350, the title decides it. Fit below is according to the listing, read 2 November 2026. Each of these trucks has its own page: Silverado HD, Ram 2500 and Super Duty. If you are unsure how to read a title, see how to check a listing fits.

What do you drive?

• If you drive a 2017-up F-250 or F-350 SuperCrew, or a 2015-up F-150 SuperCrew → Tyger Riser 6" (F-150 SuperCrew)

  Fits, according to the listing: 2015-2027 Ford F-150; 2022-2025 F-150 Lightning; 2017-2027 F-250 F-350 SD | Supercrew Cab. Check your exact year and cab on the listing before you buy.

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• If you drive a 2020-up Silverado or Sierra 2500 or 3500HD crew cab → Tyger Rider 3.5" (2019+ GM)

  Fits, according to the listing: 2019-2026 Chevy Silverado GMC Sierra 1500; 2020-2027 2500 3500HD | Crew Cab. Check your exact year and cab on the listing before you buy.

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• If you want a textured rail on the same GM crew cabs → Tyger Trax (2019+ GM) · Listing data only

  Fits, according to the listing: 2019-2026 Chevy Silverado GMC Sierra 1500; 2020-2027 2500 3500HD | Crew Cab. Check your exact year and cab on the listing before you buy.

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• If you drive a new-body Ram 1500 crew cab → Tyger Trax (2019+ Ram 1500) · Listing data only

  Fits, according to the listing: 2019-2027 Ram 1500 (Not fit 19-24 Classic) | Crew Cab. Check your exact year and cab on the listing before you buy.

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• If you want a power step on a 2021-up F-150 SuperCrew → WOLFBOX Power (2021+ F-150) · Listing data only

  Fits, according to the listing: 2021-2027 F150 Supercrew Cab | 2021-2027 F150 Lightning EV/F250/F350/F450/F550. Check your exact year and cab on the listing before you buy.

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• If you want a power step on a Ram 2500 or 3500 crew cab → Rough Country Power (Ram 2500/3500) · Listing data only

  Fits, according to the listing: Ram 2500/3500 (2010-2026) Crew Cab. Check your exact year and cab on the listing before you buy.

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• If you drive something else

  All trucks

Comparison: Tyger Riser 6" (F-150 SuperCrew), Tyger Rider 3.5" (2019+ GM), Tyger Trax (2019+ GM), Tyger Trax (2019+ Ram 1500), WOLFBOX Power (2021+ F-150)

Spec sheet	Our pick: F-150 SuperCrewTyger Riser 6" (F-150 SuperCrew)	Our pick: Silverado and Sierra crewTyger Rider 3.5" (2019+ GM)	Listing data onlyTyger Trax (2019+ GM)	Listing data onlyTyger Trax (2019+ Ram 1500)	Listing data onlyWOLFBOX Power (2021+ F-150)
Fits, according to the listing	2015-2027 Ford F-150; 2022-2025 F-150 Lightning; 2017-2027 F-250 F-350 SD | Supercrew Cab	2019-2026 Chevy Silverado GMC Sierra 1500; 2020-2027 2500 3500HD | Crew Cab	2019-2026 Chevy Silverado GMC Sierra 1500; 2020-2027 2500 3500HD | Crew Cab	2019-2027 Ram 1500 (Not fit 19-24 Classic) | Crew Cab	2021-2027 F150 Supercrew Cab | 2021-2027 F150 Lightning EV/F250/F350/F450/F550
Style	Running board / step bar (as titled)	Rail / nerf bar (as titled)	Rail / nerf bar (as titled)	Rail / nerf bar (as titled)	Powered retractable step (as titled)
Material	Not stated in the title	Not stated in the title	Not stated in the title	Not stated in the title	Not stated in the title
Weight rating	Not stated in the title	Not stated in the title	Not stated in the title	Not stated in the title	Not stated in the title
Install	Bolt-on to factory studs with plastic retainers; no drilling step in the sheet; assistance recommended	Bolt-on with 8 brackets; no drilling step in the sheet; assistance recommended	Not stated in the title	Not stated in the title	No-drill (listing title)
Price class	Mid-range	Mid-range	Mid-range	Mid-range	Premium
Best for	SuperCrew owners on the 2015-up F-150 who want a wide step and a clear install sheet.	Crew cab owners on the 2019-up GM full-size who want a rail with a readable install sheet.	GM crew cab owners comparing Tyger rails.	New-body Ram 1500 crew owners comparing Tyger rails.	2021-up F-150 SuperCrew owners who accept seller claims without a maker sheet.
	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon	On Amazon*(paid link to Amazon, opens in a new tab)Ad · paid link · check price & delivery on Amazon

The parts, one by one

Tyger Riser 6-inch

The title reads "2015-2027 Ford F-150; 2022-2025 F-150 Lightning; 2017-2027 F-250 F-350 SD", Supercrew Cab. Part number TG-RS6F60118 leads to Tyger's sheet. It uses factory studs, front and rear brackets plus 6 support brackets, and plastic retainers that Tyger says prevent corrosion between the aluminum body panel and steel brackets. The sheet has no drilling step, and it says assistance is recommended.

Strength: a wide step with a real sheet. Weakness: no load rating, and the title says Supercrew, so it does not name your SuperCab.

Tyger Rider 3.5-inch for GM

This rail is titled for 2019-2026 Silverado and Sierra 1500 and 2020-2027 2500 and 3500HD, Crew Cab. Tyger's sheet for TG-SS2C35068 uses 8 brackets on threaded holes behind plugs. It has no drilling step.

Strength: the part number leads to the sheet, and the title spells out the HD years. Weakness: at 3.5 inches, it is narrow, and it states no load.

Tyger Trax for GM and Ram

The Trax comes as a textured black rail. The GM part^* is titled for the same 2019-up crew cabs as the Rider, under TG-TX7C29758. The Ram part^* is titled "2019-2027 Ram 1500 (Not fit 19-24 Classic)", Crew Cab, under TG-TX7D29398.

Be clear on what that means. Neither title says heavy duty or names a frame mount, and we could not read a sheet for either. These parts are options if you like the look and your truck is named.

Strength: clear year and cab wording, and a Tyger part number. Weakness: listing data only.

WOLFBOX power step for F-150 and Super Duty

The WOLFBOX^* is a powered step titled "2021-2027 F150 Supercrew Cab | 2021-2027 F150 Lightning EV/F250/F350/F450/F550". The title states no-drill and a 5-year warranty, and those are the seller's words. The title gives no cab for the bigger trucks. Price class: premium.

Strength: names trucks most parts skip. Weakness: we read no maker sheet, and "power" is a different trade from "heavy duty": a motor and a harder install.

Rough Country power step for Ram 2500 and 3500

The Rough Country^* is titled for "Ram 2500/3500 (2010-2026) Crew Cab", with dual motors and LED step lights. Rough Country's own page would not open for us, so we print no load figure and no install details. See power running boards for how powered steps compare.

Strength: a powered option named for the HD Ram. Weakness: listing data only.

What to check before you buy

Mistakes that cost you

• Paying for the words. "Heavy duty" with no number is an adjective.
• Comparing numbers without the basis. Per side, per board and total are different figures.
• Trusting a title number. A figure in a seller's title with no document behind it is the seller's word.
• Assuming HD truck means HD step. A title that lists a 3500 tells you where it is listed, and nothing about how it is built.
• Buying a step for a slider's job. If you hit rocks, read the slider comparison first.

Bottom line

Nothing on this page is certified heavy duty, because nobody we read certifies it. Pick the part whose paperwork you can see: on an F-150 or Super Duty SuperCrew, the Tyger Riser 6-inch^*, and on 2020-up GM HD crew cabs, the Tyger Rider^*. If a rated load is your deciding factor, ask the maker in writing before you order. The truck picker and all trucks take you to the rest, and how we verify fitment explains our rules. Check your exact year and cab on the listing before you buy.