For a Ram 2500, wheel-to-wheel running boards must match the model year, cab and bed together. The extra step behind the cab is useful for reaching the front of the bed, but a board listed simply as “fits Ram 2500” is not enough information to order safely.
The Westin PRO TRAXX 5, part 21-534335, is one option for the specific older Crew Cab long-bed application below. It is not the correct kit for every Ram 2500. This is a catalog-based guide, not a hands-on load or durability test.
Westin PRO TRAXX 5 21-534335: Crew Cab with the 8-foot bed
Westin’s current fitment table lists this black steel wheel-to-wheel kit for 2011–2018 Ram 2500 Crew Cab trucks with an 8-foot bed. Confirm the complete vehicle application before ordering; the long-bed application excludes dually configurations and does not establish fit for Mega Cab, Regular Cab or shorter beds.
The design uses 5-inch oval bars and a third step location for reaching the bed. The mounting kit is included. This is a pair of full wheel-to-wheel bars, rather than a shorter cab-length set with a similar product name.
Why choose it: You have the documented Crew Cab long-bed configuration and want a broad oval step with a dedicated bed-access position.
Trade-off: Installation depends on the vehicle and mounting points. Review the exact instructions for drilling, brackets and exclusions instead of assuming every truck has an unconditional no-drill installation. Confirm all brackets, supports and hardware are included in the package you are buying.
Check Westin’s PRO TRAXX 5 fitment table, matching part number 21-534335 rather than selecting by product-family name alone.
Westin 21-534335 PRO TRAXX 5 Oval Wheel to Wheel Nerf Bars Black Pair | Fits 2010-2018 Ram 2500 3500 Crew Cab 8' Bed (Exc Dually)
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What if your truck has a short bed or is newer?
Do not order this long-bed kit. A 76.3-inch bed, a different cab and a newer model year require their own application check. Measure the bed and use the manufacturer’s vehicle selector with the actual model year and cab configuration. A longer bar is not automatically adaptable to a shorter wheelbase.
Check these details before checkout
- Cab: Crew Cab, Mega Cab and Regular Cab are distinct configurations.
- Bed: Use the actual specified bed length. Listings may round the same short-bed category differently; match the manufacturer’s inch measurement where available.
- Wheel configuration and modifications: Check exclusions, mounting-point condition, body modifications and clearance around existing accessories.
- Complete kit: Verify that both sides, brackets, bed-access supports and required hardware are included.
- Installation: Follow the exact instructions and torque values. Have a qualified installer inspect damaged or corroded mounting points.
Bottom line
Investigate Westin 21-534335 only for the documented older Crew Cab 8-foot-bed application. Other Ram 2500 configurations need a different verified part number. Running boards are access steps; do not treat them as jacking points or rock sliders unless the manufacturer explicitly rates them for that use.
Image note: AI-generated conceptual wheel-to-wheel step layout; exact vehicle fitment must be checked separately.
