Westin Platinum 4-Inch Oval Bent Step Bars with Mounting Kit, Part Number 21-4135

Upgrade your truck’s appearance and accessibility with Westin Platinum 4-Inch Oval Bent Step Bars, Part Number 21-4135. Designed for crew cab GM full-size trucks from 2019 through 2021, this pair of step bars provides a convenient entry point while adding a bold, finished look to the vehicle. The bent oval profile follows the truck’s body lines and offers practical stepping space for everyday use.
Constructed from durable steel, these Westin step bars feature a black powder-coated finish that helps resist corrosion, wear, and road debris while complementing a wide range of exterior styles. The Platinum series design combines a clean appearance with dependable function, making these nerf step bars well suited for daily driving, work vehicles, and truck-focused upgrades. Their oval construction provides a substantial look without sacrificing access to the cab.
Each set includes the required mounting kit for installation on compatible 2019–2021 GM full-size truck crew cab applications. Vehicle-specific fitment helps simplify installation and supports a secure, properly positioned setup. Before ordering, verify the truck’s cab configuration and model-year compatibility to ensure the Westin 21-4135 step bars match your vehicle. The package includes one left-side bar and one right-side bar.

Features:

• Vehicle Fitment: Designed for 2019–2021 GM full-size truck crew cab models

• Product Type: Platinum 4-inch oval bent step bars

• Construction: Durable steel body for dependable everyday use

• Finish: Black powder coat helps protect against corrosion and road wear

• Installation: Includes vehicle-specific mounting kit

• Quantity: Complete pair for driver and passenger sides

• Brand: Westin

• Part Number: 21-4135