Rocker Panel Kit
For the GMC Sierra HD Sierra 2500 HD / 3500 HD (2015–2019, K2XX), 2500HD Denali / 3500HD Denali / 3500HD SLE / 3500HD SLT / 3500HD Sierra.
Kits shown for North American-specification cars (from your country: United States).
Your preview
Clear gloss on your selected panels
Clear gloss. Diagram shows coverage and finish; actual cut lines depend on your vehicle.
What is covered
- Rocker panels
≈$342USD
Both rocker panels (sills) below the doors, the area most exposed to gravel thrown by the front wheels.
Pattern checked for North American cars.
Options

What you get
- Pre-cut pieces for every panel listed above, numbered to the installation map
- Squeegee, microfibre cloth and installation solution to mix with water (spray bottle not included)
- Rolled in a rigid tube, cut to order
Not covered by this kit (check before you order):
- Dual-rear-wheel bed fenders and extended dually sill coverage
- 4500 HD / 5500 HD chassis cabs
- 2020+ Sierra HD (new generation)
- Free shipping in Canada · tracked shipping worldwide
- Cut to order, ships in 2–4 business days
Pre-cut for you to apply at home. See the DIY guide.
First time, or not sure about the colour? Get the sample & practice pack.
- Fits
- All trims