So far haven't found anything that really mounts to the frame of my Sierra
Best I can do is the NFab RKR bars,
Order the N-Fab RKR Rock Rails. See features, images, installation, warranty, price or find a dealer.
n-fab.com
or the Stock GM ones for those on the Silverado/Sierra Platform
Enhance the rugged, off-road looks of your Silverado 3500 Crew Cab with this set of Rocker Panel Guards in black. These Genuine Chevrolet Accessory rocker guards are designed for the off-road enthusiast. Designed and engineered by Chevrolet for your vehicle to help protect the underside of your...
www.shopchevyparts.com
or the other idea was to find some full length steps and cut off the steps
FREE SHIPPING! A Stable Step for Getting In and Out of Your Truck. Accessing your truck should be a hassle-free task with the N-Fab Wheel 2 Wheel Nerf Side Step
www.americantrucks.com
Wouldn't be strong enough to jack from, but for my provide protection from a rogue rock