I have the Black Ice. Caliber is 90" long---Black Ice is 96" long. The extra 6" takes a bit more of the angle out.
Black Ice is also cheaper. Both ramps are great quality. Whichever one you go with do not order the extension. You do not need it unless your truck is lifted or higher for some reason.
the longer the ramp the better/safer, takes a lot of the steepness out of things for you, all the more so if you own a taller truck)AKA lifts, bigger tires )
