Both packages are optional on the base truck. The SX package gets black wheels, blacked-out trim pieces, black badges, and black decals. There’s a trim-specific bed graphic too. The SX package can only be had on two- or four-wheel-drive, V-6-powered trucks. While the SX gets blacked-out trim, Chrome gets exactly what its name implies. The most obvious are 18-inch chrome wheels set off with chrome-finish door handles, exhaust tips, and tailgate emblem. The interior gets a leather-wrapped shift knob. The Chrome trim is exclusive to V-6-powered SR5 Double Cab trucks with the 5-foot bed, and in both 2WD and 4WD configurations.