The Grand Cherokee SRT8 doesn't need much of an introduction. Along with the likes of the Porsche Cayenne Turbo, BMW X5 M, and Mercedes-Benz ML63 AMG, it's one of the fastest SUVs you can buy. With the new WK2-based SRT8 introduced for the 2012 model year, we weren't expecting any major changes for 2013, especially considering it's been announced it's going to be a shortened model run to make room for a more comprehensively refreshed 2014 model coming next spring.

To keep things interesting before that happens, Jeep has introduced two new special edition SRT8 models. The 'Alpine' model features a bright-white paintjob, and the 'Vapor' has a brilliant black paintjob. Both feature a Black Vapor Chrome finish on split five-spoke wheels, and special gloss black accents in the form of a Jeep hood badge, Grand Cherokee door badges, front grille surrounds and inserts, and a rear light bar and step pad.

Standard for 2013 SRT8 models are leather door trim panels, instrument panel and center console, and a power liftgate.

The other go-fast bits that make the SRT8 special remain, namely the 470 hp 6.4-liter Hemi V-8 engine, and Quadra-Trac SRT performance-tuned all-wheel drive.

Source: Chrysler