Sin City is looking a lot more sinister as Chevrolet has unveiled four new Camaros at SEMA.

Sin City is looking a lot more sinister as Chevrolet has unveiled four new Camaros at SEMA.

The 2011 Synergy Series features an aerodynamic body kit, a revised grille, a body-color antenna, and optional 21-inch wheels. Inside, the cabin has two-tone leather upholstery, a Hurst shifter, red accent lighting, and 'Silver Ice' trim. It will be available in four colors (Cyber Gray, Victory Red, Summit White and Black) and sales start early next year.

If that doesn't whet your appetite, the XM/Accessory Appearance Package has Imperial Blue paint, a modified grille, a rear spoiler, and 21-inch polished wheels. Available next spring, the XM/APP Camaro will be priced at approximately $30,000.

The SSX Track Car concept explores the possibility of turning the Camaro into a closed-course racer. It features carbon fiber components (hood, fenders, door and deck lid), a unique grille, and an adjustable rear wing. Power comes from a modified 6.2-liter V8 engine which has been outfitted with a high performance camshaft, new cylinder heads, a dry-sump lubrication system, and a sport exhaust. Other goodies include a retuned suspension, race brakes, and a revised six-speed manual with a twin-disc clutch from the Corvette ZR1.

Lastly, the Red Flash concept has an aerodynamic body kit, a lowered suspension, a rear wing, and 21-inch wheels. For the interior, designers installed a racing steering wheel, LED lighting, and custom floor mats.

Check out the press release for additional information

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Chevrolet shows four Camaros at SEMA