Mercedes-Benz will unveil another customer sport racing car, the CLA 45 AMG Racing Series, at the 2013 Frankfurt motor show this month. AFFALTERBACH, Germany - The CLA 45 AMG Racing Series concept car will be celebrating its world debut at the 2013 Frankfurt motor show as a preview of another customer sport racing car from Mercedes-AMG.Its sister, the A 45 AMG hatchback, arrived in South Africa a couple of weeks ago.CEO of Mercedes-AMG Ola Kallenius said: "The CLA 45 AMG Racing Series demonstrates our desire to further increase our commitment to customer motorsport. We are also seeking to offer interested customer teams a competitive, near-standard racing car with an excellent level of safety in the popular four-cylinder segment."The tremendous success of the SLS AMG GT3, which is now being raced by customer teams across five different continents, makes us highly confident." So what makes this car so special? Mercedes said it's set for the crowd-pulling race series featuring two-litre turbocharged cars and may be deployed internationally if demand is high enough. Technical specs will vary according to the race rules and series. The engine output and power transmission are variable, with permanent all-wheel drive or purely front-wheel drive as in the standard CLA.RACE CAR TECHAccording to the automaker, the special racing suspension has a wider track at the front and rear and allows several adjustments for a custom setup. The suspension level, spring rate and damper characteristics are adjustable, as are the track and camber at the front and rear axles. The braking system with ventilated discs all-round is equipped with an anti-lock system.The car features carbon-fibre (CFRP) extras which enhances its design such as a new front and rear apron, flared wings, side sill panels and wide treadless racing tyres. There's also a carbon-fibre rear wing and large apertures for engine and brake cooling. Nifty additions such as the front apron's splitter ensures additional downforce, the rear diffuser with three fins and the adjustable rear aerofoil all come in handy on the racetrack. The air intake in the sill panels ahead of the rear wheels ensures effective cooling of the rear brakes.Inside the car there's a racing steering-wheel with shift paddles, a roll-over cage made of high-strength steel, a carbon-fibre Recaro P 1300 GT racing bucket seat and an integrated fire extinguishing system. Stay with Wheels24 for the 2013 Frankfurt Motor Show.