Kelleners BMW 1 Series M Coupe KS1-S – Click above for high-res image gallery

The BMW 1 Series M Coupe has quickly become an enthusiast's favorite, but for every performance-oriented Bimmer out there, there are another half-dozen tuners rearing for their chance to turn up the wick.

The latest is Kelleners Sport, which has taken the 1M Coupe and its twin-turbo six from 332 horsepower and 332 lb-ft of torque up to 404 and 405, respectively, in its creation, dubbed KS1-S. That's principally thanks to a new exhaust system and – we suspect – a little recalibration of the engine mapping.

The KS1-S also packs a new aero kit, 20-inch alloys and an independently adjustable coil-over suspension. The skunk motif carries over from the body to the cabin, where Kelleners has applied two-tone perforated leather and Alcantara to just about every surface. See for yourself in the high-res image gallery and the press release after the jump.
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Compact high-performance sports car: The Kelleners Sport KS1-S based on the BMW 1-Series M Coupé

- Kelleners Sport the first tuner to offer a complete conversion
- Output up to 410 hp
- Adjustable coilover kit tuned by Ralf Kelleners ensures optimum handling - on road and track
- Supplementary front spoiler lip for optimum down force at high speeds - threepiece grill insert reinforces visual impact
- 20-inch light-alloy 'Berlin' or 'Hamburg' wheels
- Exclusive interior concept with luxurious leather trim

The M in the name promises much. Kelleners Sport guarantees even more. Now, with the BMW 1-Series M Coupé (Type E82), the German BMW specialists have taken the combination of high-performance engine and lightweight body to its logical automotive conclusion - power up to 410 hp, unique handling characteristics, improved aerodynamics and the high-grade interior are the distinguishing features of the KS1-S.

The high-revving inline six-cylinder engine with twin-turbochargers boosts the output of the KS Power SW 35M by a good 20 percent. Instead of the standard 340 hp (250 kW), the KS1-S produces max. 410 hp (301 kW) while max torque jumps from 450 to 550 Nm. The result is a decline in weight to power ratio from 4.4 to 3.8 kg per hp. And emphasising all this power are special Kelleners Sport rear silencers. With four 83 mm tail pipes, the stainless-steel system is optimised for unrestricted flow and distinguishes the car from the series model with a significantly more exciting exhaust sound.

The aerodynamic components of Kelleners Sport are designed to minimise wind resistance and ensure maximum down-force at high speeds. The MS front spoiler lip and the three-part MS grill insert made of electro polished stainless steel underscore the aerodynamic qualities of the car and create a supplementary visual impact. Naturally, this does not affect the BMW air curtains, which improve the aerodynamics by channelling the air stream around the front wheels. Visually, the improved agility is accentuated by decorative strips on the bonnet, roof and side sills.

The adjustable coil-over suspension system has been developed on the basis of racing experience and tuned in cooperation with eponym and racing driver Ralf Kelleners. Thus, Kelleners Sport gives the ambitious driver a wide range of options for setting the car up to suit his or her individual needs.

Besides the continuously variable height adjustment, the suspension can also be adjusted independently in terms of both rebound and compression. In other words, the KS1-S can be set-up exactly to take account of the track, the tyres and the driver's preferences.

The Kelleners Sport light-alloy wheels also contribute to the sporting characteristics and image. The extremely light, one-piece wheels reduce the unsprung weight and thus ensure dynamic handling. At the front, the 9x20-inch wheels are fitted with 245/30 high-performance tyres while the rear axle comes with 10x20-inch wheels and 265/30 tyres. With their 15 elegant spokes, the 'Hamburg' wheels are available in the following finishes: polished graphite-silver, polished platinum-silver and matt black. The 'Berlin' wheel with slender double spokes is available in platinum silver polished, matt black polished and matt black.

The work of the Kelleners Sport saddlery department, the high-grade interior concept gives the KS1-S the exclusive ambience of a luxury sports car. Top-quality perforated leather and velvety Alcantara in black and white fully cover the front and rear seats, the dashboard and the door panels. The white contrast stitching and the Kelleners Sport logo embroidered onto the head rests set elegant accents and underscore the car's exclusive flair. The sports steering wheel is fitted with Alcantara applications. Additionally, the gear lever and hand brake boots are made of Alcantara. Rounding off the interior upgrade are high-gloss white interior trim and familiar accessories, such as aluminium pedals and a set of four foot mats made of high-grade velour with the Kelleners Sport logo.

The customised BMW 1-Series M Coupé is unequivocal evidence of the experience and expertise offered by Kelleners Sport. All work is based on a comprehensive concept for performance and handling, as well as interior and exterior style, and transforms an exclusive car into a unique and individual automobile - the Kelleners Sport KS1-S.

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