With the introduction of the BMW 1-Series M Coupé (Type E82), Kelleners Sport have taken the combination of lightweight body and high-performance engine to a power of up to 410 hp, improved aerodynamics, high-grade interior and unique handling characteristics -- the distinguishing characteristics of the KS1-S.
The six-cylinder engine with twin-turbochargers enhances the output of the KS Power SW 35M by 20 percent. The KS1-S produces a maximum 410 hp (301 kW), instead of the 340 hp (250 kW) standard, while maximum torque increases from 450 to 550 Nm. The result is a drop in weight-to-power ratio to 3.8 kg per hp from 4.4.
With four 83 mm tail pipes, the stainless-steel system is optimized for unrestricted flow. This distinguishes the vehicle from the series model with a significantly more exciting exhaust sound.
The Kelleners Sport’s aerodynamic components are designed to ensure maximum down-force at high speeds and to reduce wind resistance. The three-part MS electro polished stainless steel grill insert and the MS front spoiler lip highlight the vehicle’s aerodynamic qualities, creating a supplementary visual impact.
Naturally, the BMW air curtains are not affected by this. The curtains enhance the aerodynamics by channeling the air stream around the front wheels. Visually, the improved agility is decorated with strips on the bonnet, side sills and roof. The adjustable coil-over suspension system has been developed based on racing experience.
It is also tuned with eponym and racing driver Ralf Kelleners. This means that Kelleners Sport gives drivers a massive array of options when it comes to setting the vehicle up to suit their needs. Other than the continuously variable height adjustment, the suspension is also independently adjustable in terms of both compression and rebound, which means that the KS1-S can be adjusted exactly to take account of the tires, the track and the preferences of the driver.
It recently turned out that the 1-Series M Coupé would be a one-year car, which production would end in December 2011 at the latest. In an interview with TheDetroitBureau.com, Matt Russell, the M brand manager in the US, remarked that the 1-Series M Coupé will have a limited run for many reasons.
Drawing an instant response from the its twin-turbocharged, all-aluminium, 3 liter inline-6 engine, the M Coupe sounds fantastic and still maintains its free-revving nature. Combining twin low-mass turbochargers and BMW's High Precision direct injection provides an output you would expect to feel with more cylinders and larger displacement from a naturally-aspirated engine.
The engine in the new 1-Series M Coupe can deliver 335 hp (250kW) of output at 5,900 rpm as well as 332 lb-ft (450 Nm) of nominal peak torque from 1,500 to 4,500 rpm. The M car can go from nil to 60mph in just 4.7 seconds (0-100 kmh in 4.9 seconds) and has an electronically limited top speed of 155 mph (250 km/h).