One-off BMW M5 CSL
Oct 28, 2009 | 09:31 PM
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One-off BMW M5 CSL 
Source BMWBlog
Celebrating 25 years of M5, BMW reveals today at Nurburgring an one-off BMW M5 CSL. Our german editor Benny is on-site and will report more news in the next few hours.
BMW’s Motorsport division buils a special lightweight version of the current E60 M5. The car is being described by M division’s head of development, Albert Biermann, as “the M5 CSL we never built”.
The almighty 5.0 liter V10 engine has been modified taking its capacity up to 5.5 liters. To accomplish this task, the highly strung, 90-degree unit has been enlarged with a longer stroke.
Official horsepower and torque numbers have yet to be disclosed, but Herr Biermann hints at around 580 horsepower and near 400 lb-ft of torque, a significant increase over the standard M5.
A carbon finer manifold increases capacity of the air box and a secondary oil cooler. The front bumper gets an additional air duct in the place where the license plate is usually situated.
No official performance numbers have been released yet, but Herr Biermann hints the M5 CSL did the Nurburgring track in under 8 minutes, 20 seconds faster than the regular M5. Unfortunately for the BMW fans, the M5 CSL remains an exercise and there are no plans for a production car.
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