If there's one thing you need to know about the E90/E92 BMW M3, it would be this: no other OEM M3 came powered by a naturally aspirated V8. That fact alone makes this generation a serious standout. That engine is the S65 4.0-liter V8, which was later enlarged to 4.4-liters for the M3 GTS. With at least 414 horsepower on tap (444 hp for the GTS) and the availability of a six-speed manual, the E90 M3 has achieved greatness in the eyes of many.

As is typical with BMW, several special editions, such as the GTS, were launched throughout this generation's lifetime, one of which was the ultra-limited CRT. The M3 CRT (Carbon Racing Technology) arrived in 2011 and utilized the GTS's 4.4-liter V8. Along with some additional luxury features, the CRT featured a number of carbon fiber components, specifically the front seats, body panels, and hood.

This resulted in a 100-pound lower curb weight compared to the regular M3 sedan and, as expected, it was in hot demand. BMW figured this would be the case so it decided to limit production to a mere 67 examples. Worldwide. There was another CRT downside: it was equipped exclusively with the seven-speed dual-clutch. Owners were compensated with lightweight wheels, stainless steel brake lines, reinforced subframes, and individually adjustable dampers.

Like any M3, the M3 CRT is fast. Zero to 60 mph requires just 4.3 seconds and top speed is a claimed 180 mph. But the real attraction are the carbon fiber body parts. BMW was laying the groundwork for carbon fiber development use in mass production vehicles, specifically the i3 and i8, in the early part of the last decade and the M3 CRT was one of its first testbeds.

This makes it quite valuable even in overseas markets where it was available. But, as it turns out, someone managed to get one example shipped stateside and had it federalized, a process that cost in excess of $40,000. Up for sale on Autosport Designs is this M3 CRT in Frozen Polar Silver exterior paint with Melbourne Red accents and a black leather interior. It has just 500 miles on its odometer.

The sale includes the original books, tools, and certification records. Interested buyers are kindly asked to privately get in touch with the dealer regarding pricing but as these things typically go, don't even bother if money is an issue.