Beware of the langster

There are three 06 models, stock, comp, and the s-works frameset. (check out specialized.com ) The comp is a decent bike, but for the price, buy a bianchi pista concept instead, the componentry package is much better.

The s-works is a true track frameset, made from super light aluminium, wouldn't recomend it for street riding.

The stock langster is not a great bike. It may be suitable for running as a singlespeed with both a front and rear brake, but needs to be upgraded if its going to be used as a fixed gear. The main problem is the wheelset, the threading will not withstand brakeless riding (or tightening a lockring to tight). Other issues include a poor quality bottom bracket and headset.

I own an 04 langster and ride it fixed and brakeless. But, I've replaced every single component except the crankset. (the crankarm on the driveside snapped off of the spider once but specialized replaced it for free, but I will soon replace them, and get a new frame)

The langster has a poor reputation around this forum, There are plenty of single speed road bikes with a lot more class, take some time to seek them out, start with http://kogswell.com/ and http://www.surlybikes.com/