The only thing I know about Time Trials bikes is that they usually look completely insane with a commensurate cost.

I'm looking at a set of brake calipers that are Marketed as "Time Trial/Triathlon" brakes..i'd like to use them on my go-for-a-fast-ride bike
http://www.tektro.com/02products/12qb.php
The example there isn't C&V but this applies to C&V parts just as equally....what makes these parts "TT/Triathlon" ?

my main concern is whether there is a focus on weight savings at the cost of reliability.