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    2012 Trek Session 9.9 Carbon Race DH Bike
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SESSION 9.9 [TREK BICYCLES]  2012:  If you are going to pay $9000 for a bike it had better be good.  Well this is the Trek Session 9.9 - a carbon fiber downhill race rig that trumps anything else on the course.  It is a culmination of some serious technology, amazing performance, and I will have to admit - stunning good looks.  It was an exciting project and pushed the engineering and design team tot he next level.
Thirty-two pounds may sound heavy for a bike - but in this class the Session 9.9 is a featherweight.  With a little extra cash for parts one can get it down to a mere twenty-eight pounds while retaining a full eight inches of front and rear suspension - it is something that World Cup winning downhill racer Aaron Gwin can appreciate [Video]

Concept development:  A few sketches based on the original Session frame.  CAD development [below] leverages SolidWorks surfacing (yes surfacing!) to design the carbon-fiber constructed frame.
The first prototype being un-boxed in Whistler, BC.  We produced a small prototype run just for testing with pro riders during the epic Crankworx event.  After hundred of runs down the hill, we had the results:  All signs pointed toward go for production.