UPDATE The bar end adapters are now available from Trek
UPDATE 5/26/2011: I have heard unofficially from a Trek sales rep that there will be bar ends released that will fit on these handlebars. Unfortunately he had no ETA on when they will be released.
One of the issues i knew i might run into when i bought my Trek 7.5 FX were the Bontrager Satellite Plus IsoZone Handlebars. I found these handlebars very comfortable, combined with the carbon fork on this bike they produced virtually no impact when navigating potholes and other road anomalies. Unfortunately, this design while very comfortable, does not allow for adding bar ends for multiple had positions. Casual bikers who are not doing long distance will find the IsoZone handlebars more than adequate and possibly superior for their needs. I do a lot of distance riding and after a while the lack of multiple hand positions led to much discomfort. I went to my local bike shop where i purchased the bike and had the handlebars replaced with
For my needs i like this setup much better. The bar ends allow for multiple hand positions on long rides and provide a nice hand position when climbing hills aggressively. I find the Ergon grips as comfortable as the stock grips. The carbon fork seems to do most of the work when it comes to absorbing impact and trail vibration and i noticed little difference in that respect from the stock Bontrager handlebars.
Here are some photos of the new and old handlebar setup.
New Handlebars/Grips/Bar Ends
Old Bontrager Satellite Plus IsoZone Handlebars