Travis Brown’s 2004 Marathon Trek
This bike was an experimental test mule during the 2005 race season. Travis Brown won the Marathon National Championship with this Top Fuel as well as the Iron Horse Bicycle Classic and some Mountain States Cup races. The drivetrain is an early cross-country dedicated 1 x 9 system that was optimized for chain line and Q factor (notice the Dura Ace and XTR cranks). This was part of an experiment during the 2005 season to validate the 1x drive train concept for XC racing. Travis raced every 2005 event on a 1 x 9 system and used front chainrings between 32t and 38t. The experiment showed that much smaller gearing was required than the Trek team originally thought, or their ego thought, and that the compromise in gear range was a reasonable trade off for loss in weight and improved simplicity (this was with an 11-34 cassette).