The trek powerfly 9 lt plus electric bike 2017 makes mountain biking even more fun building upon trek39s proven off road legacy to create a supremely capable bike that allows you to go further and have more fun the lt model brings even more capability to the table with 150mm of travel and reaktiv rear shock powered by the bosch performance cx pedal assist system this rugged system delivers a maximum torque of up to 75 newtom metres sustained power into the high cadence range f