Marin Alpine Trail Carbon 1The all new Marin Alpine Trail series is the boldest and most capable line of Marin 's enduro bikes ever, built upon our most advanced, most adjustable frames to date. Full carbon frame feature 29 wheels, 160mm front and 150mm rear travel, and the utmost in adjustability. Riders can alter the head tube angle and bottom bracket chainstay length. Bear Box downtube storage includes a zippered nylon bag to house trail essentials, and a 34. 9mm seatpost