Sierra says: The all-mountain freestyle shredder. The M9 is the lil bro to the M11 with the I-Flex strap making the only difference between the two. The M9 is designed with the I-Flex strap to deliver a smooth flexible ride for the freestyle guy. Since the strap flexes in the center it allows you to pre-load or have some le-way when performing any stunts. The fiber-reinforced rocker baseplate make...