Abstract: A drive mechanism to enable a bicycle to coast forward or backward iincludes a ratchet ring that is directly coupled to a sprocket of the bicycle. A pawl housing is directly coupled to a crank axle of the bicycle. The housing includes a plurality of pawls that are distributed about a perimeter of the housing. The pawls are extendible outward from the perimeter of the housing to engage the ratchet ring to rotate the sprocket when the crank axle is rotated by forward pedaling. A clutch disk includes a plurality of radial projections that are each configured to extend outward a pawl of the plurality of pawls when that pawl is rotated to that radial projection by forward rotation of the crank axle. The clutch disk is coupled to a friction element that resists rotation of the clutch disk relative to a chassis of the bicycle.