A bicycle sprocket assembly has two or more sprockets in which a chain is shifted between adjacent pairs of the sprockets. Each sprocket includes a chain engaging portion with a plurality of teeth and an attachment portion. At least one of the larger sprockets has a plurality of space maintaining projections extending axially towards an adjacent one of the sprockets. In a preferred embodiment, a predetermined axial space exists between a free end of each of the space maintaining projections and the adjacent one of the sprockets.

 
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