A split housing for a sprocket in a conveyor system is disclosed. The sprocket includes a first, preferably upper portion that mates with a second, preferably lower portion to define a curved guide track for guiding a conveyor belt from a forward to a return run, or vice versa. The split nature of the housing allows for the removal of one portion, such as the upper portion, in a vertical direction without the need for moving the adjacent sprocket or guide rail. Hence, the other portion may remain attached to a stable structure used to support the conveyor system.