11-tooth sprocket DIY and save money Commonly replaced Doodle Bug parts Simple installation The clutch assembly for the Baja Doodle Bug (DB30) mini bike includes an 11-tooth front sprocket Perhaps it is a reflection on the Doodle Bug’s popularity, but this is one of the most commonly replaced Doodle Bug parts The clutch assembly for the Baja Doodle Bug (DB30) mini bike includes an 11-tooth front sprocket. Perhaps it is a reflection on the Doodle Bug’s popularity, but this is one of the most commonly replaced Doodle Bug parts. Mini bike clutches are not very complex systems. The Doodle Bug uses this very simple but durable mini bike centrifugal clutch to transfer power from the engine to the belt or drive chain. Replacement mini bike clutch parts and assemblies for mini bike engines are therefore neither complicated nor expensive. 5/8 inch shaft #35 chain, 11-tooth sprocket