Drilled clutch basket with drilled/square cut drive gear. The smaller gear is the kick start gear. This was a worthless last minute addition to the design. There is no return spring for the kick starter. When you try to start the bike you must push the kick start lever forward. This will engage the gear into the clutch. When it catches into several cogs on the underside of the clutch you can give it a kick. DO NOT push the starter lever forward while the engine is running or bad sounds will occur. There is no stop on the kick start arm either, it slams into the case when it reaches it's limit. The Catalina racer has a strange arm that bolts to the rear of the bike's frame and comes forward to the engine. The kick start lever hits this first before the engine case is struck. This bike had this outside safety arm removed and of course the L.H. crankcase was broken where the kickstarter internal arm struck!