Biker's Choice Compensator Eliminator For Harley Big Twin These direct drive motor sprockets from Biker's Choice eliminate the diaphragm spring style compensator assembly which prevents noise and slippage in high performance builds. They will also eliminate issues of failure prone stock and or Screamin' Eagle compensating sprockets and assist starting. The sprockets feature a noticeably lighter than stock compensator assembly, reducing the rotating mass. Features: Produced out of heat treated high strength tool steel Black oxide coating Includes detailed instructions Requires an ECM re-flash for the 6th gear light and cruise control to properly function