These TM Racing system kits are machined for each application which generally takes 3-4 business days to process. The system kit will include a replacement factory TM Racing Stator, TM Racing( flywheel) and TM Racing Ignition Coil. All parts in the kit need to be installed at the same time. All parts look different than stock but are bolt-on. The new Flywheel Rotor does use a keyway. Be sure to leave your specific year make and model in the order notes.