CRF450r where buy for main drive bolt

are you talking about the bolt that goes in the end of the crank on the transmission side of the engine? if this is what your talking about its honda part number 90013-MEB-670
He is talking about converting a CRF 450 to use an electric starter instead of using the kick starter and is wanting to know if anyone sells a kit to do this.
Wendell Poggie << spelling See FLATRACK.COM send cover / crank gear hold down bolt . Burris Starter with a mod'd drive on the end << cut down 1/2 drive short extension Tig welded on .