Part No. MK-563 (oro2u.com) Mikuni TM33 SS pumper carburetor Pilot jets The VM28.486 series of jets is what will work in the stock dirt carburetor (Mikuni TM33 SS). The N224.103 series of jets may look like they will work, but they will not fit. Fits TMX36, BDST, CARBURETORS YZ, RAPTOR, CR, DR350
