JET MIKUNI 12.5 N224.103 PILOT

Part No. MK-551 (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