Mikuni MK-BSR42-31 Carburetor Rebuild Kit for
2012-2013 Yamaha YFZ 450 ATV applications where
the OEM BSR42 Mikuni CV Carburetor is used.
This kit includes critical Genuine Mikuni parts including the needle valve, fuel screw assembly, slide diaphragm and other related items to return your carb to its original condition.
Due to jet variations, Kits DO NOT include any
Main Jets, Pilot Jets or Throttle Slide Needles