Click to enlarge

has 28mm or 29mm ID ,, but will go some larger or smaller

K&N FITS STOCK Z50 XR50 CRF50 CARBS 1/17P (76L) 76L$42.99
K & N OIL AND CLEANER KIT 1/16W (995050) K & N OIL AND CLEANER KIT 1/16W (995050) THIS CLEANER IS GREAT STUFF, THEN AFTER IT DRYS ADD THE OIL DOWN EACH RIPPLE OF THE WIRE AS INSTRUCTED.

K & N OIL AND CLEANER KIT 1/16W (995050) 995050$15.89