THIS NEW OEM HONDA SWITCH COMES WITH TWO NEW KEYS AND WILL FIT ALL YEARS OF CT110'S. 56H @ *KEY_BLANK RIGHT_CUTOUT FITS_SOME CT110'S_OTHERS MANY_ATC'S 35121-086-811 35121-GW0-731 1/20A (R2159)THIS FITS MANY MANY BIKES, JUST MAKE SURE YOU NEED THE RIGHT SIDE CUTOUT (COMPARE_YOURS_TO_THE_PICTURE) HONDA SUPERSEDED THIS FROM AN ALL METAL KEY WITH NO EXTRA GROOVES TO THIS ONE THE EXTRA GROOVE WILL NOT MAKE ANY DIFFERENCE FOR THE OLD KEYS THAT DIDN'T HAVE THE EXTRA ONE OLD NUMBER 35121-086-811 NEW 35121-GW0-731 R2159 @ *KEY_BLANK LEFT_CUTOUT SOME CT110_OTHERS MANY_ATC'S 35122-GZ0-003 1/22A (300H)THIS FITS MANY MANY BIKES, JUST MAKE SURE YOU NEED THE LEFT SIDE CUTOUT (COMPARE_YOURS_TO_THE_PICTURE) 300H @ *KEY_BLANK LEFT_CUTOUT SOME CT110_OTHERS MANY_ATC'S 35122-086-811 OR 35122-GW0-731 1/22M (307H)THIS FITS MANY MANY BIKES, JUST MAKE SURE YOU NEED THE LEFT SIDE CUTOUT (COMPARE_YOURS_TO_THE_PICTURE) MAY HAVE AN EXTRA GROOVE BUT IT STILL WORKS ON THE FIRST OEM NUMBER LISTED 307H