NOTE!! THE 13TOOTH SPROCKET (BECAUSE_OF_IT'S_SMALL_OD) HAS A SMALLER BOLT PATTERN FOR THE LOCKING PLATE,, SO YOU MUST TAKE A DREMMEL TO THE ONE YOU HAVE NOW TO MAKE IT WORK.. (WE_DON'T_HAVE_ANYTHING_THAT_WORKS) THE 14 TO 17 TOOTH TAKE THE ONE YOU HAVE ON YOUR SPROCKET NOW OR WE SELL THE 151J PLATES THAT WILL WORK TOO. THESE FIT LOTS OF BIKES AND CLONE ENGINES JUST MEASURE YOUR OUTPUT/COUNTERSHAFT .. THE OUTSIDE DIAMETER SHOULD BE 20MM AND THE INSIDE SPLINES SHOULD BE 18MM OR 16MM 14_TOOTH_208M 15_TOOTH_218L 16_TOOTH_218M 17_TOOTH_218P CTN479/484PICK_TOOTH_COUNT: 13TOOTH_307A14TOOTH_CTN481_208M15TOOTH_CTN482_218L16TOOTH_CTN483_218M17TOOTH_CTN484_218P @ *PLATE FIXING FRONT SPROCKET CT110_1980 OTHERS 7/19A (303F) 303F @ *BOLT_FRONT SPROCKET LOCKING_PLATE (6x8 MM) FITS ALL BUT (Z50 81 AND OLDER) 92101-06008-0A 1/22A (53D)THIS BOLT WORKS WITH OUR #24K AND #79K LOCKING PLATES. SOLD EACH, OEM HONDA BOLTS YOU NEED TWO PER BIKE. WILL ALSO FIT ATC AND TRX 70'S (53D)