I HAVE THIS SET ON MY 54MM BORE 54MM STROKE 125CC TRX90 AND IT WAS READY TO GO WITH THE JETS THAT CAME IN THE CARB. I HAD TO SHORTEN THE INNER THROTTLE CABLE 1 1/4" AND TRIM THE CARB INSOLATOR GASKET A BIT WITH SOME SISSORS, BUT THEN IT WAS BASICLY A BOLT ON AND GO DEAL AND BEST OF ALL IT CLEARED THE TANK !!!! THE CHOKE LEVER IS IN ABOUT THE SAME PLACE AS STOCK WITH ONE CLIP @ ..22MM_CARB CUSTOM_APP'S CT110'S CT90'S/W/104CC ATC90'S/W/104CC ATC110'S ATC125M'S TRX125'S temp out of stock ATC/CT/22MM @ UNIVERSAL THROTTLE CABLE (TRX90) (XR/CRF50) 1/22C (AFTCB110049) AFT/CB110049 @ SOLDER_ON_INNER THROTTLE_CABLE 1/20W (END) (359E) END (359E) @ e ."O_RING" FOR CARB FLANGE TO MANIFOLD ALL_TRX90 CT90_78_TO_79 FITS_300008 INSOLATOR 1/22P (223H/1004E) 223H/1004E @ *CARB INSULATER FITS ALL CT110'S (ATC110'S_79/80) 48MM_C/C 22.5MM_CENTER 16211-943-306 1/22A (R2056) R2056 @ *INSULATOR GASKET WITH_22MM_ID AND_48MM_BOLT SPACING 16212-943-306 1/22A (219D) 219D @ INLINE FUEL PETCOCK OFF_ON_RES 7/19W (34i) 34i @ K&N_AIR_FILTER (CHROME_END) FITS_STOCK CT70_C70_ATC70 TRX70_ALL (CT90_THRU_77) AND_ALL_ATC 90'S 1/17P (RC_0790) (76K) 76K @ *10MM CLIP_FOR_OEM FUEL_LINE FOR_10MM_OD (SOLD_EACH) 95002-02100 1/22M (B22A) 22A