I USED A (146CC) BIG BORE MANUAL CLUTCH 120CC LIFAN, BUT YOU CAN USE ANYTHING FROM A 50CC TO THE 150CC (AUTO CLUTCH)OR (MANUAL CLUTCH) LIFAN WE SELL. OK I THINK THE 120CC TO 150CC LIFAN IS THE BEST OVERALL FIT, BUT IT IS NOT AVAILABLE IN AUTO, SO THEN THE 110CC LIFAN WILL WORK ALLMOST AS GOOD AS THE 120CC.. THE 120CC TO 150CC HAS THE TALLEST CYLINDER (WHICH IS CLOSEST TO THE STOCK 90'S) SO THE CT110 CARB BOOTS AND CT110 EXHAUSTS TAKE LITTLE OR NO MODS FOR USE ON THE CT90/110 CONVERSIONs PICK A PUMPKIN, TO CARVE UP I'M PUTTING A NEW STYLE TWIST THROTTLE ON THIS TIME SIDE PULL UNIVERSAL THROTTLE ASSY 7/8" BARS 7/18P (AFT209H) SIDE PULL UNIVERSAL THROTTLE ASSY 7/8" BARS 7/18P (AFT209H) AFT209H$21.99 LOOKS FINE AND WILL KIND'A SNAP BACK ON THE CT90'S TOO THE NEW AND THE OLD NOW WE HAVE ALL THE SEEDS OUT??? WAIT IT (REAR_MOTOR_MOUNT) DON'T LINE UP?? LETS MAKE SOME BRACES?? SEE OUR (BCI123000) AND SOME SPACERS TO GO IN BETWEEN THE BRACES SEE_OUR_(BCI123000) REAR_MOTOR_MOUNT ADAPTOR_KIT CHINA_ENGINES 50cc_to_150cc TO_CT90/CT110 (BCI123000) 215P/BCI123000$18.95 OH MY WE HAVE TO DRILL THE TOP MOUNT OUT TO 7/16" YOU WILL HAVE TO BOLT UP CT70 STYLE PEGS (OR_ADAPT_CT90) AN_ADAPTOR_PLATE SEE_PLATE_LATER ADD 3MM WORTH OF SHIMS TO THE LEFT TOP COMMON_FLAT WASHERS I PUT THE TOP MOUNT BOLT IN BACKWARDS CHAIN LOOKS IN LINE___GREAT!! SEE THE BRACES? INSTALL THE FOOTPEGS USING THE ADAPTOR PLATE BC5000 FOOTPEG_ADAPTOR CT90/CT110_HONDA TO LIFAN_ZONGSHEN ALL_CHINA_ENGINES 50CC_THRU_150CC (BC5000) BC5000$17.95 YOU CAN USE A CT70 (OR OTHER) FOOTPEG ASSY IF YOU HAVE ONE AMAZING THE CARB MANIFOLD AND AIR FILTER ARE PERFECT I_USED_OUR 212M_MANIFOLD 42C_BOOT AND_300016_CARB *PIPE, INLET 46mm_TO_HEAD & 48mm_TO_CARB 1/19M (212M) 212M$39.99 STOCK_TYPE ATC185/200 REPLACEMENT_CARB MADE_BY_SHENG_WEY HAS_48MM_SPACING (300016) 26MM STOCK_TYPE ATC185/200 REPLACEMENT_CARB MADE_BY_SHENG_WEY HAS_48MM_SPACING (300016) 26MM 300016/sheng_wey$54.95 **BOOT CARB_TO AIR_CLEANER CT110 1/16M (42C) 42C$32.95 ALL THESE WIRES AND NEW ELECTRICAL PARTS (WIRE_DIAGRAM) (COMMING_SOON) ARE NOW ALL BEHIND THE BATTERY BOX WE_WILL_HAVE WIRING_INSTRUCTIONS COMING_SOON_ALSO HOOKING UP THE ELECTRICAL (FINALLY) BATTERY IS IN !!!!!!! SEE THE MUFFLER PROBLEMS HERE CT90 with_Lifan_120cc engine_and CT70 NHRC HI PRO EXHAUST REAR MUFFLER HOOKUP_IS_CLEAN THIS_IS_OUR_NHRC CT70_EXHAUST ON A CT90 THAT HAS A CLONE ENGINE (WON'T WORK FOR STOCK ENGINE) ..NHRC ALLOY_CANISTER CHROME_HEADER UPSWEPT_PERFORMANCE EXHAUST CT70'S_&_OTHERS 1/18T (N-0130A) N-0130ARegular price: $208.88Sale price: $199.99 120cc_LIFAN_with CT110_EXHAUST PERFECT_FIT MUST_USE_2_28i'S **MUFFLER_TO_HEAD 1/2_MOON_FLANGE Z50A_68_TO_78 (sold_each) 7/17M (28I) 28i$4.89 ..MUFFLER FITS CT90K2 TO 1979 (TAKES_STOCK_SHIELDS) (REPLACES 183A0-102-650 OR 18300-102-010 ) AFT102 AFT102$134.99 **MUFFLER CT110 ALL 1/14M (NOT_FORESTRY_APPROVED) (FITS_ALL_CLONE_ENGINES) 1/19M (459MUFF) **MUFFLER CT110 ALL 1/14M (NOT_FORESTRY_APPROVED) (FITS_ALL_CLONE_ENGINES) 1/19M (459MUFF) 459MUFF$179.95 CLUTCH CABLE AND THE FRAME COVER FITS CABLE AVAILABLE SOON CLUTCH CABLE FIT RIGHT INTO REAR BRAKE CABLE SIDE,,,, YOU WOULD NEED TO BUY A BRACKET/LEVER ON NEWER CT'S AVAILABLE SOON LIFAN_CLONE 120CC_TO_150CC (REAR_TOP_ARM) TRANNY/CLUTCH CABLE_"LONG" (700059) 700059$12.99 UNIVERSAL CLUTCH LEVER/ASSY 7/8" bars 6/15J (76C) 76C$12.95 WITH DOWN TUBE COVER ON WITH CT70 FOOTPEGS THIS WORKED JUST FINE