I have found that this is the best universal twist throttle to be used on the two-part handlebars, that have the brake lever perch Welded to the bar. The throttle cable is fairly long so you may have to shorten it. To do so you may need one of the Solder on small brass barrels listed below on this page. SIDE PULL UNIVERSAL THROTTLE ASSY 7/8" BARS 2/12A (209H) 209H$21.99 LOOKS FINE AND WILL KIND'A SNAP BACK ON THE CT90'S TOO SOLDER ON INNER THROTTLE CABLE ENDFOR SHORTINING INNER CABLE LENGTHS END$1.59 UNIVERSAL THROTTLE CABLE (TRX90) (XR/CRF50) (CB110049) THIS HAS A 10MM THREADED END TO THE THROTTLE TWIST, OR THUMB THROTTLE HOUSING, WHICH IS THE SAME AS THE TRX90 HAS , THIS CABLE IS ABOUT 3" LONGER THAN A STOCK TRX90 THROTTLE CABLE WITH A LOT LONGER INNER CABLE LENGTH,, YOU WILL NEED TO USE ONE OF OUR "END" NIPPLES AND SHORTEN THE INNER CABLE BY 1 1/4" TO USE WITH AN AFTERMARKET CARB AND THE THUMB CONTROL. UNIVERSAL THROTTLE CABLE (TRX90) (XR/CRF50) (CB110049) CB110049$11.99 85" OUTTER CABLE AND SMALL "END" TYPE CABLE* * THIS WORKS WITH OUR 209H THROTTLE ASSY 20-8626$17.99 XL_XR_CR_CT_TYPE AFTERMARKET 4_1/2"_GRIP_SET WORKS_WITH_MANY OTHER_DIRT BIKES_TOO (AFT20A) THIS GRIP SET SHOULD WORK WITH ANY 7/8" HANDLEBARS THAT HAS A PLASTIC THROTTLE TWIST PIPE. THESE GRIPS ARE AN EXACT COPY OF THE OEM HONDA GRIPS WITH THE PART NUMBERS OF 53165-430-000 AND 53166-430-000. THEY ARE COPYS OF STOCK GRIPS FROM THE FOLLOWING ALL HONDA CT110'S THE 1979 CT90 CT70 THE 1978 AND 79 CR250R THE 1979 CR125R THE 1979 XL75 & XL100 MOST ALL SMALLER XL XR AND CR'S IN 1979 XL_XR_CR_CT_TYPE AFTERMARKET 4_1/2"_GRIP_SET WORKS_WITH_MANY OTHER_DIRT BIKES_TOO (AFT20A) (AFT20A)$5.99