Recoil Starter Conversion(KYO74031-11/KE21 & KE25) made by Kyosho 74019-15 Recoil Starter Conversion(KYO74031-11/KE21&KE25) Allows for use of the pullstart (KYO74031-11) on the KE21&KE25 engines . Genuine Kyosho replacement parts make maintenance fast and easy!