Reply To: GT 250 valve shim size? Forums 🚥 PiT STOP 🔧 Hyosung Technical Help GT 250 valve shim size? Reply To: GT 250 valve shim size? Sep 10, 2022 at 10:34 PM #8564 JimMember Topics: 11Replies: 131 JMP shims look rare over here. Besides OEM, PRO X seems to be slightly preferred over the Hot Cams. Still gathering info. Thanks Marcel.
