Reply To: GT 250 valve shim size? Sep 10, 2022 at 6:04 PM #8563 ♠️ M77👑 Admin Topics: 40Replies: 3,033Country: UKBike Model: GT JMP Shims are better. Supposed to be made in Japan too. Go OEM Suzuki or OEM Hyosung if you can (Hyosung uses Suzuki’s shims anyway) I have not tried HotCams or ProX to comment on their wear rate and such.
