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? Oct 24, 2022 at 8:54 AM #8921 Hyo71Member Topics: 4Replies: 18 I was going to ask the same question as I need to check mine. I was hoping they were 10mm as I already have a good range of those.
