Reply To: Rear sprocket Forums 🚥 PiT STOP 🔧 Hyosung Technical Help Rear sprocket Reply To: Rear sprocket Aug 10, 2021 at 12:31 AM #6095 ♠️ MARCELAdmin Topics: 46Replies: 2,813🌍 Country: UK⚡ Bike Model: GT Front Sprocket Nut = M27 SOCKET Rear Sprocket Bolts = M8 x 40mm (ish) and Nylock M8 Nuts. Use stainless.