Reply To: Rattling noise on gearbox – GV125S-EFI Bobber Sep 22, 2025 at 6:07 PM #20853 ♠️ M77👑 Admin Topics: 40Replies: 3,033Country: UKBike Model: GT Welcome to the forum! Nice to see the Hyosung is getting popular in the Sunny South! I would say , open the clutch cover and see if there is anything broken ?