Gearbox Compatibility

Hi everyone.

I’d like to find out if the 2005 Hyosung GT250 Comet shares a gearbox with any other brands and models of bike out there. My second gear exploded and also cracked the casing so I’m trying to fix it but battling to find parts in South Africa 🤦🏼‍♂️ any advice would be greatly appreciated.

Chezney