Help with speedo drive

[Jgb19830]

I'm planning to swap my re to supermoto soon but will I need to change the speedo drive to account for the smaller front wheel?

[claws]

@Jgb19830 i think you should get one from a dt125x i have a supermoto converted dt125re and the speedo shows around 15-20kmh over what you are going. though my speedo doesnt work anymore since the wire broke and i cant be arsed to buy a new wire