A Talon gearbox sprocket for the BSA Bantam trials models. These are suitable for use with a 428 chain. Available with 12 or 13 teeth, please choose your preferred one in the dropdown. Please note these sprockets are much smaller than standard, and your chain may foul the standard sprocket lock nut. If this is the case, you will need to make alteration to the locknut until it clears the final drive chain.