Final answer:
If a motorcycle is going too fast for the selected gear while downshifting, it can put stress on the engine and potentially cause damage or loss of control. To prevent this, the rider should match the gear to the appropriate speed and use the brakes to slow down before downshifting.
Step-by-step explanation:
When downshifting on a motorcycle, the rider changes to a lower gear in order to slow down the motorcycle.
However, if the motorcycle is going too fast for the selected gear, it can put stress on the engine and cause it to overrev. This can lead to engine damage or loss of control.
To prevent this, the rider should always match the gear to the appropriate speed. If the motorcycle is going too fast for the selected gear, the rider should use the brakes to slow down before downshifting.
For example, if the motorcycle is in 5th gear and the rider needs to slow down from a high speed, they should apply the brakes to reduce the speed, then downshift to 4th or 3rd gear once the speed is appropriate for those gears.