No, rev matching is not bad for a motorcycle. In fact, it can be a beneficial technique that improves the smoothness and control of your ride, especially during downshifts.
Rev matching, also known as throttle blipping, involves matching the engine speed (revs) to the speed of the lower gear when downshifting. It is typically done by quickly and momentarily blipping the throttle while pulling in the clutch lever to smoothly match the engine speed to the lower gear's speed before releasing the clutch.
Here are some reasons why rev matching can be beneficial:
Smoother downshifts: Rev matching helps to synchronize the engine speed with the lower gear's speed, reducing the jolt or jerk that can occur when shifting down. This results in smoother and more seamless gear changes, making the ride more comfortable and reducing stress on the drivetrain.
Preserving traction and stability: When downshifting without rev matching, abruptly releasing the clutch can cause the rear wheel to lock momentarily or the bike to jerk, which can impact traction and stability. Rev matching helps to maintain a smoother power transfer, reducing the risk of instability or loss of traction during downshifts.
Extended clutch life: By rev matching, you reduce the load on the clutch when engaging a lower gear. This can contribute to reducing clutch wear and potentially extend its lifespan.
Easier re-engagement of the clutch: Rev matching ensures that the engine speed is closer to the desired speed when the clutch is re-engaged. This makes it easier for the clutch to smoothly re-engage with less stress on the drivetrain components.
If done incorrectly or excessively, it can cause excessive wear on the clutch or other drivetrain components. It's advisable to learn and practice rev matching techniques under controlled conditions and gradually incorporate them into your riding style.
Ultimately, rev matching is a technique that can enhance your riding experience and improve the overall smoothness and control of your motorcycle.