i've been wondering this for a long time. anyone care to explain

 

The racing clutches will engage harder, making for a rougher overall drive.

 

Serious clutch upgrades are like on/off switches. Makes rush hour traffic a *****. Pedal pressure is usually much higher.

As the clutch gets stronger, it's raises the potential for engine or drivetrain damage if you shift hard.

Longevity is also a concern.