Acerbis off-road skid plates provide protection for the engine cases and frame rails. Key features and benefits of Acerbis skid plates include: Simple mounting system makes installation, cleaning, and maintenance (like oil changes ) a snap. Snug fit prevents mud / dirt / rock / debris from building up between the skid plate and the motor. Less expensive than many other aluminum and carbon fiber units. Much quieter than aluminum skid plates; does not vibrate during idle or resonate after a rock ding. Does not affect frame rigidity / flex.