via email from Will –
X-Heads. Do you feel this will prevent a cracked valve cover in a parking lot tip over? Or is it more designed to stop rash on the aluminum?
I’ve attached some images below showing how the X-Heads survived, from a driveway drop to racing on an HP2. Through several years of testing and making mistakes, we now use a SuperToughTechnology Dupont Nylon that has a no break rating and is high heat and UV stabilized. Our first products did crack but the newest generation of products do not. They are slightly ductile enabling the material to move in the process of absorbing the force of impact and prevent cracking. Behind the outer shell is a thick thermoplastic rubber liner that rests against the valve cover, contributing to the dissipation of impact force.