SCHUBERTH SP1 Carbon Overview 

The SP1 is made to the 8859-2015 standard and costs under $2000. The SP4 is much stronger and is made to the 8860-2018 standard and costs over $5000. The SP4 is still not F1 level as it has no anti ballistic protection - that would be the top line SF3 helmet worn by Max Verstappen. But it would be the top level Schuberth helmet one would purchase for closed cockpit racing.

@@teamredgutz399 awesome. Thank you so much for such thorough answer. 🙏🏻🙏🏻

Nope

no, the eye slot is too narrow to give proper vis on a bike, and its designed for smaller, more repetitive impacts like a helmet hitting against a seat or rollcage, not a hard collision like hitting the road