You have likely heard of variable valve timing by one of the names manufacturers have for the system, such as VVT-i or VTEC.

The 2026 Beta RR X-Pro 4-Stroke lineup has a hand-winning ace up its sleeve for California riders—they will be eligible for a ...

Join me in my latest adventure as I attempt once more to fire up the innovative rotary valve engine! If you're just tuning in, catch up with my previous efforts at this link: <a href=" Your amazing ...