Performance tricks are usually just sleight-of-hand changes that dolittle to improve performance. After all, if it was that easy, everyonewould be doing it, right? But the simple fact is, valvespring ...

Introduced in 2011, the RR variant of the MV Agusta F4 1000 featured a short-stroke (Corsacorta) version of the original engine, along with a modified primary drive, cylinder head, larger titanium ...

The Wada-Cutter cardiac valve prosthesis is a hingeless, tilting disc valve. There are two struts which project into the valve orifice, acting as hinges. The titanium inner ring and radiolucent solid ...