The first variable timing systems offered on internal combustion engines, powervalves were designed to allow your two-stroke to be both tractable and exciting. Here are the essentials on what they consist of, the different systems and how they function

Because motorcycle engineering is beautiful

Heavily revised mini-adventure bike shows promise from rescued KTM

2005-2014 BMW S1000RR

1994-2004 DUCATI 916

…KTM’s long-awaited supersport weapon, the 990 RC R