stainless-steel exhaust valves. Note that while there is much more to valvetrain stability than simply the valves—the rocker arms, springs, pushrods, and camshaft all play critical roles—for ...

The Xtreme-S kit will come with a full cat-back stainless steel exhaust system with fully integrated valves and 4.5-inch black chrome exhaust tips. The lightweight stainless steel construction is ...

This CBX flaunts a shiny crash bar that runs underneath the stainless-steel exhaust headers just ahead ... with dual overhead cams, four valves per cylinder, and six Keihin carburetors.