Engineers also needed the bike to slim down, too. In addition to the aluminum heads, Harley engineers introduced aluminum spoked wheel rims, a 2.5-gallon fiberglass fuel tank, and a light fiberglass ...

Lighting all-round is LED, from the single assembly headlight, rear combination lights, and indicators. The DR-Z4S is ...

We acknowledge the fact that we are ignoring a multitude of popular non-Harley V-twin motorcycles. V-twin motorcycle engines ...