: Modern Harleys often come with a "Rain Mode" that adjusts power delivery to help maintain traction.
"Harley Rain" can refer to a few different things, most notably a person's name or the experience and gear associated with riding a motorcycle in wet weather. Riding a Harley in the Rain
For many riders, catching some rain is just part of the adventure. While it presents safety hazards like reduced traction and visibility, many enthusiasts follow a "rain or shine" philosophy.
The name "Harley Rain" (or variations like Raine) appears in several public records and social media contexts: What rain gear do you recommend besides HD Gear? - Facebook
: These are covers for air filters (like the "Screamin' Eagle") designed to prevent the engine from sucking up water and sputtering during heavy downpours.