Throughout the history of Harley-Davidson, there have been a great many engines offered across various models. And for decades, these engines have presented buyers with a rather unique issue. In terms ...

TJ started writing for TopSpeed in 2015, but has been writing on motorcycle and automotive topics since 2009 for outlets such as eHow, eHowNow, and MotorTrend subsidiaries. He is certified to work on ...

Crate engines are a lifeline for street-performance two-wheelers and four-wheelers. When Harley-Davidson introduced the Screamin' Eagle 135ci Stage IV Performance Crate Engine in 2023, it wasn't just ...

Harley has packed the Road Glide RR with high-performance Screamin’ Eagle Stage IV components. These include a high-capacity inner camshaft bearing, upgraded valve lifters, high-performance valve ...

Most Harley-Davidson new launches are loaded with infinite amounts of chrome, a raked-out front wheel, ape hangers, tassels, and shining lights. Not this one. Coming at US$110,000, Harley-Davidson's ...

There's a bearing type for every reason and every possible application. MAHLE Clevite has got you covered, from Mom's grocery-getter to 11,000hp blown Nitro motors. Here's the scoop on choosing the ...