Despite declining sales and revenue in 2025, Harley-Davidson has been the dominant American motorcycle maker for most of its long and illustrious history. Harley has produced a succession of engines ...

Harley-Davison motorcycles are known for their use of big V-twin engines. The company's proprietary engine design has come a long way since the introduction of the first 49.5 cubic-inch version in ...

For close to 20 years, the Twin Cam V-twin was the heartbeat of large Harley-Davidson motorcycles. That was the case until 2017, when tightening emissions norms and a shrinking customer base that ...