Motorcycle engines commonly have unique nicknames, like Harley’s Knucklehead. Similarly, single-cylinder bikes are often called thumpers. Here’s why.
Read the full story at Jalopnik – Obsessed with the culture of cars →

Motorcycle engines commonly have unique nicknames, like Harley’s Knucklehead. Similarly, single-cylinder bikes are often called thumpers. Here’s why.
Read the full story at Jalopnik – Obsessed with the culture of cars →