10 Harley Davidson Engines That Last Forever Plus the Rev Max Engine

The Harley-Davidson Revolution Max engine is used in the Pan America, Sportster S, and Nightster models.

The Rev Max™ engine is a 60-degree V-Twin, different from the usual 45-degree we see on the Milwaukee-Eight®. It also utilises a dual overhead cam design with one cam specifically for the intake and one cam specifically for the exhaust, meaning the rider can benefit from independent variable valve timing.

The Revolution Max has a displacement and a top speed of 137 MPH. With similar specs to the 2024 Harley-Davidson Sportster® S, this bike has an edge with a powerful 150 horsepower and 95 lb. -ft. of torque with the Revolution® Max 1250 engine.