2013 Harley-Davidson V-Rod Muscle, The fast, powerful and aggressive V-Rod Muscle motorcycle is built for riders who want a little extra beef with their horsepower. Big meaty air scoops, muscle-bound mufflers, 240 mm rear tire, fastback-style tail section and massive airbox compliment the power of the 1250 cc liquid-cooled Revolution engine. Ride the V-Rod Muscle and experience the true definition of power cruiser. This brawny beast is for performance enthusiasts who crave power and control, with a dash of intimidation, in a package that is all Harley-Davidson.