Engine & Performance for 2010 Harley-Davidson FLHR Road King

Engine & Performance for the 2010 Harley-Davidson FLHR Road King

The 2010 Harley-Davidson FLHR Road King features Engine: Air-cooled, Twin Cam 96™ V-Twin, Displacement: 1584cc (96.7 cu-in); 95.3 mm x 111.1 mm, Cooling: Air-cooled, Fuel System: Electronic Sequential Port Fuel Injection (ESPFI). Owner note: Requires 20W-50 motorcycle-specific oil. Standard interval is 5,000 miles, but many owners change at 3,000 due to high operating temperatures from the catalytic converter. Known concern: Excessive Engine Heat — Common fix is a 'cat-less' head pipe or a Stage 1 tune to richen the fuel mixture.. Learn more about this ride →