Harley-Davidson has remained the premier motorcycle manufacturer, combining romance with advanced technology. Recognizing that its strength is in its retro styling and reliable engines, Harley has retained the throaty, muscular power in its motorcycles with enough road vibration to keep purists happy. At the same time, Harley understands the sensibilities and comfort requirements of the modern rider. From the economical 883cc Sportster to the 1800cc Twin Cam, Harley engines address all markets.
Harley-Davidson features many different engine types.
Twin Cam 88
The 2006 FXDLI Dyna Low Rider is powered by an air-cooled Twin Cam 88 engine with an electronic sequential port fuel injection system and mated with a six-speed transmission. Displacing 1450cc with a 3.75-inch bore and 4-inch stroke, it generates 85 pound-feet of torque to earn up to 50 mpg.
The 2006 XL 1200L Sportster is equipped with an air-cooled carbureted 1200cc Evolution engine with a 3.5-inch bore and 3.81-inch stoke for a 9.7:1 compression ratio to generate 79 pound-feet of torque when coupled with a five-speed transmission.
1800cc Twin Cam 110
The fuel-injected 1800cc Twin Cam 110 is featured in the 2007 Harley FLHRSE3 Screamin’ Eagle Road King and is coupled with a six-speed Cruise Drive transmission. The engine features a 4.0-inch bore and 4.38-inch stroke generating 115 pound-feet of torque and achieving up to 53 mpg.
The 2008 Harley Sportster 883 features a fuel-injected 883cc V-Twin with self-adjusting lifters and two valves per cylinder with a 3.0-inch bore and 3.81-inch stroke to develop an 8.9:1 compression ratio. Coupled with a five-speed transmission, the Sportster 883 can provide 55 pound-feet with a maximum mpg of 60.
Twin Cam 103
The air-cooled fuel-injected Twin Cam 103 powers the 2008 Harley Police FLHTP Electra Glide with a 3.88-inch bore and 4.38-inch stroke and is matched with a six-speed Cruise Drive transmission for a maximum 46 mpg.
Twin Cam 96B
The air-cooled Twin Cam 96B drivetrain drives the 2009 Harley FLSTF Fat Boy with mid-range torque that relaxes the speed of the engine while cruising at high speeds. With a 1584cc displacement and 3.75-inch bore and 4.38-inch stroke and a matched six-speed Cruise Drive transmission, the Twin Cam 96B develops 89 pound-feet of torque and up to 54 mpg.
Revolution 60-degree V-Twin
The 2010 Night Rod Special VRSCDX is equipped with the liquid-cooled fuel-injected 1250cc Revolution 60-degree V-Twin. Its dimensions include a 4.13-inch bore and 2.84-inch stroke for a compression ratio of 11.5:1 and matched with a five-speed transmission. It generates 85 pound-feet of toque for and overall 42 mpg.