A spark plug is a device that delivers electric current from the ignition to the combustion chamber of an engine to ignite the compressed mixture of air and fuel. All motorcycles, including those from ...

All spark plugs may look the same to the untrained eye. Unfortunately, nothing could be further from the truth. For starters, spark plugs come in many types that are mainly differentiated by the ...

Harley-Davidson unveiled its newest V-twin engine almost a decade ago and named it the Milwaukee-Eight for having four valves per cylinder (for a total of eight). It was an all-new engine on both the ...

As arguably the most recognizable motorcycle brand in the world, Harley-Davidson is consistently at the forefront of innovative engineering. It's all about giving owners the most modern technology, ...