The Ironhead Harley-Davidson engine was built between 1957 and 1985, and thus provided almost 3 decades of propulsion in the Sportster models. It is the successor of the K engines (from ’52), which still had to make do with 750 ccm and was later replaced by the Evolution (XL) engine. This gallery contains all Thunderbike conversions with Ironhead engines.
Iron DevilChopper, Ironhead
Thunderbike has rebuilt a Harley Davidson Ironhead for film and photo producer ben ott.
PainttlessCafe Racer, Showbike, Ironhead
We have built countless bikes - but this is by far the most expensive and uncompromising ThunderBIKE. This [...]