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// Workers AI · dad joke modeWhy was the Harley-Davidson Ironhead engine sad? It had an iron-clad heart.

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From Wikipedia, the free encyclopedia

Harley-Davidson Ironhead Sportster engine at the Harley-Davidson Museum
1980 HD XLR Sportster with Ironhead Engine
1957 Harley-Davidson XL Sportster with Ironhead Engine
ManufacturerHarley-Davidson
Also calledXL
Production1957 to 1985
PredecessorHarley-Davidson KHK

The ironhead was a Harley-Davidson motorcycle engine, so named because of the composition of the cylinder heads (Iron instead of Aluminium).[1] The engine is a two-cylinder, two valves per cylinder, pushrod V-twin. It was produced from 1957 until 1985 [2] and was replaced by the Evolution engine in 1986.[3]

This name was applied to the Harley-Davidson Sportster motorcycles that used this engine.

See also

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References

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  1. ↑ Owen, Justin (18 September 2024). "Every Harley-Davidson Engine Ever Built". SlashGear. Retrieved 11 April 2026.
  2. ↑ "Ironhead Archive". Thunderbike. Retrieved 11 April 2026.
  3. ↑ Patrascu, Daniel (2 September 2023). "Harley-Davidson Engines: Full Timeline and History (1903-2024)". autoevolution. Retrieved 11 April 2026.
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