Indeed very few motorcycles can boast 62 years of uninterrupted production, the Harley-Davidson Sportster (XL) is one of them. Harley-Davidson has started manufacturing the Sportster since 1957 and continues to these days without interruption: an icon.
Another record of this bike is that it is equipped with the smaller air-cooled two-cylinder, the basic model has a displacement of “only” 883cc.
I guess that’s why many Sportster owners ask me: is it worth tuning?
The answer is yes and the numbers contained in the following dyno graph give the reasons.
Red lines: before Tuning, Blue lines: after Tuning
1957 Sportster XL
