哈利戴维森最具标志性，最成功的摩托车今年摩托车最多50岁 - 但你永远不会在街上看到一个。

We’re talking about the XR750, a machine that has been winning races ever since its introduction in 1970. It was brought out in response to AMA racing rulebook changes in 1969, and while some versions were used in roadracing in earlier years, this machine is best-known for its flat track heroics. According to Harley-Davidson, the XR750 won 28 out of the AMA’s 37 Grand National Championships. between 1972 and 2008. It also won more races than any other bike in the AMA’s racing history, leading some to call it the most successful race bike in history.

现在是公平的，多年来，XR肯定得到了AMA规则本的一些帮助，并对它做得很好的自行车 - 例如，本田在20世纪80年代搬回了一个更好的跟踪经纪人，在他们赢时被嘘声。但是什么？XR仍然令人钦佩地履行其作用，而虽然它不是街道合法的，但哈利戴维森确实脱离了它的街道合法版，而且XR1000。

介绍时，XR750使用了一种基于运动员的发动机，带有铸铁头和汽缸（Boo！）和改进的采油和充电系统。后来，在'72，Moco进入全铝合金发动机，改善了性能和可靠性和减轻重量。在污垢自行车和超级运动员接管特技场景之前，它也是evel knievel的喜欢。

Harley-Davidson今年将庆祝XR750周年纪念日庆祝XR750周年纪念日。不幸的是，由于Covid-19，本赛季是一个问号，但希望有些东西会被抢救出这个混乱，我们将在本赛季看到致敬的跑步。