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1970 XR750

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in Arms

in Arms

Milwaukee Production Racer Rules the Roost

n the all-important AMA Grand National Championship of the 1960s and 1970s, Harley-Davidson reigned, first with the side-valve KR750 twins and then with the OHV XR750. Built in-house at the Motor Company’s race shop, these flat trackers were issued to factory riders and also available to privateers. Their double-cradle frames were built just for flat track (Mile, Half Mile and TT), and the engines were 748cc V-twins breathing through individual carburetors instead of the production V-twin’s shared single carb. The alloy-head bikes further upped the XR ante upon their introduction in 1972. So successful was the XR750 overall, that it amassed over two dozen AMA Grand National championships since its 1970 debut.

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