Cylinder Base Nut Kit Chrome #8106-16 for Harley Davidson Sportster/XR1000 Manufacturer Part Number: 8106-16 This item fits the following applications: XLCH900 Sportster 900 1965-1971 ; XLCH1000 Sportster 1000 1958-1969 ; XLCH1000 Sportster 1000 1972-1979 ; XLCH Sportster 1958-1969 ; XLCR1000 Sportster Cafe Racer 1977-1978 ; XLH900 Sportster 900 1970-1971 ; XLH1000 Sportster 1000 1979-1985 ; XLH1000 Sportster 1000 1979-1985 ; XLH1000 Sportster Standard 1979-1985 ; XLH1000 Sportster Standard 1972-1985 ; XLH1000 Sportster Standard 1979-1985 ; XLS1000 Sportster Roadster 1979-1985 ; XLT1000 Sportster Touring 1977 ; XLX1000 Sportster 1000 1983-1985 ; XR1000 1983-1984