1972-1979 1000 Sportster - XLCH. 1972-1985 1000 Sportster - XLH. 1983-1985 1000 Sportster - XLX. 1977-1978 1000 Sportster Cafe Racer - XLCR. Clear timing hole plug for Harley Davidson Motorcycles. This plastic plug lets you locate the timing mark without getting an eye full of oil.