Notes from the Race Department, 1967
47006-52R Frame 32 pounds (used on KR and KRTT 1952 through 1957 and all XLRTT)
47006-58R Frame 27 pounds (used on KR and KRTT 1958 through 1969)
47462-54R Rear Section, Long 13 pounds
47462-60R Rear Section, Long (light) 10 pounds