VT#: 11-0665
OEM Part Number: 18070-70R
Sifton steel "R" type intake valve with 1-15/16" head. intake valves are 3.68" long. R" type valves are .080" longer than the stock valves and have a tulip shape head for maximum flow. Value face diameters are also larger which require a larger seat ground in the the head.
XL Sportster® 1970-1985