Part Number: 17-0191 Application: 1936-1940 EL1937-1948 UL1941-1984 FL1980-1985 FX1984-1985 FXST Details:V-Twin transmission 1st gear set is a 2.60:1 ratio gear set with 16 and 20 tooth gears. .UOM: EA Country of Origin: TAIWAN