This is a new steel drive shaft for #1274 Harley Big Twin 1936-1969 magnetos that can be used to convert your existing 1/4” drive magneto to accept the newer 3/8” drive, which is what all of our neodymium magnets feature for increased strength and shear resistance.

Note: For shaft length please select Standard Harley Base for original Harley magnetos, or Joe Hunt Base for Joe Hunt Magnetos that utilize the #1007 base from 2006 onwards.