Part Description
Fits 1970 thru early 1985 models (OEM 35039-70A)
Text excerpt from the catalog:
Replacement mainshafts for all versions of Big Twin transmissions. Made from aircraft alloy steel with heat treatment and finish grinding to ensure maximum durability. Note: ZPN 237150 In late 1984 FXST must use a OEM 37523-85 clutch hub key.
