Harley JD Seat Post Assembly.
Fits 1912 - 1924 Harley J, JD, F Models. Singles and Twins.
This is a Complete Assembly.
Perfect Replica. Made in the USA.
**These will fit 25' - 28' with modification. It sounds like the frame on the 1925-1928's has a smaller ID.
Made in the USA with USA Steel by Competition Distributing.