- 39mm Fork Tube Diameter
- 25” Fork Tube Length
- Based on stock 25" length on '04-up Sportsters
- Fits any model Harley with 39mm Forks (such as 1987-up Sportster, and certain Dynas).
- This listing is for fork tubes only, internals are not included.
These fork tubes fit any model Harley with a 39mm front end on it. You can buy any length 39mm fork tubes you would like, as they mount up the same on mostly all models (see NOTE below for outliers).
Harley Sportsters 1986 through 2003 have fork tubes that are 23-1/4”, 23-3/8”, or 24-1/4” long, depending on what model they are on. This is a variation of 1”, maximum. Sportsters 2004 & later typically have stock fork tubes that are 25” (which is what our +2", +4" etc measurements are based off of). Different year ranges and models had slightly different fork tube lengths, so the ‘stock length’ varies, but not by much. The
exact length you will gain by using overlength fork tubes may vary depending on what your original fork tube length was.
View a chart of fork tube length by year ranges here to find out what length fork tubes your stock bike has.
These fork tubes are 39mm in diameter and measure 27” long, which is +2” over versus the stock fork tube length of 25" as found on most '04-up Sportsters. Hard Chrome plated finish.
In addition to fitting 1987-up Harley Sportsters, these tubes can also work with 1987-1994 FXLR, 1988-1994 FXR / FXRS, and 1991-2005 FXD Dyna.
Don't forget to pick up a
fork seal kit so you have everything you need to install your new fork tubes!
NOTE: These will not work for front forks with cartridges or Sport models with adjusters on the top and bottom, such as: 1996-2003 XL1200S and 1999-2005 FXDX.
For all the details on fork tube diameter, length, and what-fits-what, check out our
How To Identify Harley-Davidson Forks article. It includes reference photos, tables of OEM numbers, fork lengths and diameters, and all kinds of other tidbits to whet your whistle!
