TC Bros. Fork Tube Kit For Harley-Davidson 39mm (Late FXR, Early Dyna,

A pair of Extended Fork Tubes +2" 39mm for Sportster/ Dyna Narrow Glide with a Hard Chrome Finish for a motorcycle by TC Bros.

The TC Bros. Extended Fork Tube Kit +4" 39mm for Sportster/ Dyna Narrow Glide features a Hard Chrome Finish on the Fork Tubes for a sleek and stylish look.

TC Bros. Extended Fork Tube Kit (+6") for Harley-Davidson 39mm Forks includes chrome tubes, spacers, rubber rings, washers, screws, and hardware—ideal for upgrading Sportster and Dyna motorcycles.

The TC Bros. Extended Fork Tube Kit (+8") for Harley-Davidson 39mm Forks includes two chrome tubes, white spacers, seals, O-rings, clips, and bolts—displayed together on a white background.

A set of TC Bros. Gold Titanium Nitride Coated Fork Tubes Stock Length 39mm for Sportster/ Dyna Narrow Glide on a white background.

A set of brass **Gold Titanium Nitride Coated Fork Tubes +2" Length 39mm** and seals for a **TC Bros. Sportster/ Dyna Narrow Glide** motorcycle.

A set of Black DLC Coated Fork Tubes "Stock Length" 39mm for Sportster/ Dyna Narrow Glide by TC Bros. on a white background, featuring Fitment Notes.

Two TC Bros. Extended Fork Tubes +2" 39mm for Sportster/ Dyna Narrow Glide on a white background with a Hard Chrome Finish.

Two Gold Titanium Nitride Coated Fork Tubes +2" Length 39mm for Sportster/ Dyna Narrow Glide by TC Bros. on a white background.

A TC Bros. Black DLC Coated Fork Tubes "Stock Length" 39mm for Sportster/ Dyna Narrow Glide, with a metal tube on a white background, featuring Fitment Notes.

A black pipe on a white background enhanced with TC Bros. Black DLC Coated Fork Tubes "Stock Length" 39mm for Sportster/ Dyna Narrow Glide.

Three pairs of metal tubes in silver, gold, and black from the TC Bros. Fork Tube Kit for Harley-Davidson 39mm (Late FXR, Early Dyna, Evo Sportster) are shown with assorted circular seals, clips, and washers arranged below them.

A TC Bros. Black DLC Coated Fork Tubes "Stock Length" 39mm for Sportster/ Dyna Narrow Glide motorcycle is parked in a parking lot. [Fitment Notes]

A TC Bros. Gold Titanium Nitride Coated Fork Tubes +2" Length 39mm for Sportster/ Dyna Narrow Glide motorcycle parked in front of a house.

A TC Bros. Extended Fork Tube Kit +4" 39mm for Sportster/ Dyna Narrow Glide with a white and black Hard Chrome Finish is parked on the sidewalk.

A TC Bros. Gold Titanium Nitride Coated Fork Tubes Stock Length 39mm for Sportster/ Dyna Narrow Glide motorcycle parked in front of a building.

$299.95

Color — Chrome

Chrome

Black

Gold

Add Fork Oil

Services one complete fork

Add Upper Fork Bushings

Set of two

Add Lower Fork Bushings

Set of two

Add Premium Springs

Improve ride and control with upgraded fork springs

In stock
Inventory on the way

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TC Bros. Fork Tube Kit For Harley-Davidson 39mm (Late FXR, Early Dyna, and Evo Sportster)

If you’re rebuilding a fork and found the tubes damaged, you may need replacements. And if you’re building a chopper, you may require a longer fork. In either scenario, these TC Bros. kits will help you refresh a factory-length fork or convert your OE front end into a custom-length fork suitable for choppers with additional frame rake.

This fork tube kit contains the items you need to extend hydraulic 39mm (commonly called “narrowglide”) front ends originally found on many Harley-Davidson FXR, Sportster (XL) and Dyna (FXD) motorcycles
Tubes are centerless-ground
ID and OD match OEM specifications
Fork oil available separately
For superior performance, we recommend the use of a heavy duty fork spring
Kit contains 2 fork tubes, 2 fork oil seals, 2 dust seals, 2 oil seal retaining rings, 2 oil seal O-rings, 2 damper tube bolts with washers, 2 oil seal spacers, 4 damper tube rings
Full overhaul kits are available separately if your fork requires new bushings
- Selecting both upper and lower bushings is nearly the same as adding a full overhaul kit except backup rings are not included—these are reusable on almost every fork, so it's usually much more economical to add bushings (and why we offer them!)
Fork spring spacers are included where required (extended tubes)
Detailed installation instructions are included
Available in three finishes
- Chrome
  - Hard chrome finish promotes responsive suspension action, low stiction, and helps prevent premature seal wear
  - Tubes are buffed and hard chrome plated for a durable finish
  - Approximately 55-60 Rockwell hardness
- Titanium nitride (TiN)
  - TiN coating reduces friction and increases wear resistance
  - An extremely hard ceramic material, TiN coating is approximately 85 Rockwell hardness
  - Gives your fork the same visual appearance found on most high-end motorcycle suspension systems
- Diamond-like carbon (DLC)
  - Diamond-like carbon (DLC) reduces abrasive wear and has an exceptionally low coefficient of friction
  - Approximately 75-83 Rockwell hardness
  - This finish delivers a stunning black appearance that’s a good alternative to traditional hard chrome
Available in several lengths
- Stock Length: 25” overall length
- +2” Over: 27" overall length
- +4” Over: 29" overall length
- +6” Over: 31" overall length
- +8” Over: 33" overall length
- How to measure your fork tubes

1987-2015 Harley-Davidson Sportster (XL) exc. 1996-2003 XL1200S Sportster Sport
1987-1994 Harley-Davidson FXR
1991-2005 Harley-Davidson Dyna (FXD) exc. Dyna Switchback (FLD), Dyna Super Glide Sport (FXDX), Dyna Super Glide T-Sport (FXDXT), and Dyna Low Rider S (FXDLS)
These tubes are compatible with 2016-2022 Harley-Davidson Sportsters with 39mm fork if OE internals found in the right tube are procured (available separately) and installed into the left tube in place of the OE cartridge assembly