TC Bros. Fork Tube Kit For Harley-Davidson 39mm (Late FXR, Early Dyna, and Evo Sportster)TC Bros. Fork Tube Kit For Harley Davidson 39mm (Late FXR, Early Dyna, and Evo Sportster) If youre rebuilding a fork and found the tubes damaged, you may need replacements. And if youre 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