Standard length is 521 mm.

Standard length for FL and FLT models is 527 mm (OEM 45825-77A).
Standard length for FXWG models is 629 mm (OEM 45417-80).

Our 41 mm fork tubes can be used as OEM replacement or to lower or raise the front section. Resulting alternations of steering angle and castor must be taken into account.
To choose the right length please compare to the existingtubes.

Our 41 mm fork tubes can be used as OEM replacement or to lower or raise the front section. Resulting alternations of steering angle and castor must be taken into account.
To choose the right length please compare to the existingtubes.

The standard length of the Kayaba fork tubes is 598 mm (OEM 45977-73).

There are two different standard lengths:
592 mm tubes on all XLH and XLCH 1975-1983, XLS and XLX 1983, and XLCR 1977, 642 mm on XLS 1979-1982, FXS 1977-1982, FXB and FXSB 1980-1983, and last but not least FXR 1982-1983.,

The 35 mm fork tubes for 1984-early 1986 were used in two standard lengths:
597 mm on all Sportsters (XL, XLS and XLX 1984-85, and XLH early 1986) and FXEF 1985, FXRS 1984-early 1986, and FXR early 1986., 648 mm on FXSB 1984-1985, FXRT 1983-early 1986, and FXRD early 1986.,

Our selection of 39 mm fork tubes is based in the 616 mm which are replacement for several OEM applications:
OEM 45407-86 on all Sportsters (XLH) 1986-1987 and FXR(S) late 1986-1987, OEM 45395-92 on XLH Hugger 1992-1994 and 1999-2003 as well as all XLH (exc. 1200S) 1995-1996 and, OEM 45360-90 on all Dyna 1991-1992 and FXDL 1993-2000.,
Other models' standard tubes had differing lengths, so e.g.:
593 mm (OEM 45381-87): all Sportsters (XLH) 1988-1994 (exc. Hugger 1992-1994), FXLR 1987-1990 and 1994, FXR(S) 1988-1994, 644 mm (OEM 45393-87): FXRS-SP 1987-1990 and 1993-1994, FXRS-CON and FXRT 1988-1994.,
To choose the right tube length we recommend measuring and comparing your old tubes.

Our selection of 49 mm fork tubes is based in the 2006-2017 Dyna models:
649 mm on FXD (OEM 46605-06) and, 700 mm on FXDWG (OEM 46617-06),
Moreover, 49 mm tubes are OEM equipment on Touring models 2014→ and Softail models 2018→, and XL Forty-Eight models 2016-2021, in various lengths. Our 49 mm fork tubes can be used to lower or raise the front section. Resulting alternations of steering angle and castor must be taken into account.