167
Progressive Suspension
Fork Springs feature high
quality, high performance
replacement fork springs
eliminate front end sag,
reduce nose dive under
braking, improve corner-
ing stability, increase ride
comfort and allow forks to
utilize full travel. Sold in
pairs.
VT No. Size Fits
24-2057 39 1987-93 FXRS-SP, 1988-93 FXRT,
1991-up Dyna Glide, not FXDWG
24-2056 39 1987-94 FXLR, 1988-95 FXR-FXRS,
24-2048 41 1984-up FXST-FLST-FLSTF-FXDWG,
1980-up FLT-FLHT-FLHS,
1980-86 FXWG, 1948-84 FL
24-2040 35 1983-87 FXRT, 1982-87 FXR-FXRS,
1985-86 FXRD, 1973-86 FX-FXE-FXS-FXSB
20th Century Fork Spring Lowering Kits have progressively
wound springs that resist bottoming out. Installation requires
minor disassembly to lower the front forks 1 1/4" or 2" depend-
ing on the spacer used. Kit includes springs, spacers and
hardware. Easily converts back to stock by reinstalling stock
fork springs.
VT No. Type Year/Model
24-0159 41mm 1984-up FXST, 1980-up FXWG
Street Tough Fork
Springs by 20th
Century Suspension.
Progressively wound
springs are made
using drawn spring
wire. Eliminates front
end sag, reduces nose
dive under braking and
improves stability.
VT No. MM Year Type
24-0163 39 1988-91 Showa, FXRS
Fork Spring Kits
Progressive
Suspension Fork
Lowering Kits.
Each kit comes with
Progressive rate fork
springs and spacers. Each
kit can be installed at two
different levels to lower fork
1" or 2".
VT No. Fits
24-1561 1984-up FXST-FLST,1993-up FXDWG,
1980-up FLH-FLT, 1978-86 FL-FXWG
24-1560 1991-92 FXD, 1993-up FXDL-FXDS,
1988-94 FXR-FXLR
24-1559 1982-87 FXR-FXRS, 1983-87 FXRT,
1984-86 FX
Fork Tube
Spring Sets fea-
ture high tensile
strength wire
construction with
ground ends.
Sold in pairs for
OEM replace-
ment per the
factory number.
For more fork
spring applications check factory parts book.
VT No. OEM
Year/Model
39mm
41mm
24-0908 45837-77 1977-84 FLH, 1980-83 FLT
24-0911 46048-84 1984-99 FXST-FXSTC
Fork
Springs
Lower Damper Tube Springs.
VT No. OEM Fits
13-9258 45374-87 87-up FXR-FXD, pair
13-1946 45933-86 86-up FLST, 2000-up FXDWG
“Full" Lowering Kits include components to lower the front
and rear of ST models. Each kit includes shorter damper rods,
1" shorter kickstand and adjustable rear shock lowering set. The
front of the FXST is lowered 2.5" and 2" on FLST models. Rear
is adjustable up to 1.5" on 2000-up models and up to 2" lower
on 1989-99 models, using stock shocks.
VT No. Year
Note: When installing these kits, you
must check ground clearance and tire
to fender clearance.
“Full" Lowering Kits
