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909
XL
XL
39mm Street Tough Fork Springs 
by 20th Century Suspension. 
Progressively wound springs are 
made using drawn spring wire. 
Eliminate front end sag, reduce 
nose dive under braking and 
improve stability. Fits 1988-91 
Showa.
VT No. 24-0164
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 applica-
tions check factory parts book.
Fork Spring
20th Century Fork Spring 
Lowering Kits 
for Showa forks 
have progressively wound springs 
that resist bottoming out. Installation 
requires minor disassembly to lower 
the front forks 1 1/4” or 2” depending 
on the spacer used. Kit includes springs, spacers and hard-
ware. Easily converts back to stock by reinstalling stock fork 
springs. 
Progressive Suspension 
Fork Lowering Kits.
Each kit comes  with 
Progressive rate fork springs 
and spacers. Each kit can be 
installed at two different lev-
els to lower fork 1” or 2”.
VT No.  Fits
24-1560
 1988-up
24-1559 1984-87
24-0160
Progressive Suspension Fork Springs feature high quality, 
high performance replacement fork springs that eliminate front 
end sag, reduce nose dive under braking, improve cornering 
stability, increase ride comfort and allow forks to utilize full 
travel. Sold in pairs. 
VT No.  Size  Fits 
24-0883  
39  2004-up XL 
24-2056  39  1988-up XL except Hugger 
24-2045  39  1992-up XL Hugger
24-2040  35  1952-87 XL-XR
24-2040
24-2056
Chrome 35 mm Fork Plugs.
VT No.  OEM 
Year
7622-1 45993-73 1973-85
7622-1T 45993-73  1973-85
37-8988  As Above  Pair
24-0166* 45933-74  1974-85
8863-1 45993-86 Late1985-Mid87
*Note: 24-0166 is drilled and tapped to accept gauge mounts.
Chrome 39 mm Fork Plugs. Replace 45596-87.
VT No.  Year 
Type 
  UM
9914-2  As Above  Domed    Each
24-0335*  1988-up 
Flat top type Pair
24-0335
9914-2
24-0166
37-8988
Chrome Top Fork Tube Plug 
replaces 45756-59. Sold each. For 
1957-72.
VT No. 7621-1
33.4, 35 & 39 mm Fork Plug
Fork Tube Spring Retainers and Pin Wrench 
Kit
 includes 2 retainers for 1952-72 XL and pin 
wrench for installation removal of retainers.
VT No. 7700-3
VT No. 
Type 
Fits 
24-0862 
35 mm 
1973-85
24-0863 
39 mm 
1988-up
24-0863
E-Z Fill Fork Tube Top 
Plugs
 feature a small oil fill 
cap built into fork tube  top 
plug which will allow fork oil 
change/fill without removing 
top fork cap. Pairs.
VT No.  Type  Model
24-0160
 39mm 1987-95
24-0161 35mm 1975-87
VT No.   OEM  
Fits 
MM
33.4mm
24-0822
   46057-52  1952-70 XLH-XLCH  
33.4
24-0900  46057-71  1971-72 XLH 
33.4
24-0901  45984-73  1973-74 XL  
35
24-0904  45408-75  1976-83 XLH-XLCH 
35
24-0903   45987-77  1979 XLS 
35
24-0905  45907-80  1980-83 XL  
35
24-0906  46052-80  1980-82 XLS  
35
24-0913  45376-87  1987-94 XL 
39
 
 
Except Hugger
24-0933 45372-92  1992-96 
39
24-0919 45376-97  1997-2003 
39
24-0932 45376-04  2004-2008 
39
7622-1
7622-1T
8863-1