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BIG TWIN
Switch Blade Removable Windshield allows installation or removal in four seconds without tools. Available in three sizes for three styles of riding and features 4.0 
mm Lexan Polycarbonate with quantum coating in either clean or tint. Order mounting system separately.
Windshield
National Cycle Spartan Quick Release Windshield features a full size 
quantum clear hand coated polycarbonate windshield, quick release 
hardware and a black powder coated mounting frame. Available in 16¹⁄₄” 
and 18¹⁄₂” heights. Height is measured from head lamp cutout to top of 
shield.
VT No.   Height  Fits 
 
Mounting Hardware
51-0284 16¹⁄₄” 
1986-up FLST 
31-9939*
51-0285 16¹⁄₄” 
2006-up FXD 
31-9947
51-0286 18¹⁄₂” 
1986-up FLST 
31-9939*
51-0287 18¹⁄₂” 
2006-up FXD 
31-9938
*Note: When installing shield with spotlight bar use 31-9938 kit
National Cycle Wave QR Fairing manufactured from dark tint poly-
carbonate that features free flowing lines, adjustable rake partitioning 
and quick release mounting. Order mounting hardware separately.
VT No. 
Fits 
 
Mounting Hardware
51-0280 
2006-up FXD 
31-9947
51-0281 
1994-up FLHR 
31-9946
51-0282*  1986-up FLST 
31-9939
*Note: Will not work with spotlight bar
51-0281
51-0351
51-0356
51-0361
SwitchBlade® Quick-Release Windshields Applications
Model
Name
Year
Mount
Kit
2-up
Clear
Chopped
Clear
Chopped
Tint
Shorty
Clear
Shorty
Tint
Deflector
Clear
Deflector
Tint
FX NARROW GLIDE MODELS
with 39mm Fork Tubes
FXD/FXDL/FXDX/FXDC Dyna
1993-05
31-9936
51-0331
51-0354
51-0359
51-0332
51-0333
51-0334
51-0335
FXDS Dyna Convertible
1994-00
31-9936
51-0331
51-0354     
51-0359
51-0332
51-0333
51-0334
51-0335
FXLR Low Rider Custom
1988-94
31-9936
51-0331
51-0354     
51-0359
51-0332
51-0333
51-0334
51-0335
FXR/FXRS Low Rider
1982-94
31-9936
51-0331
51-0354     
51-0359
51-0332
51-0333
51-0334
51-0335
FX NARROW GLIDE MODELS
with 49mm Fork Tubes
FXD Super Glide
2006-10
31-9947
51-0352
51-0357
51-0362
FXD 35th Anniversary Super Glide
2007
31-9947
51-0352
51-0357
51-0362
FXDC Super Glide Custom
2006-14
31-9947
51-0352
51-0357
51-0362
FXDB Street Bob
2006-15
31-9947
51-0352
51-0357
51-0362
FXDL Low Rider
2006-09
31-9947
51-0352
51-0357
51-0362
FXDL Low Rider
2014-15
31-9947
51-0352
51-0357
51-0362
FX WIDE GLIDE MODELS
with 41mm Fork Tubes
FXDWG Dyna Wide Glide
1993-05
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FXWG Wide Glide
1980-85
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FXDG Glide
1983
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FX WIDE GLIDE MODELS
with 49mm Fork Tubes
FXDWG Dyna Wide Glide
2006-16
31-9947
51-0353
51-0358
51-0363
FXST MODELS
Softail
FXCW Rocker/Rocker C
2008-11
31-9947
51-0352
51-0357
51-0362
FXST Softail Standard
1984-90/
1999-12
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FXSTB Softail Night Train
1999-09
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FXSTC Softail Custom
1987-
99/07-10
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FXSTD Softail Deuce
2000-07
31-9937
51-0336
51-0355
51-0360
51-0338
51-0339
51-0340
FLS MODELS
Softail (Without Light Bar)
FLS Softail Slim
2012-15
31-9939
51-0341
51-0344
51-0345
FLST Heritage Softail
1986-90
31-9939
51-0341
51-0344
51-0345
FLSTC Heritage Softail Classic
1987-16
31-9939
51-0341
51-0344
51-0345
FLSTF Fat Boy
1990-16
31-9939
51-0341
51-0344
51-0345
FLSTFB Fat Boy Low/Fat Boy Special
2010-16
31-9939
51-0341
51-0344
51-0345
FLSTFBS Fat Boy S
2016
31-9939
51-0341
51-0344
51-0345
FLSTN Softail Deluxe**
2005-16
31-9939
51-0341
51-0344
51-0345
FLSTN Heritage Softail Nostalgia
1993
31-9939
51-0341
51-0344
51-0345
FLSTN/H Heritage Softail Special
1994-96
31-9939
51-0341
51-0344
51-0345
FLST Heritage Softail
2006
31-9938
51-0341
51-0344
51-0345
FLST Heritage Softail
1986-90
31-9938
51-0341
51-0344
51-0345
FLSTC Heritage Softail Classic
1987-16
31-9938
51-0341
51-0344
51-0345
FLSTF Fat Boy
1990-16
31-9938
51-0341
51-0344
51-0345
FLSTFB Fat Boy Low/Fat Boy Special
2010-16
31-9938
51-0341
51-0344
51-0345
FLSTFBS Fat Boy S
2016
31-9938
51-0341
51-0344
51-0345
FLSTN Heritage Softail Nostalgia
1993
31-9938
51-0341
51-0344
51-0345
FLSTN(H) Heritage Softail Special
1994-96
31-9938
51-0341
51-0344
51-0345
31-9947
31-9938
31-9939
51-0337   SWITCH BLADE REMOVABLE WINDSHIELD