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588
Dual Disc Front Caliper 1977-83 FX
1977-83 FX Dual Disc Caliper Hardware. 
VT No.   #  OEM 
Item 
23-0509  A  44098-77  Pad Set (4) 
23-9198  B  44141-77  Seat, brake hose 
23-1731  C  44146-77  Bleeder Fitting 
23-0607  D  44151-77  Seal, piston
 
 44153-77
23-2278  E 44157-77  Piston
23-0523  F  44158-77  Plate, Outer
 
  44161-77  Plate, Inner
23-1734  G 44162-77  Pin
24-0602  H 44173-77  Screw
 
 44174-77
37-8970  I       — 
Chrome Insert, Each
24-0603  J  46018-77  Mount Bushing Set
 
  46019-77  Set of four, lower (2), upper (2)
Chrome Dual Rotor Caliper and Rotor Set includes two 
chrome calipers and two drilled rotors. Fits 1977-83
.
VT No. 
Item 
 
Rotor
23-0250  Caliper Rotor Set  Zinc Steel
23-0258  Caliper Rotor Set  Polished Stainless Steel
23-0259  Caliper Rotor Set  Stainless Steel
23-1214  Caliper Rotor Set  Zinc Steel
 Black
8831-10*  Bolt Set FXWG
8758-10  Bolt Set XL-FX
*Note: Two kits required.
Dual Disc Front Disc Calipers includes body, piston, seals. 
Dual type fits 1977-83 FX-FXWG with 10” brake discs. Order 
mounting hardware separately.
VT No. 
Side 
 
Finish 
Style
23-2221 Right   
Black 
A
23-1121 Right   
Chrome 
A
23-2238 Left 
 
Black 
A
23-1119  Right and Left 
Flat Black 
A
23-1122  Right and Left 
Black, ET 
B
23-2220  Right and Left 
Chrome, Daytona 
B
23-0550  Right and Left 
Chrome, ET 
A
23-2220
B Style
A Style
23-0259
23-0550
Chrome Lower Slider Set Only fits 1977-82 
dual disc 35mm forks.
VT No. 24-0541
Chrome Round Caliper Insert fits 1977-83 
dual calipers.
VT No. 37-8970
37-8970
Caliper Inserts
Narrow Glide Axle Cap with alloy finish. Fit 1973-83 
FX models with 35 and 39 mm fork tubes.
VT No.  OEM 
Fits
24-0505 45410-75 Left
24-0504 Chrome  Left
24-0603
24-0602
24-1731
Thread Chart
OEM Rear Master Cylinders
Kelsey-Hayes. Late 1979-84 FL, FX; 80-85 FXWG, FLT
3/8-24 Inverted Flare
Wagner-Lockheed. 58-Early 79 FL, FX
3/8-24 Inverted Flare
(Girling type) 83-Early 87 FX, 1982-Early 87 FXR
3/8”-24 Inverted Flare (to caliper)
1/8” NPT (to reservoir master cylinder)
All Late 1987-2002 Big Twin , TC/B, XL
3/8”-24 banjo bolt
All H-D Brake Tees
3/8”-24 Inverted Flare (brake line)
1/8 NPT (brake light switch)
23-1119
23-1122
23-1214