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783
CLASSIC
Spring Fork
Spring Fork Stem Nut
Colony  VT No.  Finish 
Fits
8484-1  8484-1T  Chrome  1936-48 Big Twin
8485-1  8485-1T  Cadmium  1936-48 Big Twin
9720-1   
Parkerized 1936-48 Big Twin
8486-1  8486-1T  Chrome  1929-57 45”
8487-1  8487-1T  Cadmium  1929-57 45”
9713-1   
Parkerized 1929-57 45”
Spring Fork Conversion Kit 
allows installation of 45” type 
small post rear forks to be 
installed on Big Twin 74” frames. 
Includes parts shown, available 
zinc and black oxide finish.
VT No. 49-0086
Lower Bearing Guard centers lower race on stem.
VT No. 
OEM  
Fits
49-2000 
48361-38 
1936-48 Big Twin
49-2001 
48363-40 
1936-57 G
 
 
 
1936-52 W
Ball Bearing Neck Cups available in pairs as cups only or kit 
with races and ball bearings.
VT No.  OEM 
Years 
Use  
Finish
24-0109  48311-36 
1936-47  74” and 80”  Zinc Cups Only
24-1763   
1936-47  74” and 80”  Raw
24-1780  Cadmium  1936-47  74” and 80”  Cadmium
24-0134  Kit 
     — 
74” and 80”  Chrome
24-1078 Kit 
1936-47   
 
Parkerized
24-1569 Kit 
1930-36  VL   
Zinc
24-0110  48310-30 
1930-52  45”   
Zinc Cups Only
24-0093 Kit 
1939-57  45”   
Chrome
12-0157 8860 
⁵⁄₁₆
” 
Balls 
50 pieces
12-0128 8860 
⁵⁄₁₆
” 
Balls 
30 pieces
Ball Bearing Races fit Big Twin Spring Fork and 
1952-77 Sportster type, 1929-57 45’s. Sold each.
VT No. 
OEM 
Years 
Use 
24-0099  48346-39  1929-57  Upper and Lower 45” 
24-0100  48345-36  1936-48  Upper and Lower 74” and 80”
49-1507  
1936-38  Lower 
24-0638  Special 
1936-37  45” Stem fits Big Twin
24-1078 45” 
1929-57  Kit
Cone Nut Wrench features pins to turn cog style 
cone nut ³⁄₈”drive. 
VT No. 16-0178
Chrome Stem Nut. The shoulder on its base fits  into the top 
triple clamp for positive alignment.
VT No. 
Fits
37-0442 
Big Twin
7802-1 
Big Twin, Colony
24-1459 
Big Twin, Early Years
8008-1 
45” Model, Colony
49-0059 
Stem, BT
49-0028 
Stem 45"
Replica Spring Fork Cone Nut is  gear type with dust shield 
pressed on.
VT No.  OEM 
Fits 
Year 
Finish
24-1415 2753-31 
61” 
1936 only 
Nickel Plate
24-1370 Nickel 
 
1936 only 
Unpolished Plate
24-1313 2753-36 
74-80” 
1937-39 
Nickel Plate
24-0150 48327-36  74-80” 
1936-47 
Black
24-0679 48327-36  74-80” 
1936-47 
Chrome
24-0151 48335-40  45” 
1940-47 Black
24-0156 Conversion 45” to 74”  Nut, ⁷⁄₈” thread Black
24-0638 Conversion 45” to 74”  Race Only 
Black
Complete Spring Fork Installation Kits include plated neck 
cups, ball bearings, upper and lower races, nut with dust cover 
pressed on and top nut.
VT No.  Years 
Model 
Finish
24-0655  1939-57  45” and Servi-car  Zinc
24-0656  1941-48  Big Twin 
Zinc
24-0661  1941-48  Big Twin 
Chrome
24-1373  1939-40  Big Twin 
Zinc
49-0034  1936-38  Big Twin 
Cadmium
*Note: Big Twins use 34 balls, 45” use 30 balls.
24-0655
24-0656
49-0086 
24-0109
24-0110
Tapered Bearing Conversion Kits.
VT No.  Years 
Model
24-0230  1936-48  Big Twin
24-0245  1939-57  45” and Servi
24-0230
24-0245
37-0442
7802-1
24-1459
8008-1
24-0156
24-0151
24-1313
24-0638
24-0679
Knucklehead Spring Fork Bear-
ing Assembly
 includes cadmium 
plated neck cup set, cadmium stem 
nut, nickel plated cone nut with 
integral upper race, lower race and 
balls.
VT No. 49-0034
24-0134
24-1373
24-0150
24-1415
Fork Bearing Race Set includes 1 threaded 
upper and 1 lower race. Fits 1930-1936 VL.
VT No. 24-1749