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1251
MULTI FIT/CHOPPER
Seat Post
Seat Posts for 74, 80 and 45 models are assembled with springs 
and hardware. Top clevis pin and bottom nut are sold separately. 
Note: 49-1933 post is diameter 1.060”, 49-0181 and 49-1929 
posts are 1.180” diameter
VT No.  OEM  
Fits 
   
 
Finish
45 Solo & Servi-Car  1.060” Diameter with 14³⁄₄” Spring Rod
49-1933  
51602-30   1930-73 45’s   
Black
49-1926  Heavy 
1930-73 45’s   
Black
49-2019  Heavy 
1930-73 45’s   
Chrome
49-0006 15⁷⁄₈” 
1937-52 W 
 
Parkerized
Big Twin 1.180” Diameter
VT No.  OEM 
Fits 
   
 
   
Finish
49-1929  51610-58   1936-80 Big Twin    
Chrome
49-0181  51610-58   1936-80 Big Twin    
Black
49-0271  51610-36   1936-80 Big Twin    
Parkerized
 
 
  Heavy Duty
49-2085  51610-36   1936-80 Big Twin,    
Chrome
 
 
  Heavy Duty
49-0247      — 
1936-64 Big Twin    
Zinc
49-0248      — 
1936-64 Big Twin    
Cadmium
 
 
  Heavy Duty
Replacement Parts
VT No.  OEM 
Item
49-1560  
Inner Rod Kit with Spring Kit
13-0214  Set 
1936-80 Spring Set, 6 piece
49-0293  
Rebuild Kit
49-1934  51661-36 
Big Twin Seat Post
 
 
Inner Rod with Spacer
8623-2  51918-29 
Top Clevis Pin, Parkerized
  
51920-29 
and Spring Kit
49-0242  As Above  Zinc
49-0226  51791-31 
Spring Spacer
49-0267   
Upper Tube Big Twin Cad Plated
Note: Seat “Tee” Components are compatible with the seat 
spring posts as fitted to 1930-80 models of Big Twins and 45 
models. Big Twins 1930-80 are machined to fit a seat post 
bushing and seat post.
49-1933
Seat Post Bushings. Bronze.
VT No.  Years 
Model
8859-1  1929-73 45
7708-1  1936-57  Big Twin
7708-1T 1936-57  Big Twin
10-1288 1936-57  Big Twin
10-2497 1958-79  Big Twin
2084-2  1958-79  Big Twin
Seat Post Bushing 
Installation Tools.
2086-1
 
1936-57  Big Twin
2085-2 
1958-79  Big Twin
2086-1
 2085-2
Seat Clevis Pin and Spring is a reproduction of 
seat pin and spring retainer used on all models 
with seat post 1929-up.
VT No.   Item
8623-2  
Kit
8623-2T Kit, V-Twin
2731-2 Pin
Heavy Duty Seat Post Spring 
Set
 includes full set of springs 
and spacers.
VT No.  
Item
13-9253 
Kit
49-0263 
Spacer Set
13-9253
49-0263
10-1288
10-2497
 8859-1
Mini-Shock will replace Big Twin seat 
post in 1936-80 frames includes adapter 
clevis to connect to tee.
VT No.   Item
54-0650  
Mini-Shock
54-0955  Mini-Shock 4”
54-0407 Clevis
Seat Post Rod Lock Nut and 
Lockwasher
 fits all models 1925-81 
except FX, FL. Replaces 51674-25.
VT No.   Finish
8874-2  
Cadmium
8874-2T Zinc
9691-2 Parkerized
9691-2
2677-10TW
49-0248
49-0271
49-1929
49-2085
2612-10TW
2659-10TW
54-0955
54-0650
54-0650 
Installed
8874-2T
Seat T and Shock Piston Set.
VT No.   Finish
31-0965  
Chrome
31-1781  Black
54-0057 Bushing
31-1781
31-0965
54-0407
Rod Kit
Colony  VT No 
Size  Fits
2659-10  2659-10TW  15⁷⁄₈”  1929-73 G, 1929-52 W
2677-10  2677-10TW  16⁷⁄₈”  1941-80 FL, 1936-40 EL, 1937-48 UL
2612-10  2612-10TW  15⁷⁄₈”  1941-80 FL, 1936-40 EL, 1937-48 UL