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Click to see larger picture
Horstman HDC-3 Dry Clutch
for Yamaha KT100S
The HDC-3 clutch model is now old technology since the release of the HDC-5 2-1/2" designs.
Spare parts will be available as demand dictates. Click here for owner's manual.

spacer drum bearing disc pressure plate lever support dowell pins levers coned washer LH nut starter nut retainers springs Drive Hub NO LONGER AVAILABLE
HDC-3 PARTS
Part# Ref# Description List Sell
H322300 1 Spacer .145"
(use with 10t #219 / 11t #215 drums)
3.94 3.15
H323800 1 Spacer .145"
(use with 11t#219 / 9t#35 / 12t #215 drums)
3.94 3.15
H325900 1 Spacer .145"
(use with 12t#219 / 10t#35 / 13t#215 drums)
3.94 3.15
H333301 2 10t #219 aluminum drum 72.39 54.29
H333302 2 11t #219 aluminum drum 65.80 49.35
H333303 2 12t #219 aluminum drum 65.80 49.35
H333320 2 15t #219 aluminum drum 65.80 49.35
H333304 2 9t #35 aluminum drum 65.80 49.35
H333305 2 10t #35 aluminum drum 65.80 49.35
H333307 2 11t #219 steel drum 71.13 53.35
H330151   HDC Aluminum Drum with bolts 36.06 27.05
H330152   HDC Steel Drum with bolts 37.49 28.12
H330134   Sprocket, 9t #35 36.05 28.84
H330135   Sprocket, 10t #35 37.49 29.99
H330136   Sprocket, 15t #35 40.38 32.30
H330137   Sprocket, 10t #219 43.26 34.61
H330138   Sprocket, 11t #219 36.05 28.84
H330139   Sprocket, 12t #219 40.38 32.30
H330140   Sprocket, 13t #219 41.83 33.46
H330141   Sprocket, 15t #219 43.26 34.61
H330147   Screw, 10-31 x ¼" flat head 0.44 0.35
H330400 3 Bearing (10t #219 & 11t #215) 15.33 12.26
H300300 3 Bushing (9t #35/11t #219/12t #215) 6.73 5.38
H300400 3 Bearing (10t#35/12t #219/13t #215) 10.08 8.06
H971031 5 Friction Disc 41.79 37.61
H330025 6 Pressure Plate - replaced by H333328
fits HDC-2 and HDC-3 clutches
   
H333328 6 Pressure Plate
Fits HDC 2 & 3.  Use this instead of #H333359
92.70 69.53
H330026 7 Lever Support 71.15 53.36
H330027 8 Dowell Pin 0.80 0.64
H330028 9 Lever, LH Snub
fits HDC-2 clutches
4.27 3.42
H330029 9 Lever, RH Standard
fits HDC-2 clutches
4.27 3.42
H330037 9 T-Slot Lever 10g 
fits HDC-3 clutches
11.29 9.03
H326600 10 Coned Washer 5.51 4.41
H326700 11 Nut 1-1/8" LH 8.52 6.82
H703600 12 Starter Nut 22.82 18.26
H330031 13 Spring Adjuster 4.14 3.31
H334700 13 Spring Retainers
Use with new style pressure plate
1.23 0.98
H334800 13 Screw, Spring Retainer
fits H333328 pressure plate
1.23 0.98
H328200 14 Spring, .085" wire (optional) 5.07 4.06
H514200 14 Spring, .072" wire (optional) 3.96 3.17
H309300   Woodruff key 2.38 1.90

Blueprinted Clutch Springs

Rieken's Racing offers expert rebuilding of all Horstman disc clutches.  Please email for details.

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