Horstman's new generation of disc clutches engineered for today's high performance 4 stroke Engines.

  • 3 1/4” diameter for lower rotational inertia
  • 2 Disc 6 spring style with Horstman’s innovative external adjustability feature
  • Cooling vanes to extract unwanted heat
  • Over 15% increase in friction surface … better grip and heat sink
  • Lightweight aluminum drum with replaceable clips …Optional Steel Drum available 
  • Removable Sprockets from 11T to 23T with square lug drive eliminates retaining ring 
  • Thicker plates CNC machined from billet for greater rigidity to provide positive lock up 
  • Cryogenic treatment of components run cooler ….last up to 300% longer
  • New drive lug shape for smoother engagement … keyway is thicker for longevity
  • Plates attached with ¼ screws for rigidity and easy removal during maintenance
  • Fits ¾” crankshaft or jackshaft for 5-20 hp

Complete Clutch Assembly $350.00

Aluminum Drum

   Steel Drum
#35 chain #219 chain

SPK

 #35 chain #219 chain
490111  

11

 490131  
490112   12 490132  
490113   13 490133  
490114   14 490134  
490115 490124 15 490135 490144
490116   16 490136  
490117 490125 17 490137 490145
490118   18 490138  
490119 490126 19 490139 490146
490120 490127 20 490140 490147
490121 490128 21 490141 490148
490122 490129 23 490142 490149


patents pending

Drum Kit - Drum-Sprocket-Bearing-Hardware
Aluminum Drum $59.95   Steel Drum $64.90
#35 chain #219 chain

SPK

 #35 chain #219 chain
490071    11 490091   
490072    12 490092   
490073    13 490093   
490074    14 490094   
490075 490084 15 490095 490105
490076    16 490096   
490077 490085 17 490097 490106
490078    18 490098   
490079 490086 19 490099 490107
490080 490087 20 490101 490108
490081 490088 21 490102 490109
490082 490089 23 490103 490110

Sprocket Kit $24.95
Sprocket-Bearing-Hardware
#35 chain Size #219 chain
490051 11  
490052 12  
490053 13  
490054 14  
490055 15 490064
490056 16  
490057 17 490065
490058 18  
490059 19 490066
490060 20 490067
490061 21 490068
490062 23 490069

Item# Part# Description

Retail
1 490001 Spacer    .985” x .752” x .062”  universal $1.50
2 463000 Snap ring,  12T-23T clutch $0.94
3 490003 Washer,   1 1/8”  diameter  12T & 13T #35 & 15T  #219  clutch $1.30
  490004 Washer, 1 ¼” diameter 14T-23T #35  & 17T-23T  #219  clutch $1.30
4 463600 Bearing, bronze  11T #35 clutch only $7.03
                463400 Bearing, bronze  12T & 13T #35 and 15T #219 $8.50
  463500 Bearing, roller   14T-23T #35 and 17T –23T #219 $8.91
5 See chart Sprocket with bearing and screws $24.95
6 490006 Aluminum drum w/clips  2 disc model ( less sprocket)  “ purple “ $34.95
  490019 Billet Steel drum     “black color” $39.95
7 312901 Screw, 10-32 x 5/16 flat head   (set of 4) $1.00
8 490007 Clips   (set of 3) $4.95
9 490035 Thrust washer, 11T #35 clutch only $1.50
  490028 Thrust washer, 12T –23T  clutch $1.43
10 490036 Thrust bearing, 11T #35 clutch only $4.50
  480079 Thrust bearing, 12T-23T clutch $4.01
11 490005 Spacer, 11T #35 clutch only $4.10
  490025 Spacer, 12T-23T clutch $4.30
12 490026 Screw, ¼-28 x 3/8 flat socket head   (set of 6) $1.80
13 490014 Fixed plate $39.95
14 490037 Drive hub  for 2 disc model ,   11T #35 clutch only   $59.95
  490016 Drive hub  for 2 disc model,    12T-23T clutch $69.95
15 490015 Friction disc $19.95
16 490013 Floater    . 085”  thick $16.95
  490020 Floater     .065” $16.95
  490021 Floater     .075” $16.95
  490022 Floater     .095” $16.95
  490023 Floater     .105” $16.95
17 490012 Pressure Plate $59.95
18 490011 Lever Support $34.95
19 490038 Dowel pins   (set of 6) $4.14
20 490008 Lever            $6.00
21 490039 Weight kit  (6 bolts, 24 washers, 6 lock nuts) $6.50
  480140 Brass weights  6 pack  $9.98
22 4649-X Spring,  Red      .091”   wire   (set of 6) $23.95
  4650-X Spring,  Black   .085”   wire   (set of 6) $19.95
  5142-X Spring,  Blue     .075”   wire   (set of 6) $19.95
23 334701 Retainer  (set of  6) $5.95
24 334801 Stall speed adjusting screw   (set of 6) $1.50
25 490032 Screw   ¼-28 x 5/8 socket head  (set of 6) $1.80
26 490029 Key  $2.10
27 490031 Step washer $1.95
28 465500 Lock washer $0.10
29 465300 Bolt $0.73
  490044 Spanner Wrench  “purple color”       $14.95
  490045 Outboard Mounting Kit  (spacer, step washer, & bolt) $12.95
490046 Rebuild Kit  ( 2 friction discs, 1 floater, 6 red springs,  6 adj. screws) $79.95


©copyright 2002
Horstman Manufacturing Co., Inc.
2510 Pioneer Ave.
Vista, CA 92083

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