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Rieken's Racing Horstman Clutches

X5

X5 single disc for Briggs Junior Karting competition
X5 two disc for Briggs Senior competition
The little clutch that packs a big punch!!!
Compare 2.850" disc size vs 3-1/2" clutches!

  • Unique 5 spring x 5 lever configuration provides balanced pressure points
    enhance lock up and reduce hot spots for improved consistency
  • Cooling vanes in drive hub extract unwanted heat to keep clutch cooler
  • One-piece style drive hub stronger… will not flex under load …stays truer
  • Pressure Plate and drive hub have air vent holes for dust removal, less weight,
    improved cooling …extra thick in clamping area for rigidity and heat sink
  • Replaceable bolt-on sprocket attaches solid to drum, runs truer, no flexing,
    eliminates power robbing drum distortion
  • Billet steel drum…lightweight and long lasting with no pins or clips to replace
  • Levers CNC machined for uniformity
  • Cryogenic treated at -310 to reduce wear up to 300% and improve cooling
  • Assembled with five ¼” bolts for better clamping strength and ease in disassembly
  • Cerametallic friction disc for aggressive lock up
  • Blueprinted springs installed in matched sets for equal tension
  • Fits ¾” crankshaft
  • Owner's Manual
Part# Description List Sell
X5 Clutch, single disc complete
For #35 Chain		 339.49 237.64
X5 Clutch, single disc complete
For #35 Chain  (Arena Clutch)		 339.49 237.64
X5 Clutch, single disc complete
For #219 Chain		 339.49 237.64
X5 Clutch, two disc complete
For #35 Chain		 360.71 252.50
X5 Clutch, two disc complete
For #35 Chain  (Arena Clutch)		 360.71 252.50
X5 Clutch, two disc complete
For #219 Chain		 360.71 252.50
Sprocket Kit Bolt-On Sprocket
with hardware
Part# List Sell
27.26 21.81

Fits both X-5 & Reaper clutches
X5 Drum Kit Drum & Sprocket Assy.
For One Disc Clutch
Part# List Sell
61.85 46.39
Drum & Sprocket Assy.
 For Two Disc Clutch
Part# List Sell
62.97 47.23


X-5 Parts
Ref# Part # Description List Sell
0 H490001 Spacer, use with 11T #35 clutch only 1.68 1.34
1 H463000 Snap Ring, 12T - 23T clutch 1.09 0.87
2 H490003 Washer, 1-1/8" OD
fits 12T & 13T #35 and 15T #219 clutches		 1.46 1.17
  H490004 Washer, 1-1/4" OD
fits 14T-23T #35 and 17T-23T #219 clutches		 1.46 1.17
3 H300300 Bearing, bronze
fits 9T #35 Arena sprocket		 5.61 4.49
  H300400 Bearing, roller
fits 10T #35 Arena sprocket		 8.40 6.72
  H463600 Bearing, bronze
fits 11T #35 clutch		 8.15 6.52
  H463400 Bearing, bronze
fits 12T & 13T #35 and 15T #219 clutches		 9.85 7.88
  H463500 Bearing, roller
fits 14T-23T #35 & 17T-23T #219 clutches		 10.33 8.26
4 See Chart Sprocket Kit, includes bearing & hardware    
4A H477701 Screw, 10-32 button head 0.24 0.19
5 See Above Drum Kit
includes bolt-on sprocket, bearing & hardware		    
5A H477702 Billet Steel Drum, one disc style 35.82 28.66
  H477880 Billet Steel Drum, two disc style 38.21 30.57
6 H490035 Thrust Washer
Fits 9T, 10T, 11T #35 Clutch		 1.68 1.34
  H480078 Thrust Washer
Fits 12T-23T Clutch		 1.61 1.29
7 H490036 Thrust Bearing
Fits 9T, 10T, 11T #35 Clutch		 5.06 4.05
  H480079 Thrust Bearing
Fits 12T-23T Clutch		 4.51 3.61
8 H477725 Drive hub
Fits 9T, 10T, 11T #35 one disc clutch		 67.47 53.98
  H477726 Drive hub
Fits 12T-23T one disc clutch		 73.11 58.49
  H477882 Drive hub
Fits 9T, 10T, 11T #35 two disc clutch		 67.48 53.98
  H477883 Drive hub
Fits 12T-23T two disc clutch		 73.11 58.49
9 H477729 Friction Disc, cerametallic 26.47 21.18
9 H477729B Friction Disc, "Powerbite", Iron, Optional 26.47 21.18
9A H477885 Floater, std. .085"
Fits two disc clutch only		 16.82 13.46
  H477886 Floater, .075"
Fits two disc clutch only		 16.82 13.46
  H477887 Floater, .095"
Fits two disc clutch only		 16.82 13.46
10 H477727 Pressure Plate 67.47 53.98
11 H477728 Lever Support 39.34 31.47
12 H480086 Dowell Pin 0.77 0.62
13 H490008 Lever 6.76 5.41
14 H477732 Weight Kit
5 bolts, 20 washers, 5 lock nuts		 7.31 5.85
15 H3130Y Spring, Yellow
HIGH TENSION -- Set of 5, Blueprinted		 22.44 17.95
  H4650Y Spring, Black
MEDIUM TENSION -- Set of 5, Blueprinted		 22.44 17.95
  H5142Y Spring, Blue
For stall speed below 2800 rpm -- Set of 5, Blueprinted		 22.44 17.95
16 H477733 Retainer, gold color 1.12 0.90
17 H334800 Screw, 10-32 x 3/4 Flat Head 1.07 0.86
18 H477734 Screw, 1/4-28 x 3/4 Socket Head 0.90 0.72
19 H477738 Spacer 3.93 3.14
20 H465100 Key 2.39 1.91
21 H465200 Washer, flat 0.81 0.65
22 H465500 Washer, lock 0.81 0.65
23 H465300 Bolt, 5/16-24 3/4" hex head grade 5 0.81 0.65
  H462700 Bolt, 5/16-24 1-1/2" hex head grade 5
fits 9T & 10T Arena Clutch only		 1.12 0.90
Opt H477735 Spanner Wrench, gold color 14.57 11.66
Opt H477889 Outboard Spacer Kit 14.57 11.66
Opt H477772 Arena Clutch Mounting Kit 33.21 26.57
Opt H477895 X5-D Update Kit 79.57 63.66
Opt H477896 Jumbo Levers (X5-D) 7.43 5.94
Opt H477897 Dowell Pins fits H477896 1.06 0.85
Opt H477898 Aluminum Lever Support X5-D 41.38 33.10
Order | Back to the Catalog | Rieken's Racing
 Rieken's Racing (319)373-2018     365 7th Ave., Marion, IA 52302
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Horstman Manufacturing Co., Inc.
2510 Pioneer Ave.
Vista, CA 92083
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