Rieken's Racing: Horstman DXL Clutches

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Used

DXL Disc Clutch

Horstman's patented (U.S. Patent No. 4,111,291) DXL clutches are of the oil bath multiple disc design for two cycle racing. The DXL has been a proven winner since 1978 when they were first introduced. Many upgrades have been made since the originals in order to provide the racer with an economical yet high performance clutch. Features include three discs for positive hook up and easy adjustment of stall speed through the oil cover. For the Sr. Sportsman class and the Yamaha KT Lite class the four spring design DXL-991 is a good choice. For the Yamaha Heavy class, the six spring design DXL-3000 is preferred.
Owner's manual.

Part #	Complete DXL Clutches	List	Sell
	DXL-991 3 Disc 4 Spring Clutch	384.71	269.30
	DXL-3000 3 Disc 6 Spring Clutch	391.82	274.27
DXL9903B	3Disc Extended Hub Clutch Fits IAME Taper Specify #teeth & chain when ordering Only one left	406.07	284.25
	DXL-992 3 Disc 4 Spring Clutch For Vintage McCullough RH thread PTO	384.71	269.30
	DXL-993 3 Disc 4 Spring Clutch For Vintage McCullough LH thread PTO	384.71	269.30

DXL Drums & Clutch Parts
Clutch Spacers | Drums | Hubs | Miscellaneous Parts | Rebuild Kits

Ref#	Part #	Horstman Clutch Spacers	List	Sell
1		Spacer, special -- smaller O.D. (.665") For use with 10t #219 drums only Three widths available Tech tip: Usually takes a .105" with the 10t #219 drum	3.94	3.15
1		Spacer, standard O.D. (.740") Fits Standard Drums with bushings (9t#35 & 11t#219) 15 widths available Tech tip: Usually takes a .125" wide spacer	3.94	3.15
	H324500	Spacer Kit Contains 1 each standard spacer (.065" through .205")	56.49	42.37
1		Spacer, special -- larger O.D. (.830") For use with drums with needle bearing only Five widths available Tech tip: Usually takes a .125" wide spacer	3.94	3.15

Horstman DXL Clutch Drums

Ref#	Part #	Description	List	Sell
2	H322100	Replacement Bronze Bushing Fits 10t #219 drums Reaming required after installation	4.02	3.22
2	H300300	Replacement Brass Bushing Fits 9t #35 OR 11t #219 Reaming required after installation	6.73	5.38
2	H300400	Replacement Needle Bearing Fits DXL drums with needle bearing	10.08	8.06
3	H300900	Drum 9t #35	75.06	56.30
3	H301000	Drum 10t #35	76.94	57.71
3	H301100	Drum 11t #35	78.91	59.18
3	H301200	Drum 12t #35	79.85	59.89
3	H301300	Drum 13t #35	79.85	59.89
3	H301400	Drum 14t #35	79.85	59.89
3	H301500	Drum 15t #35	81.67	61.25
3	H322000	Drum 10t #219 -- Fits 1 Disc DXL clutch only	57.60	43.20
3	H331000	Drum 10t #219	70.06	52.55
3	H331100	Drum 11t #219	70.06	52.55
3	H331200	Drum 12t #219	70.94	53.21
3	H331300	Drum 13t #219	70.94	53.21
3	H331500	Drum 15t #219	73.74	55.31
3	H301900	Drum 19T Belt drive x 8mm pitch x 20mm wide	138.46	103.85

Horstman DXL Clutch Hubs

Ref#	Part #	Description	List	Sell
4	H390600	Hub, DXL-990 Fits 3 Disc Clutch (IAME taper)	115.28	86.46
4	H390700	Hub, DXL-2000 Fits 3 Disc Clutch (Rotary Valve taper 5°)	115.28	86.46
4	H390800	Hub, DXL-991 Fits 3 Disc Clutch (Yamaha taper)	115.28	86.46
4	H316500	Hub, DXL-990 3B Fits 3 Disc Extended Clutch (IAME taper)	123.42	92.57

Horstman DXL Clutch Parts

Ref#	Part #	Description	List	Sell
5		Shim -- Three thickness available	2.38	1.90
6	H334000	Standard Semi-Metallic Friction Disc	32.21	25.77
7		Floater Plate Two thickness available	26.75	21.40
8	H335000	Pressure Plate Fits all 4 Spring DXL Clutches	62.64	46.98
8	H334200	Pressure Plate Fits all 6 Spring DXL Clutches	66.22	49.67
9	H334400	Weight Guide Ring, chrome plated	20.84	16.67
10	H335100	Weight Support, aluminum Fits all 4 Spring DXL Clutches	92.05	69.04
10	H334500	Weight Support, aluminum Fits all 6 Spring DXL Clutches	94.84	71.13
11	H304800	Weight (Use With DXL-700 single Disc Clutch)	3.16	2.53
11	H305100	Weight, optional Snub Nose	3.35	2.68
11	H334600	Weight, chromed plated for 6 Spring	5.23	4.18
11	H335200	Weight, 4 Spring standard	3.31	2.65
11	H335300	Weight, 4 Spring with hole	3.31	2.65
11	H335400	Weight, optional with large hole	2.88	2.30
12	H303800	Gasket	3.34	2.67
13	H304200	Bearing for Aluminum Cover	12.55	10.04
14	H307000	Billet Aluminum Cover	85.40	64.05
	H307400	Snap ring - cover bearing retention	1.99	1.59
	H307500	Cover Washer, standard hub clutches	1.99	1.59
	H307600	Cover Washer, Extended hub clutches	2.47	1.98
15	H334900	Assembly Socket Head Cap Screw	1.18	0.94
15	H335500	Assembly Screw (for 2 disc clutch)	0.91	0.73
16	H313000	Spring, standard (.091" wire)	4.82	3.86
16	H313100	Spring, optional (.100" wire)	4.99	3.99
17	H334700	Retainer, spring For use with H313000 standard spring	1.23	0.98
17	H313200	Retainer, spring For use with H313100 optional spring	1.97	1.58
	H313300	Optional Spring Kit Heavy Springs (H313100) with retainers (H313200)	22.43	17.94
	H313400	Two Stage Kit Includes heavy springs, retainers & 2 stage weights	73.59	55.19
18	H334800	Screw, stall speed adjusting	1.23	0.98
19	H306100	Oil Fill Plug	2.47	1.98
20	H315100	Extended Starter Nut Fits extended hub clutches	14.03	10.52
20	H703600	Extended Starter Nut with step Fits standard DXL clutches	22.82	17.12
20	H315200	Extended Starter Nut Fits extended hub clutches (rotary valve)	17.55	13.16
20	H315300	Extended Starter Nut Fits extended hub clutches (DINO engine)	17.55	13.16
21	H303900	Cover Screw	1.08	0.86
22	H309200	Cover Nut	0.74	0.59
23	H312900	Hub Screw	1.12	0.90
24	H309300	Woodruff Key	2.38	1.90
	H302900	Nut Ring Replaces cover nuts for quick removal	16.51	13.21

Horstman DXL Clutch Rebuild Kits

Part #	Description	List	Sell
H310200	Rebuild Kit -- Fits 3 Disc 4 Spring Clutch	174.31	130.73
H310300	Rebuild Kit -- Fits 3 Disc 6 Spring Clutch	177.72	133.29
H310400	Rebuild Kit -- Fits 2 Disc 4 Spring Clutch	111.56	83.67

Clutch Tools | Blueprinted Clutch Springs

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

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Rieken's Racing (319)373-2018 365 7th Ave., Marion, IA 52302