Slave Cylinder Ducati 851 - Ducati.ms - The Ultimate Ducati Forum
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post #1 of 11 (permalink) Old Aug 18th, 2019, 3:00 pm Thread Starter
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Slave Cylinder Ducati 851

Hi gang!

I need to replace the slave cylinder on my '91 851. It's leaking, and the paint is bubbling, so I want to replace the entire unit. I don't see where the Yoyodyne or Evoluzione units are available anymore for the earlier bikes.

Can anyone recommend a viable replacement that's a complete kit with the case, piston, o-rings, bellows, etc.? The more I research, the more confused I get.

Thanks!
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post #2 of 11 (permalink) Old Aug 18th, 2019, 4:25 pm
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ime the oberon is the cheapest of the good ones.
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know all wanker
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post #3 of 11 (permalink) Old Aug 18th, 2019, 4:34 pm
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The yoyodyne slave should be a easy fit. They have a brass pill included to convert from early to late versions but the unit works on both. The only hang up could be if you have the end mount hydraulic line you will need to change the line but I do not know of a end mount unit made today.
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post #4 of 11 (permalink) Old Aug 18th, 2019, 4:37 pm
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Well I have an idea--since you have a 1991 851 that is broken, -& I am looking for a 1991 851 you should just sell it to me cheap and then it will be my problem lol

1991 Ducati 900ss-Euro, 1991 Ducati 907ie. 1978 Yamaha SR500, 1979 Yamaha RD400 Daytona Special, 1973 Truimph X-75, 1975 Triumph T-160, 1976 Triumph T140, BMW's too many to list
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post #5 of 11 (permalink) Old Aug 18th, 2019, 4:37 pm
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plus your not too far away lol

1991 Ducati 900ss-Euro, 1991 Ducati 907ie. 1978 Yamaha SR500, 1979 Yamaha RD400 Daytona Special, 1973 Truimph X-75, 1975 Triumph T-160, 1976 Triumph T140, BMW's too many to list
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post #6 of 11 (permalink) Old Aug 18th, 2019, 5:10 pm
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I do know where there is a 1990 851 vintage racer if you must...
fresh motor with only dyno time.......
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post #7 of 11 (permalink) Old Aug 19th, 2019, 8:40 am Thread Starter
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Originally Posted by rennsportmotorrad View Post
Well I have an idea--since you have a 1991 851 that is broken, -& I am looking for a 1991 851 you should just sell it to me cheap and then it will be my problem lol
I think I'd have a hard time parting with this one. It's got less than 1,400 miles on it and came out of Malcom Forbes' collection. Yes, THAT Malcom Forbes!

BUT, everything has a price...8)
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post #8 of 11 (permalink) Old Aug 19th, 2019, 8:49 am
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I'm with you bud I would have a hard time parting with it as well, --But then I have a hard time parting with any of my bikes lol--thats why I have over 50 of them right now lol

1991 Ducati 900ss-Euro, 1991 Ducati 907ie. 1978 Yamaha SR500, 1979 Yamaha RD400 Daytona Special, 1973 Truimph X-75, 1975 Triumph T-160, 1976 Triumph T140, BMW's too many to list
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post #9 of 11 (permalink) Old Aug 20th, 2019, 11:10 am Thread Starter
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Originally Posted by rennsportmotorrad View Post
I'm with you bud I would have a hard time parting with it as well, --But then I have a hard time parting with any of my bikes lol--thats why I have over 50 of them right now lol

Make me a crazy offer! It'll save me $200 on the repair!!
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post #10 of 11 (permalink) Old Aug 20th, 2019, 4:34 pm
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Hmmm...
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'01 996R, 851 Adamo/Leoni racebike, '97 900 SS CR, '91 ZX-7R K1 homologation, '89 NSR250 MC18r5k, '01 Derbi GPR50/75,
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