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Brake Piston Seals?

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FlubbaBubba
Borekit Bruiser



Joined: 31 Dec 2014
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PostPosted: 16:55 - 11 Nov 2015    Post subject: Brake Piston Seals? Reply with quote
The rear brake caliper is pissing fluid everywere an i need new seals as i cant find a piston and seal kit for the bike.

Would it be ok using 34mm ID piston seals on a 35mm OD piston?

Any help would be much appreciated, thanks.
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Robby
Dirty Old Man



Joined: 16 May 2002
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PostPosted: 17:01 - 11 Nov 2015    Post subject: Reply with quote
I wouldn't, and I'm usually quite risk tolerant with my brakes.

If you say which bike, someone will probably embarrass you by very quickly finding what you're looking for.
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FlubbaBubba
Borekit Bruiser



Joined: 31 Dec 2014
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PostPosted: 19:21 - 11 Nov 2015    Post subject: Reply with quote
Robby wrote:
I wouldn't, and I'm usually quite risk tolerant with my brakes.

If you say which bike, someone will probably embarrass you by very quickly finding what you're looking for.


Its a 2005 aprilia mx 125 and i have spent about 2 hours in total looking for a piston and seal kit an i cant seem to find any for it so good luck.
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lukamon
World Chat Champion



Joined: 18 May 2007
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PostPosted: 20:11 - 11 Nov 2015    Post subject: Reply with quote
https://www.ultimateparts.net/aprilia/a.php?n=AP8133727-Brake-caliper-rev.-kit-Rear-brake-caliper-Aprilia-MX-125-SuperMotard-2004,2005,2006-Aprilia-Parts-and-Spares-Genuine-OEM&i=340763

£10?
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FlubbaBubba
Borekit Bruiser



Joined: 31 Dec 2014
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PostPosted: 21:43 - 11 Nov 2015    Post subject: Reply with quote
lukamon wrote:
https://www.ultimateparts.net/aprilia/a.php?n=AP8133727-Brake-caliper-rev.-kit-Rear-brake-caliper-Aprilia-MX-125-SuperMotard-2004,2005,2006-Aprilia-Parts-and-Spares-Genuine-OEM&i=340763

£10?


I found them earlier but if i put new seals on a worn piston wont they just leak as there made to fit a new piston?
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Rogerborg
nimbA



Joined: 26 Oct 2010
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PostPosted: 22:47 - 11 Nov 2015    Post subject: Reply with quote
Pistons don't wear unless they're badly corroded. Clean them up without removing any material, clean out the grooves in the pots, fit standard sized seals and you should be good.
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Tdibs
Traffic Copper



Joined: 16 Jan 2015
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PostPosted: 00:27 - 12 Nov 2015    Post subject: Reply with quote
FlubbaBubba wrote:
lukamon wrote:
https://www.ultimateparts.net/aprilia/a.php?n=AP8133727-Brake-caliper-rev.-kit-Rear-brake-caliper-Aprilia-MX-125-SuperMotard-2004,2005,2006-Aprilia-Parts-and-Spares-Genuine-OEM&i=340763

£10?


I found them earlier but if i put new seals on a worn piston wont they just leak as there made to fit a new piston?


If the wear is really bad then you are correct, but most likely you will be able to polish them back up flush.
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