Tarheel Trailblazers Message Board - WTB broken caliper or Ceramic piston

05/28/23 at 1:55am

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WTB broken caliper or Ceramic piston (Read 471 times)

rotorbaru Coaster Bike Offline Work Ride Tarheel Trailblazers Posts: 213 Location: Charlotte SW Joined: 10/12/09	WTB broken caliper or Ceramic piston 10/25/21 at 11:52am	Print Post
	I am looking for the larger 17.2mm ceramic piston for my SLX M7120 caliper. I cracked one of the larger pistons and want to rebuild the caliper. If anyone has a M6120 M7120 M8120 or M9120 broken caliper they want to sell or a piston out of it let me know. Thanks Mike


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Spoke Small Cog Offline I love YaBB 1G - SP1! Posts: 311 Joined: 11/12/04	Re: WTB broken caliper or Ceramic piston Reply #1 - 10/25/21 at 4:56pm	Print Post
	Try ebay and amazon. Aluminum replacement pistons can be found on ebay and amazon for XT and XTR brakes. Maybe SLX as well.


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gonzo In The Loop Offline Work Ride Tarheel Trailblazers Posts: 443 Location: plaza/midhood Joined: 07/28/12	Re: WTB broken caliper or Ceramic piston Reply #2 - 10/25/21 at 8:10pm	Print Post
	I've used the cheap ti ones on Amazon to replace ceramics for my grx and xt m785, m8000 and 8120 brakes and they have all held up fine. May be just my luck, but the ceramics seem to be the weak point in the system.

	I have reason to believe that the squirrels are mocking me.
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rotorbaru Coaster Bike Offline Work Ride Tarheel Trailblazers Posts: 213 Location: Charlotte SW Joined: 10/12/09	Re: WTB broken caliper or Ceramic piston Reply #3 - 10/26/21 at 7:44am	Print Post
	Thanks for the tips on finding replacements. The SLX, XT and XT on the Mx120 series brakes are the same as far as I know. I am concerned about using metal pistons that will transmit heat much faster into the fluid compared to ceramic. Under normal riding conditions in CLT probably not an issue but riding in the Mtns during sustained downhill I am concerned.


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Spoke Small Cog Offline I love YaBB 1G - SP1! Posts: 311 Joined: 11/12/04	Re: WTB broken caliper or Ceramic piston Reply #4 - 10/26/21 at 8:58am	Print Post
	rotorbaru wrote on 10/26/21 at 7:44am: Thanks for the tips on finding replacements. The SLX, XT and XT on the Mx120 series brakes are the same as far as I know. I am concerned about using metal pistons that will transmit heat much faster into the fluid compared to ceramic. Under normal riding conditions in CLT probably not an issue but riding in the Mtns during sustained downhill I am concerned. Hasn't been a problem riding the big downhills in Pisgah.


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rotorbaru Coaster Bike Offline Work Ride Tarheel Trailblazers Posts: 213 Location: Charlotte SW Joined: 10/12/09	Re: WTB broken caliper or Ceramic piston Reply #5 - 10/26/21 at 9:32am	Print Post
	Good to know, maybe 1 metal piston is not a big change in heat absorption.


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Spoke Small Cog Offline I love YaBB 1G - SP1! Posts: 311 Joined: 11/12/04	Re: WTB broken caliper or Ceramic piston Reply #6 - 10/26/21 at 11:03am	Print Post
	rotorbaru wrote on 10/26/21 at 9:32am: Good to know, maybe 1 metal piston is not a big change in heat absorption. FYI. I'm using two metal pistons and no heat issues.


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