Anyone know anything about disc brakes?

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atz

Ultegra r8000 series calipers. One piston seems not to be moving. Anything I can do to sort it?

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TotalShanner in reply to @atz

Yeah, you basically hold one piston in while pressing the lever to advance the stuck one and clean it. (Be careful, you don’t want the piston to pop out completely!)
This park took video explains it well

https://m.youtube.com/watch?v=vQXFFgRButo

https://m.pinkbike.com/news/tech-spotlight-brake-caliper-piston-service-assessment-2014.html

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