Shimano XT M8120 caliper availability

[James_C]

Hello,

I've suffered from the infamous cracked piston issue. Looking for a new caliper as shimano don't supply parts and I'm not sure about using the aftermarket ones on a brake system. I can't find one for sale anywhere, they are all out of stock

Does anyone know of somewhere that has one for sale - or perhaps a new spare they'd sell?

I can't believe they make pistons out of such a brittle material, madness.

thanks

 

[RustyMTB]

Pedal Power say they have them in stock, unless you've already checked in with them.

Shimano Br-M8120 Xt 4-Piston Calliper, Post Mount, Without Adapters, Front Or Rear - Disc Brakes - Brakes - Components | Pedal Power, Scotland’s Bike Shop

www.pedalpower.org.uk

Very hard to get pistons for Shimano brakes separately otherwise.

 

[James_C]

I hadn’t thanks

£120 though!!!!

 

[Pyr0]

Cheaper to buy an XTR one lol

 

[RustyMTB]

I hadn’t thanks

£120 though!!!!

If you can find tech specs, it may pay to buy some cheapy Deore caliper & rob the pistons if they're the same size & swap them over.

 

[deksawyer]

Out of interest, how did you know there was a crack in the piston - any form of noise etc?

 

[James_C]

Out of interest, how did you know there was a crack in the piston - any form of noise etc?

well, the brakes werent quite as good as they once were. I had a few problems stopping. I decided to clean the pistons. This one came out fine, but wouldnt go back in all the way, I mucked about for a while with it but it refused. I decided to take the caliper apart in the hope of saving the pistons rather then forcing it, and it came out in 2 pieces! The lower edge inside the caliper had broken off. I hadn't really forced it or anything so I'm a little miffed. Maybe this was the root cause of the lower braking force, the fact it had already broken/seized.

 

[steve_sordy]

Bike-discount - GB have them at £60.17m+ £17.27 delivery
Amazon at £118.15 free del.

Well, they say they have them.

 

[James_C]

Thanks went for Amazon lever and caliper for £132. Mainly because next day delivery and the weather is good so dont want to miss much riding

 

[steve_sordy]

Glad you got sorted. I have a spare caliper left from a previous bike. I had bought a new caliper to get going and then claimed under warranty for the one that had failed. I was thinking of selling it, but my current bike has the same brakes and now I know they are hard to get and/or expensive (thanks for that), I will hang onto the spare!