Nerding out on Brakes shall we? Not another tech deraliment

AnttiH
Profile picture for user AnttiH
Posts
26
Joined
8/20/2024
Location
Tampere FI
AnttiH 6/3/2026 4:35am
6/3/2026 4:35am

So no one has actually done it?

63expert 6/3/2026 1:27pm
6/3/2026 1:27pm
AnttiH wrote:

Did anyone ever remove the phenolic plastic inserts inside the caliper pistons on Hope brakes to see if it would stop the squaling?

63expert wrote:

My GR4s running green pads on 2.3mm rotors don’t squeal. 

noideamtber wrote:
My GR4's with the same setup  on my Test bike does, Tried a few different rotors. They've always squealed - just like the t4v4's did.Got 2...

My GR4's with the same setup  on my Test bike does, Tried a few different rotors. They've always squealed - just like the t4v4's did.
Got 2 friends running a similar setup, GR4's with TRP 2.3 R5's and they squeal. 

More than likely going back to Maven's, My b1's on the ebike are fantastic.

I’m using the Hope rotors

TSchafer
Profile picture for user TSchafer
Posts
73
Joined
11/4/2014
Location
Denver, CO US
TSchafer 1 day ago
1 day ago

On YouTube some dude tested greasing the back of the pads on hopes, which is a terrible idea but seemed to stop the squealing for some time. His thought was it’s coming from the painted pad backs,  causing the pads to move more under braking, which I could see.

I haven’t tried removing the inserts, my T4V4s squealed but my GR4s don’t, both with hope rotors.

1

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