2 of 3 people found the following review helpful
I smell marketing bs...,
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This review is from: Jagwire V-Brake Type Brake Blocks With Anti Squeal Compound (Sports)
Even with the so-called anti-squeal compound these made more of a squeal than the stock brake blocks. And they're also very thin, so don't expect them to last very long. No idea why these are so popular - I sense that for most of the people that they did help with squealing it was probably more to do with the repositioning the brake blocks during installation than the brakes themselves.