These are available why look for a substitute?
if it is to save a couple of bucks, that seems like a false economy for a mission critical function like braking
https://www.amazon.com/Shimano-Deore...176&th=1&psc=1
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)