Piston sizing
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Senior Member
Joined: Oct 2013
Posts: 349
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From: Hamilton ON Canada
Piston sizing
What diameter are the brake caliper pistons on the front and rear of a series 3? trying to figure out brake system and want to avoid pulling the caliper if i can
Veteran Member
Joined: Apr 2012
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From: New York City
each piston on the front is 48mm and the rears pistons are 43mm.