Originally posted by Massive Lee
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"The caliper pictured is the one with the bigger 1.75" pistons (requires a 25.4mm MC if you want a short brake pedal) and I recommend that if owner opts to keep the stock 21mm MC, then to go with smaller 1.38" pistons."
Finally, I have an 84 318i with a stock MC, what's the PN for a 25.4mm MC and does it also drop right in or does it require modifications to fit ?
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