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I am confused about these GM D52 two piston replacement calipers. I realize
neither the Wilwood nor the SSBC calipers would be a huge improvement with
the 11" discs. The stock single piston D52 has a 2 5/16" piston for a 6.77 sq."
area. The Wilwood d52 has two 2" pistons for a 6.28 sq." area. The SSBC
A185 has two 43mm or 1.69291" pistons for a 4.50 sq." area. Both the after
market 2 piston calipers are smaller in total area than the GM D52 yet Bob
suggests the smaller piston area SSBC is best assuming you use the stock
master cylinder. Why is this?
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