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Old 03-26-2010, 12:40 AM   #4
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,254
Re: D52 caliper upgrades

While they don't have the 'Bling' of the Wilwood dual piston D52's the factory option JB7/JD7 calipers have 3 5/32" dia pistons. I'm about 90% certain these are based on the D52 caliper castings. My computer is running extremely slow, or I would find some verification tonight. I'll look some more tomorrow. IIRC the standard JB5 and JB6 calipers have 2 15/16" pistons.
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