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Old 02-12-2007, 10:35 PM   #3
boxrodz
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Join Date: Feb 2005
Location: Rocky Mountain Front Range
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Re: Which brakes, JD6/JD7?

The rotors on both systems (JB6 & JB7) are the same dimensions. However, the dimensions of the rear drums are different. The JB6 drums are 11.15 x 2.75 whereas the JB7 drums are larger at 13 x 2.5.
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