Front brake rotor size??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

01-16-2015, 08:18 PM

Keith Seymore

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Join Date: May 2009

Location: Motor City

Posts: 9,294

Re: Front brake rotor size???

Quote:

Originally Posted by ellisjay2

There are three different size rotors, I was just wanting to know what size mine were on the 86 2500 longbed, .

I only see one rotor size across all 4wd 20 series (K20903 & JB6/JD6/JB7/JD7; 6600 or 8600 lb GVW) and it's a 12.5x1.28".

Similarly, I only see one rotor used across all 2wd 20 series (C20903 & JB6/JD6/JB7/JD7; 7200 or 8600 lb GVW) and it is also a 12.5x1.28".

K

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