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Explorer 88 Inch Rear Axle

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While you're perusing the junkyard for that perfect 9-inch, keep your eyes peeled for an Explorer 8.8-inch rear axle. More specifically you are looking for the rear-disc backing plate and brakes, as they will bolt directly up to the big-bearing 9-inch. If you are running the 5-on-4.5 pattern, the 8.8-inch rotors will work just fine, but if you plan to run the bigger 5-on-5.5, you will need to source a custom set of rotors from the aftermarket industry. However, it is still one of the cheapest and easiest disc-brake conversions you may ever do.

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