im in need of a master install kit for my truck, i already bought the 4.10 motive gears and my eaton posi, i checked randys ring and pinion, just wasnt sure which kit to buy, i saw one for a 8.5" rear end 10-bolt, then i saw another one with the same description but it mentioned something about an eaton posi, so can anybody guide me where and which kit to get for a master install kit for the rear end on my truck? its a 06 rcsb v8. thx fellas

 

Just give Randy's a call, they will point you in the right direction. They have the best all around install kits out there that I have found. They are one of the few that use Timken(OEM) bearings in thier kits.

 

the eaton has a different bearing that fits the 00s the 99s have a different outer race if im not mistaken.

I got my kit from a local gear shop. something like $100 for everything even the pinion shims. or carrier shims. which ever didnt come in the kit.

 

Ratech