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Originally Posted by xj_man_646
Stock for stock there is no question. Who doesn't upgrade to 35 spline outers at least on a KP 60?
The 05+ F250/350 axle will accept OEM 1550 shafts available for the F550 I believe. The large spread on the ball joints increases the strength, and they do not have the weak knuckles that the old Ford axles have. I believe they also have larger and thicker axle tubes.
The real fun begins once you start spending money. RCV makes a 'big bell' shaft that eliminates the lock out / drive flange component and engages the entire hub of the UBH...can't recall if this requires aftermarket knuckles or not.
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I just looked up those big bell rcvs. Crazy what they have out there now. Far cry from when 35 spline chromoly shafts were the toughest thing out there.
I dont really buy into the trend of everything having to have 47 spline shaft dana 80s. For some people absolutely, but its a select few. All these jks rolling round on dana 80s and 40s. Some say you cant over build I guess, but I think you can definitely over spend. This even extends to local trail report facebook pages. Trails people have been running for years in stock vehicles, probably 70% of people on those pages will claim you need full armor and probably 35 inch ties. Scraping a skid plate means you need more lift and bigger tires. Rant over.