Dynatrac free spin hubs for fule mileage

[bearskinner]

Has anyone installed the dynatrac free spin 4x4 front hubs? (does anyone else make a kit?) I have heard they will improve fuel mileage 2 mpg and delete the unit bearing problems. I like the idea of having servicable bearings too. thoughts? ideas?

[Lubbockguy1979]

alot of money for a little gain.... it is a nice kit but if i have a unit bearing failure i can go to napa, autozone or ford and get parts locally. if im on the road i dont have as hard of a time to get back on the road. i have had few failures with the unit bearing on my supreduty trucks or for that matter my old chevy ifs trucks. it does look like a nice kit but the price would keep me from getting it

[JSchuricht]

If your hubs and barrings are functioning properly, there is no MPG gain. It dose get red of the unit bearings and uses standard bearings that you can get almost anywhere. Don't recall what the name of the company was but there is at least one besides dynatrac, but I have also heard their not as good of a kit.

[nitrogen]

the only time you see a real mpg gain is on the dodges, where they just unlock at the front diff and all the axle stuff keeps turning. because the fords unlock at the wheel already there is no significant change

[bigcountrysg]

It is cheaper to find a dana 60 at a junkyard and swap it out.

[Newman]

IIRC Ballistic Fab makes a kit also

[jetjock15]

we already have free spin hubs, if they work.... the real advantage is the bearings.... if you have larger then 38" tires then you will go through bearings quick, but the newer trucks are way better then the Dana 50s... my bearings on my 06 are holding strong. My last truck was an 01 on 38s, i had to replace both front bearings every year at... but even then that kit was not cost effective cause i just kept reusing the "lifetime warranty" of the first set of replacment bearings i bought!

[jimmyp]

We installed them on a buddies cummins and it was alot better cause he also replaced the inner shaft with a one piece axle rather than having that goofy two piece axle with the locking collar. He also picked up a couple miles per gallon, but the biggest thing he gained was the added strength of the one piece inner shaft.....
Jim