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Jiggadog, I Love it! The X4s is a newer design of the X4 with updates on how it’s built and made. I did not want the solid folding pieces that would block the rear window. Plus you don’t have the seam lines going across the back like the folding design. This makes it look like one solid piece...

Ya I saw that too! Great attention to detail! LOL

I have a 6" lift and can still fit under 7'0" signs.... just barely. :ROFLMAO: and also have 35x12.5x20 KO2's.

600 pages! Holy smokes..... been a long journey!

Ended up changing the front diff fluid and was able to use the spicer 8.8" diff cover and lublocker gasket. (With a 6" lift) I'm so glad I did this as the fluid appeared to be a tanish gray color (only 6k mi.) and was under filled. Not sure if water made its way in somehow or what, but the...

Ended up changing the front diff fluid and was able to use the spicer 8.8" diff cover and lublocker gasket. (With a 6" lift) I'm so glad I did this as the fluid appeared to be a tanish gray color (only 6k mi.) and was under filled. Not sure if water made its way in somehow or what, but the...

Thanks for the info!

So your's has the Torsen too?

Again this is for the front Differential axle. I think all ‘21 f-150’s 4x4’s have this or was it an option?

Looks like it does require it for the front. Below is the info out of the 2021 Service Manual. 2021 F150 XLT FX4 5.0L My truck is a Rocky Ridge with a 6" lif so I have plenty of room to get to the front diff compared to normal trucks.

I know on the rear diff, with electronic locking, friction modified is not required but what about the front? Is it required in the front with the 75w85 hypoid gear oil?

Yup the straight cut gears in the trans aux pump is what’s causing the whine. I notice it more when the trans is at operating temp and at low speeds.

I know for non-lifted trucks there is little to no room to remove the front diff cover but on lifted trucks there is plenty of room. My question is on the 2021 F-150's, is the front diff a regular 8.8"? I was going to get a spicer 8.8" rear cover and see if it would work up front. Dana F150/...

I’m not being the gueina pig this time. I had to replace the LED module. LOL

Here is what the bushwhacker look like on mine.

I’ve always been a Mobil One guy for decades but tried the Valvoline Extended Performance full synthetic 5w30 and couldn’t believe how much quieter the motor became. A few times I thought maybe the auto start/stop was enabled. I still use the Motorcraft filter and change every 5k miles, but I am...

Yup my truck had the dreaded lug/drone sound when cylinder deactivation kicked on. (I have aftermarket exhaust too) I ended up getting a tuner and tune from Livernois Motorsports and they can disable cylinder deactivation and the skip shift options in the trans. The trans tune they incorporate...

No I didn't take any pics with the cover off. However, I did siphon out as much trans fluid as I could before I took the plastic pan off, didn't get the transmission shower. LOL I do have a pic of the old pan...

Had fun working on my truck this weekend. I ended up getting a PPE transmission pan for Christmas along with a Ford Performance diff cover for my 2021 F150 5.0L Rocky Ridge K2. I used a LubeLocker gasket with the diff cover, very simple install. One detail though, if you use this or the Spicer...

I just finished installing a Ford Performance rear diff cover and got rid of the plastic transmission pan for a PPE aluminum one. Also put in a new transmission filter since the pan was off. 2021 5.0L F150 Rocky Ridge K2