Adding 4A to 401a Tremor

[Abraham5G]

Are there any maintenance differences between trucks with 4Auto and trucks with 4Hi only?

 

[BillfLang]

Of course she traded her 2023 XLT F-150 for the 2025 Tremor. I have a 2022 Bronco Badlands that I love more than the Tremor. My Bronco is all tricked out and replaced the B&O stereo.

I took my Tremor in for Service , Loner was a Badlands Bronco . Didn't like it at all. Sorry ! Each his own is what they say. Enjoy it !!

 

[Bullet_magnet]

As someone who worked on the original development and launch of the Tremor I can confirm the 401A uses the XLT and lower trim series t-case. It does not contain any of the 4A engagements bits. We call this a Hi-lock t-case meaning when engaged it’s an old school mechanical engagement, no clutches. Better for intended usage.

The Lariat and above uses a t-case with an electronic engaged clutch pack so it can do 4A functions as needed when slip is detected. When put in 4H the clutches are simply always engaged electronically. No traditional mechanical engagement.

The 402A uses the Raptor T-case which has both the 4A electronic clutch pack functionality and the 4H Hi-lock mechanical engagement. It’s a really neat piece and have always been frustrated that marketing didn’t say more about that upgrade. When I bought my Tremor the sales person had no idea.

So there are actually 3 transfer cases across the F150 line up. Hope that helps….

Retired a couple years ago so it’s very possible they have changed the line up with the 24 and up.

What is your impression of the standard XLT transfer case that's also found in the 401A?

Coming from a 2017 XLT 302A. I never felt outgunned. I can see the 4A being a bit more convenient when dealing with sudden road conditions or unplowed roads. In fact I ran into such a scenario this week...but ultimately I never found it to be a big deal to just put it in 4H manually.

Are there any performance losses or durability challenges amongst the different transfer cases? Do they all effectively lock the front and rear drive shafts?

I'm of the thought that the 401A can be the best value compared to 302a XLT with black appearance + package. That's what I was directly comparing too and this was only a couple thousand more.

The 402 seemed awesome but I just didn't see it being worth the extra 10-12k for my own personal use case.

 

[Mjschneidy]

What is your impression of the standard XLT transfer case that's also found in the 401A?

Solid and proven

 

[BillfLang]

What is your impression of the standard XLT transfer case that's also found in the 401A?

Coming from a 2017 XLT 302A. I never felt outgunned. I can see the 4A being a bit more convenient when dealing with sudden road conditions or unplowed roads. In fact I ran into such a scenario this week...but ultimately I never found it to be a big deal to just put it in 4H manually.

Are there any performance losses or durability challenges amongst the different transfer cases? Do they all effectively lock the front and rear drive shafts?

I'm of the thought that the 401A can be the best value compared to 302a XLT with black appearance + package. That's what I was directly comparing too and this was only a couple thousand more.

The 402 seemed awesome but I just didn't see it being worth the extra 10-12k for my own personal use case.

Well your getting more than just a transfer case for your 10 or 12 K in the 402A . Apples to Apples . I have had all of the transfer case's in my trucks and I don't have a Clue witch one is better. Never had a problem with any of them.

 

[Spamslurpee]

What is your impression of the standard XLT transfer case that's also found in the 401A?

Coming from a 2017 XLT 302A. I never felt outgunned. I can see the 4A being a bit more convenient when dealing with sudden road conditions or unplowed roads. In fact I ran into such a scenario this week...but ultimately I never found it to be a big deal to just put it in 4H manually.

Are there any performance losses or durability challenges amongst the different transfer cases? Do they all effectively lock the front and rear drive shafts?

I'm of the thought that the 401A can be the best value compared to 302a XLT with black appearance + package. That's what I was directly comparing too and this was only a couple thousand more.

The 402 seemed awesome but I just didn't see it being worth the extra 10-12k for my own personal use case.

From an off road perspective, the only thing the 401a trucks really lack is the Torsen differential and the 4A mode. That's it. The 4A mode is nice to have on wet roads and things, but if you know how to operate 4H manually, I don't think you need it. The Torsen differential is the much bigger deal. That by itself isn't worth the $12,000 and you can add the Torsen differential to your truck for far less than that. However, you are also getting the modular bumper, tailgate step or pro access tailgate, bed utility package, "leather" seats and other options. For 2026 there is now a 402b package that sits between the two and splits the difference on price.

 

[Bullet_magnet]

From an off road perspective, the only thing the 401a trucks really lack is the Torsen differential and the 4A mode. That's it. The 4A mode is nice to have on wet roads and things, but if you know how to operate 4H manually, I don't think you need it. The Torsen differential is the much bigger deal. That by itself isn't worth the $12,000 and you can add the Torsen differential to your truck for far less than that. However, you are also getting the modular bumper, tailgate step or pro access tailgate, bed utility package, "leather" seats and other options. For 2026 there is now a 402b package that sits between the two and splits the difference on price.

From an off road perspective, the only thing the 401a trucks really lack is the Torsen differential and the 4A mode. That's it. The 4A mode is nice to have on wet roads and things, but if you know how to operate 4H manually, I don't think you need it. The Torsen differential is the much bigger deal. That by itself isn't worth the $12,000 and you can add the Torsen differential to your truck for far less than that. However, you are also getting the modular bumper, tailgate step or pro access tailgate, bed utility package, "leather" seats and other options. For 2026 there is now a 402b package that sits between the two and splits the difference on price.

Agree. That 402 is definitely nicer.

The one I'm awaiting delivery of is. 401a w/ the bed utility group and tow package. Stickers for 69500, getting it for 57005 w/ 0% financing. Originally I was after a BAP XLT, but for a little extra getting a Tremor 401 was the move.

Ultimately the 402b was offered in the 2025 model year I may have considered that. At 57k and 0% the 401 Tremor was right in the sweet spot of where I was trying to be.