5th Gen Tummy Tuck = ground clearance

4rNCMTNs

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I have put some of this detail inside of my build thread but felt it deserved it's own thread.

When starting out on the plan for my build this was something discussed early on, but was done roughly 1 year after the suspension and wheels tires were installed.

I own both a '12 Limited and '19 Off road and all of this work has been done on the '19.

Some might ask, what is a tummy tuck; well if you look under your 4R just behind the front wheels we have the center cross member, exhaust crossover, and transfer case which hang down quite low compared to the rest of the center of the vehicle.

Below is a picture from under the '12 to clearly show it and the corresponding ground clearance. this vehicle does have a BP-51 suspension under it so your vehicle may or may not sit lower.

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So, what does the tummy tuck do, well in simple words it's the single best investment you can make to gain ground clearance. It's less expensive than many lift kits especially when you add in the upper control arm, etc and you will gain more ground clearance than with a lift. With our stock vehicles it's one thing to drive over something with our front wheels but it's another to get to clear that same obstacle with our back tires if it's too large and we high center on it.

The tummy tuck is your answer for this, short of trying something just crazy which we would never get over. The tummy tuck in essence removes the stock center cross member and replaces it with one much higher. The driver side cat also was moved up since it sit's lower than the passenger side. Then the entire exhaust system from the exit of the cat's to the muffler was replaced to raise it up.

Overall I have gained just over 4" of ground clearance from the bottom of the skid plates to the ground compared to what I had prior. I have not had the pleasure to out and use this yet but will this upcoming weekend and will be sure to post some more photos / videos of it in action.



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This entire job was performed by the highly skilled team at BudBuilt here in NC. They will have some exciting news about this in the near future.
 
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I love it! What a fantastic mod

way to go budbuilt. I'm going to keep my eyes peeled for this to become available
 
tummy tuck work in process photos

I forgot these photos in original post. these show you some of the work above the skid plates.

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I remember seeing that in your other thread. Looks great! Definitely interested in it if it becomes available from budbuilt.
 
Love it!! So many mods are either worthless functionally or even make it worse. This looks great to make a flat belly pan with high clearance. Looks like two stacked 1/2" flat bar?
 
Love it!! So many mods are either worthless functionally or even make it worse. This looks great to make a flat belly pan with high clearance. Looks like two stacked 1/2" flat bar?

No doubt, I couldn't say any better than that

It's actually two 3/8" bars stacked. No doubt it's stout.

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This is pretty cool. I definitely noticed the "low hanging fruit" after buying my 5th gen. Seems like a great idea.

Looking forward to seeing more.
 
Very cool mod. I love the way it adds clearance in a "if you know, you know" kinda way. It doesn't change the outward appearance. Was the transfer-case position changed at all? As in, has the driveline angle changed at all? I can see how Toyota would use a cheaper to manufacture but bulkier crossmember, versus a more thoughtfully engineered higher clearance option. That's good work!
 
Very cool mod. I love the way it adds clearance in a "if you know, you know" kinda way. It doesn't change the outward appearance. Was the transfer-case position changed at all? As in, has the driveline angle changed at all? I can see how Toyota would use a cheaper to manufacture but bulkier crossmember, versus a more thoughtfully engineered higher clearance option. That's good work!

Exactly for those who look at and see nothing will understand. others will have no idea.

I'm not certain on the amount but yes the transfer case was clocked to make the clearance. so yes the driveline angle has changed a very small amount. Many years ago they did the same to an FJ and it now has over 100k on it so zero issue of any negative impact on the transfer case. I think my transfer case will be for sale soon and when it comes out it will only have a 14k miles on it. :jump:

As for the engineering behind the mod, it is very thoughtfully designed and the execution beyond what I was expecting. For sure the stock solution was less expensive and for the masses works just fine. I will let Bud and Rob speak for what they are doing but I'm sure soon I will not be the only one or one of the very few who have a tummy tuck on a 5th gen.

For those more in the overlanding crowd this mod will be even better than a good lift and provide much more benefit.
 
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Looks like it might require a high-tuck exhaust as well? Or is that a separate project?

Yes the high-tuck exhaust was all part of this project. If the exhaust from driver side cat to Y pipe were not modified it would have been impossible to get the truly flat bottom. I'm not positive, but think it will all be part of a single kit very soon.
 
Aggressive, but very bad ass. What does this leave as your next low point? Gas tank I assume?

correct here are my measurements:

Engine / oil pan - 12.5"
transfer case - 17"
gas tank and back to center diff - 14.75" (no change here)

of course the large change is in middle, now just pick correct line and should be able to go over a lot of things without issue.
 

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