392 Xtreme Recon

[Cali392]

Hello everyone!

I recently got a 392 and waiting for it to arrive. The one I got does not come with the XR package. Is it possible to add XR at the dealership or it is not an option unless ordered with the car ?

 

[byhumba]

Welcome!

If you want it to be XR, then you need to order it from factory. You can ask the dealer (or a 4x4 shop) to put 456 gears and 35 inch tires, but it will not be an XR.

 

[YukonCornelius]

Welcome @Cali392 ! And congrats!
And as @byhumba stated, the gearing is the primary reason to get it from factory

 

[Cali392]

Thank you guys. Do I need to rehear if I install 35’s on the 392? Appreciate your help guys.

 

[YukonCornelius]

Loads of folks went 35’s and even 37’s on 3.73 gearing. Since factories are 33’s going up one size (2”) won’t be much of a difference other than a barely noticeable decrease in acceleration off the line. However, your speedo will be off a few at 65 mph. A Tazer Mini can correct that for you, even adjust the shift points to just about correct the acceleration

 

[Cali392]

Loads of folks went 35’s and even 37’s on 3.73 gearing. Since factories are 33’s going up one size (2”) won’t be much of a difference other than a barely noticeable decrease in acceleration off the line. However, your speedo will be off a few at 65 mph. A Tazer Mini can correct that for you, even adjust the shift points to just about correct the acceleration

Thanks for the helpful info. I’m kinda hesitant cause I’m still new and I don’t wanna mess with it and end up at the shop or dealer every other day lol

 

[Smess]

Thank you guys. Do I need to rehear if I install 35’s on the 392? Appreciate your help guys.

NO NO NO, the 35 is actually doing quite the opposite, it is what should have been matched up with the 3.73 to begin with.

4.56 is too much gear, to stay consistent with what was on the non recon they should have done a 4.11-4.12 to be exact. they wanted to clean the Broncos clock so they did a 4.56 which will smoke the tires even more than the ridiculous 470 to 3.73 love affair already does, lower the 0-60 down to 4.0 so a Mustang or Camaro is sure to look very foolish when the drivers girls laughs at him and says she thinks his pride and joy just got its feelings hurt by a Jeep and a Jeep with pretty big tires to add insult to injury.

Now add a pedal commander and a taser and force 2wd and you can start adding vettes to the list

 

[hardhat]

NO NO NO, the 35 is actually doing quite the opposite, it is what should have been matched up with the 3.73 to begin with.

4.56 is too much gear, to stay consistent with what was on the non recon they should have done a 4.11-4.12 to be exact. they wanted to clean the Broncos clock so they did a 4.56 which will smoke the tires even more than the ridiculous 470 to 3.73 love affair already does, lower the 0-60 down to 4.0 so a Mustang or Camaro is sure to look very foolish when the drivers girls laughs at him and says she thinks his pride and joy just got its feelings hurt by a Jeep and a Jeep with pretty big tires to add insult to injury.

Now add a pedal commander and a taser and force 2wd and you can start adding vettes to the list

I like the 4.56 in the XR. It is a little too much gear, and I think would be better with 37's but I think 3.73 would not be enough gear for me with 35s. I think there would be downshifting on lots of hills and would lose some grunt in 8th gear. The 1/2 second gain 0-60 is great and the on road performance is so cool...

I like being able to climb hills in 8th gear without needing to downshift. Fuel economy penalty is not bad. I'm averaging 13.3 mpg over first 700 miles compared to 15 in my 2013 JKUR with 4.56's on 37s.

 

[YukonCornelius]

Agree with the above - for 35’s you’re at a great setup with the 3.73. I wouldn’t consider a regear unless you want to go 37 or above, if that 37 is heavy. Even with just +15-20lbs at each corner, you’d even still be okay with the factory gearing.