Detroit Trutrac for Sport w/ 3.21 ratio
02-07-2016, 05:32 AM
#11
JK Enthusiast
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For future readers; here's a chart since the one in the link about the gearing install is broken.
Stolen from: Jeep Wrangler JK Gear Ratios
Anyone know what going to 4.10 would do to gas mileage? I'm not that concerned about the increased performance. I drive like an old man... and my last car was a souped up AWD R32. I miss that car
02-07-2016, 09:20 AM
#12
JK Super Freak
02-07-2016, 10:48 AM
#13
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When everyone talks gearing, it is assumed that people are going to bigger tires. You are staying stock-ish. As long as you are happy with the performance, install the truetracs and enjoy. (and good choice of traction, by the way. I like those things)
02-07-2016, 11:13 AM
#14
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Yeah no desire here to ever go bigger on my daily driver. I just bought new 32's (stock) so those are going to last a while. If anything I'll have a set of 275/70's - No big deal.
02-07-2016, 07:09 PM
#15
JKs have the "New Gen" D44/30. The 44s all have a thick cut R&P with any gear ratio, whereas an older D44 will have a thin R&P for 3.72 and down and thick cut 3.73 and up, which requires a different carrier that is machined for the correct gear set. The new gen D44 also has an almost D60 size pinion gear. The D44 and D30 both have the same (weak) axle tubes and inner and outer C's. 2012 and newer D30s have the same stub shafts and u-joints as the Rubicon's D44.
02-08-2016, 10:33 AM
#16
If you are happy with the way your JK accelerates, and are not planning on going with larger diameter tires, stick with the 3.21. I have both front and rear Truetracs and they are awesome in snow, ice, dirt and rocks. I have 3.73 on my 2012 though.
The good thing for your budget is that if you are keeping the 3.21 rings you can have one Truetrac installed first, save up some money and have the other one installed later.
I had the rear one installed first with an Artec truss, then a couple of months later had the front one installed again with an Artec truss and new ball joints. I bought everything during sales and kept them until I was ready to have them installed. It was much easier on the bank account and gave me time to research.
The good thing for your budget is that if you are keeping the 3.21 rings you can have one Truetrac installed first, save up some money and have the other one installed later.
I had the rear one installed first with an Artec truss, then a couple of months later had the front one installed again with an Artec truss and new ball joints. I bought everything during sales and kept them until I was ready to have them installed. It was much easier on the bank account and gave me time to research.
02-08-2016, 10:45 AM
#17
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If you are happy with the way your JK accelerates, and are not planning on going with larger diameter tires, stick with the 3.21. I have both front and rear Truetracs and they are awesome in snow, ice, dirt and rocks. I have 3.73 on my 2012 though.
The good thing for your budget is that if you are keeping the 3.21 rings you can have one Truetrac installed first, save up some money and have the other one installed later.
I had the rear one installed first with an Artec truss, then a couple of months later had the front one installed again with an Artec truss and new ball joints. I bought everything during sales and kept them until I was ready to have them installed. It was much easier on the bank account and gave me time to research.
The good thing for your budget is that if you are keeping the 3.21 rings you can have one Truetrac installed first, save up some money and have the other one installed later.
I had the rear one installed first with an Artec truss, then a couple of months later had the front one installed again with an Artec truss and new ball joints. I bought everything during sales and kept them until I was ready to have them installed. It was much easier on the bank account and gave me time to research.
Why did you go with a truss?
02-10-2016, 05:37 AM
#18
02-11-2016, 06:42 AM
#19
Lots of good feedback here. A set of Yukon gears is only a couple hundred bucks, give or take, depending on where you buy them. For the negligible increase in cost vs. the truetracs, you should go ahead and update your gears. Labor will not go up, so it's just the cost of the parts. Even if you stay stock, 4.10 gears won't impact your MPG's negatively and will make the jeep more enjoyable to drive. I have 4.56 gears and truetracs front and rear with 33" tires. It's so much better on the highway and it's an absolute tractor offroad. Best part is with these gears I can technically go all the way up to a 37" tire if I get froggy, and i'm good to go. The tires i'm running now are 275/70R18's, which are 33x11. Stock wheels, no spacers, all good.