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Jeep Wrangler TJ Regear Chart (1997-2006)
Factory transmissions, transfer cases and axle ratios for the Jeep Wrangler TJ — with the two tables every regear decision runs on: cruise RPM at 70 mph and crawl ratio, for every ratio you can actually buy. All data verified against manufacturer specs (sources at the bottom of the page).
Factory presets
| Trim / preset | Transmission | Transfer case | Axle | Factory tire | Crawl | RPM @ 70 |
|---|---|---|---|---|---|---|
| SE / Sport (3.07, Dana 35) | AX-15 5-speed manual (1997-1999) | NP231 Command-Trac | 3.07 | 225/75R15 (28.3 in) | 32.0:1 | 2,016 |
| Sport with Dana 44 (3.73) | NV3550 5-speed manual (2000-2004) | NP231 Command-Trac | 3.73 | 30x9.50R15 (29.5 in) | 40.7:1 | 2,321 |
| Rubicon (4.10) | NV3550 5-speed manual (2000-2004) | NV241OR Rock-Trac (Rubicon 2003-2006) | 4.10 | LT245/75R16 (30.5 in) | 65.8:1 | 2,467 |
Crawl and RPM computed from the factory ratios listed — load any preset into My Garage and the calculators use it everywhere.
Cruise RPM at 70 mph — AX-15 5-speed manual (1997-1999), top gear 0.79
| Tire | 3.07 | 3.73 | 4.10 | 4.56 | 4.88 | 5.13 | 5.38 |
|---|---|---|---|---|---|---|---|
| 28 in | 2,038 | 2,476 | 2,722 | 3,027 | 3,240 | 3,406 | 3,572 |
| 30 in | 1,902 | 2,311 | 2,540 | 2,825 | 3,024 | 3,179 | 3,333 |
| 33 in | 1,729 | 2,101 | 2,309 | 2,569 | 2,749 | 2,890 | 3,030 |
| 35 in | 1,630 | 1,981 | 2,177 | 2,422 | 2,592 | 2,725 | 2,857 |
| 37 in | 1,542 | 1,874 | 2,060 | 2,291 | 2,452 | 2,577 | 2,703 |
Crawl ratio — first gear 3.83, by transfer case and axle
| Transfer case | 3.07 | 3.73 | 4.10 | 4.56 | 4.88 | 5.13 | 5.38 |
|---|---|---|---|---|---|---|---|
| NP231 Command-Trac (2.72:1) | 32.0 | 38.9 | 42.7 | 47.5 | 50.8 | 53.4 | 56.0 |
| NV241OR Rock-Trac (Rubicon 2003-2006) (4.00:1) | 47.0 | 57.1 | 62.8 | 69.9 | 74.8 | 78.6 | 82.4 |
Axles under this platform
- Dana 30 (low pinion 97-99, high pinion varies) Carrier break: 3.73 (3.54 & numerically lower use the low carrier; 3.73 & higher use the high carrier). TJ unit is low-pinion (2000+). Fine to 33s locked / 35s open with chromoly shafts; ring gear size, not shafts, is the ceiling.
- Dana 35 Carrier break: 3.31 (3.07-3.31 low carrier; 3.55 & higher high carrier). 7.58-in ring, 27-spline c-clip shafts (TJ/JL M200 variant differs). The classic fuse axle: avoid lockers + 35s. Super 35 kits (30-spline) change the math.
- Dana 30 Carrier break: 3.73 (3.54 & numerically lower use the low carrier; 3.73 & higher use the high carrier). TJ unit is low-pinion (2000+). Fine to 33s locked / 35s open with chromoly shafts; ring gear size, not shafts, is the ceiling.
- Dana 44 Carrier break: 3.92 (3.73 & down use one carrier; 3.92 & up the other — confirmed by Yukon carrier listings). Non-Rubicon TJ rear is 30-spline; Rubicon TJ is 32-spline rear with air/electric locker variants by year. Practical ratios 4.56-5.13 for 35-37s.
TJ Dana 30 is low-pinion after 2000 in most applications; Dana 35 rear is the fuse on 33s+ with a locker. TJ Dana 44 rear (non-Rubicon) is 30-spline, Rubicon Dana 44s are 32-spline rear / 30-spline front inner with lockers.
Deciding? Run your exact combo in the regear comparison, then let the $39 Decision System turn it into a parts list, a budget and a shop-ready build sheet.
Sources
- Aisin AX15 published ratio table
- NV3550 published ratio table (Novak/Jeep references)
- Advance Adapters 32RH/TF999 ratio listing
- Chrysler NSG370 table