Jeep JK TR4050 Transmission Swap Kit 2012-17

Jeep JK TR4050 Transmission Swap Kit 2012-17


Ultimate Tremec TR4050 Jeep manual transmission swap.  This is the permanent NGS370 replacement.


Jeep JK TR4050:

The Jeep JK TR4050 install package is here! Looking to upgrade that sloppy shifting NSG370 problem prone manual transmission?  Quick Draw Brand has the solution.  In partnership with Silver Sport Transmissions we have released a direct bolt in Jeep JK TR4050 5 speed transmission swap kit, the overbuilt NSG370 upgrade.

Why you should buy this package:

No longer will you have to worry about the stock NSG370 problem.  The Tremec TR4050 is a 5 speed heavy duty truck transmission that shifts like a car.  Smooth, short, and firm shifting. Shifts without hesitation of gear selection.  This JK transmission swap works for both the off-road community and custom builds for street use.

With a torque rating of 425 LB-FT (based on a 15,000 GVWR), 6.16 first gear, all gears synchronized, and only 19.5″ long – the TR4050 Jeep kit is a direct bolt in to the model year 2012 through 2017 JK Jeep and is the NSG370 replacement.

Reason to replace the problematic NSG370:

For years, folks have looked for a solution to the Jeep JK NSG370 problem after they start upgrading the Jeep with larger tires and heavier axles.  Because of the NSG370 problem / issues such as broken bell housings, shifters popping out of gear, gears coming apart, and inconsistent shifts a lot of owners actually broke down and bought automatics.  The TR4050 Jeep kit will solve this headache.  For the off road community and street crowd, you can now rock crawl or black top crawl knowing you will get to your destination.

How hard is the install:

The factory transfer case, drive shafts, cross member, exhaust, and slave cylinder all stay in their factory location.  Exhaust cross-over tube will require a hammered dimple directly under the transmission for clearance.  This kit even uses the factory clutch kit.  For direct installation, this kit requires a 1″ body lift.  Plan on 8 hours from removal of the NSG370 to final bolt tightening.  If you are interested in a TR4050 Jeep kit for an automatic swap, future kits are forthcoming.

What comes with this kit:

  • Brand New Tremec TR4050 5 speed, warrantied by Tremec.
  • Brand new bulletproof Quick draw Brand 3.6 bell housing.
  • Clutch Fork
  • Pivot ball
  • All necessary bolts to attach bell housing to engine and transmission
  • Pilot bearing
  • Clutch release bearing
  • Shifter relocation bracket, lever, and ball
  • Transmission cross member bracket.

Installation option:

For those who would like to have the TR4050 Jeep kit professionally installed, a large network of installation and dealer shops are available below. For a flat rate* of $500, by appointment, will install the new parts provided in the kit.  If your JK Jeep needs a new clutch, flywheel, driveshaft, exhaust, etc. these items are not included in the price of the kit or install. It will be an additional cost to be negotiated with the install shop.  The NSG370 replacement is a direct transmission swap, but some pieces are wear items and will need factored into the total cost if deciding on a shop install.



  • Shipping is flat rate to the nearest Terminal or business address.
  • Customer can ship directly to residence, but there will be an additional fee to customer.
  • The states of California, Alaska, and Hawaii will have to pay additional freight regardless of delivery location.


Current participating shops:


RGhauling LLC
(205) 296 6443  Chuck
1603 Edward Street Northeast
Hanceville, AL  35077


Murphys Diesel & Auto Repair
(991) 822-0758  Jeff
20577 South Street
Tehachapi CA.  93561


Well Sorted Automotive
(719) 257 3296  Doug
331 Gregg DR.
Buena Vista, CO  81211

North Carolina

Piedmont Performance Diesel & Off-road
(336) 954 1516  Morgan
7177 Brown Summit Rd
Browns Summit, NC 27214


Quick Draw Brand
(513)446-9654  Chad
7546 Morrow Woodville Rd.
Pleasant Plain, OH 45162


Jeff Daniels Jeep
(215) 256-8090   Shawn
495 Indian Creek Rd,
Harleysville, PA 19438
Precision Power Wagon
(814) 490 8501  Daniel Mininger
5300 S. Creek Rd
Girard, PA  16417


Silver Sport Transmission
(865) 609-8187  Jeff
2250 Stock Creek Blvd
Rockford, TN 37853


Old Iron Restoration and Fabrication
(432) 889 6460  John
6601 E County Rd 10
 Midland, TX 79706


Blacksmith Fork Off Road
(435) 760 7138 Tim Ryan
Logan, UT  84321


Joneys’s INC  Joel Jones
5015 NW 199th
Ridgefield, WA  98642










Additional information

Weight350 lbs
Dimensions48 × 40 × 28 in


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