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JPC Racing

JPC- 2018-2021 Mustang GT Tremec Magnum XL Complete Conversion Kit

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$425.00 (Fixed Shipping Cost)

 **** If you have a Commercial Shipping Address you can use, Please call for Sale to Lower Shipping Total, Excludes Any Sales**** Expedited Shipping is not available on kit due to multiple options and manufactures.*****


*** 2015-up Models will require you to clearance the tunnel some for the reverse lock out ***


Known unofficially as the Magnum XL, this new 6-speed model will feature a direct-shift extension housing designed to eliminate the notoriously unpopular semi-remote factory shifter. Additionally, a slip yoke style interface will also make it easy to ditch the equally unpopular 2-piece driveshaft in favor of a more robust 1-piece arrangement.

As with all Magnum 6-speeds, TREMEC aims to put a 700 lb-ft. seal of approval on the new Mustang units, and will eventually offer them with both Magnum ratio packages to suit a variety of street and performance driving scenarios.

Great solution for 2011+ Ford Mustangs with fragile factory Getrag MT-82 transmissions! Also replacing the weak TR3650 and the shifting issue prone TR6060.

Two different ratio options are available:





















Transmission will work not with OEM slave cylinder (One is included in the package) 

Speed Calibration Box which is added into the cost of the package 

Included in kit:

  • Magnum T-56 with your choice of gear set
  • Quicktime SFI bellhousing
  • Crossmember & Mount
  • Shifter Assembly
  • PST Aluminum Driveshaft w/ Spicer Yoke
  • New Slave Cylinder 
  • New Rear Pinion Yoke
  • Speedo Conversion and Reverse Lockout Pigtail


700lb-ft Torque Capacity 2.97 or 2.66 1st Gear 26 T Input Shaft Spline 31 T Output Shaft Spline



Which clutch is right for me?

We offer several different clutches to meet everyone's needs. If you're unsure of which to go with here's a little breakdown.


Spec Stage 2- Average Stock to Bolt on car.

Spec Stage 2+ Bolt On car making under 500rwhp.

Spec Stage 3- Small Power Adder Kits under 600rwhp

Spec Stage 4- Power Adder cars making under 650rwhp

Spec Stage 5- Power Adder cars making under 800rwhp (Stiff Pedal Feel and Engagment)

Spec Stage 3+ Power Adder cars making less then 750rwhp (Better Clutch Engagment and less Pedal Effort)

Mcleod RST - Stock to Power Adder cars making under 750rwhp

Mcleod RXT - Cars making 600rwhp-1000rwhp (Same clutch we run in our JPC 2011 GT)


Which Flywheel is right for me?

We've got several flywheel options available for our customers-

Billet Steel - Budget Flywheel great for a street car.

Lightened Steel - Best for a street / Strip car

Aluminum - Great for anyone looking to get the most out of their car.



**** If you have a Commercial Shipping Address you can use, Please call for Sale to Lower Shipping Total ****

**** 3-4 Week Build Time Approximately ****