The TREMEC Magnum XL 6-speed Transmission is a continuation of the popular Magnum series, which is derived from the OEM TR-6060. This transmission, paired with the tasteful upgrades from Calimer transmissions, is a beast on the street! These are built to order.

Fitment: 2005-2018 Mustang GT, 2015-2020 GT350

What is included?

• A Tremec Magnum XL transmission
• SFI-approved steel bellhousing
• Cross member
• Shifter and shift ball
• Block saver plate & hardware

Calimer Upgrades:

• Professional Tear down & Reassembly
• Bronze shift pads
• Carbon Fiber Synchronizers
• Micro-Polishing internal parts (this reduces friction, increases longevity, and allows for smoother gear engagement.)

Performance Highlights:

• Trans mount
• 700 lb-ft torque capacity
• Choice of two different gear ratio sets (2.66 or 2.97)
• SFI-approved steel bellhousing

What are the differences between a 2.66 or 2.97 Magnum XL?

Both gear options of the Magnum XL feature a 1:1 fourth gear. The most important thing is to pair this transmission with the correct rear end gear. The 2.66 option features a longer first gear and wider gear spacing, while the 2.97 is a shorter first gear and closer gear spacing (good for NA / low boost applications).

Do I need a front plate pump? 

The front plate upgrade that we offer is a modification to the Magnum XL front plate. We modify the plate to accept a PTO driven oil pump. In stock form, under hard acceleration oil is thrown to the rear of the transmission and the input shaft is starved of oil. This pump helps prevent that and is recommended for all racing applications.