TREMEC Magnum XL 6-Speed Transmission Swap Package | 2011-2023 Mustang GT

Have a commercial shipping address? Give us a call before ordering to lower your shipping cost!

Sale pricing excludes other promotions.

Expedited shipping is not available due to the multiple configuration options and components sourced from different manufacturers.

Important Notes

• 2015-2023 Mustangs: Minor transmission tunnel clearancing is required for reverse lockout clearance.

• NEW! We now offer a 2019+ Rev Match Compatible transmission option, allowing you to retain the factory automatic rev-matching feature found on equipped 2019-2023 Mustang GT models.

• Approximate build time is 3-4 weeks.

Upgrade Your MT-82 With the Legendary TREMEC Magnum XL

The TREMEC Magnum XL is the ultimate manual transmission upgrade for 2011+ Mustang GT owners looking for unmatched strength, reliability, and shifting performance.

Designed with a direct-mount shifter extension housing, the Magnum XL eliminates the vague feel of the factory semi-remote shifter while replacing the factory two-piece driveshaft with a stronger one-piece aluminum driveshaft.

Rated to handle 700 lb-ft of torque, the Magnum XL is the perfect solution for replacing:

• Factory MT-82 transmissions

• TR3650 transmissions

• TR6060 transmissions with common shifting issues

Whether your Mustang is a daily driver, street/strip car, or high-horsepower build, the Magnum XL delivers precise, confidence-inspiring shifts.

Available Gear Ratios

Close Ratio

Wide Ratio

Features

• 700 lb-ft Torque Capacity

• Choice of 2.66 or 2.97 First Gear Ratio

• 26-Spline Input Shaft

• 31-Spline Output Shaft

• Direct-Shift Magnum XL Design

• Improved Shift Feel

• One-Piece Driveshaft Conversion

• Optional 2019+ Rev Match Compatible Configuration

What's Included

• TREMEC Magnum XL Transmission

• Choice of Gear Ratio

• QuickTime SFI Bellhousing

• Crossmember & Transmission Mount

• Shifter Assembly

• PST Aluminum Driveshaft with Spicer Slip Yoke

• New Hydraulic Slave Cylinder

• New Rear Pinion Yoke

• Speedometer Calibration Box

• Reverse Lockout Wiring Pigtail

Note: The Magnum XL does not use the factory OEM slave cylinder. A new compatible slave cylinder is included in every package.

Frequently Asked Questions

Which Clutch Should I Choose?

We offer several clutch options depending on your power level and intended use.

SPEC Stage 2

Ideal for stock and basic bolt-on combinations.

SPEC Stage 2+

Best for naturally aspirated bolt-on cars making under 500 RWHP.

SPEC Stage 3

Recommended for small power-adder combinations producing under 600 RWHP.

SPEC Stage 3+

Excellent choice for boosted applications making up to 750 RWHP. Provides smoother engagement and lighter pedal effort than a Stage 5.

SPEC Stage 4

Recommended for power-adder combinations making up to 650 RWHP.

SPEC Stage 5

Designed for power-adder cars making up to 800 RWHP. Features a stiffer pedal and more aggressive engagement.

McLeod RST

Excellent street clutch for stock through approximately 750 RWHP applications.

McLeod RXT

Our recommended clutch for 600-1,000 RWHP combinations. This is the same clutch used in our shop's JPC/Next Gen Performance 2011 Mustang GT.

Which Flywheel Should I Choose?

Billet Steel

Our most economical option and an excellent choice for daily driven street cars.

Lightened Steel

Our most popular flywheel for street/strip Mustangs, offering an excellent balance of drivability and performance.

Aluminum

The lightest option available, ideal for customers looking for maximum engine response and acceleration.

Shipping Information

• Commercial shipping addresses can significantly reduce freight costs. Please call us before placing your order if you have access to one.

• Sale pricing cannot be combined with other promotions.

• Due to the custom nature of these packages, expedited shipping is unavailable.

• Typical build time is approximately 3-4 weeks.