TREMEC Magnum XL Ford Kit Close 0.63 6th - TUKT19778
2019-UP MUSTANG GT KIT - CLOSE RATIO 2.66, 1.78, 1.30, 1.00, 0.80, 0.63, 2.90R
Part # TUKT 19778
Out of Stock
Transmission - Manual - TREMEC T56 Magnum XL - 6-Speed - 1 1/8 in 26 Spline - 2019 & up Mustang GT - 2.66 First Gear, .63 OD
TREMEC Magnum XL Ford Kit Close Ratio 6-Speed (TUKT19778) – 2019+ Mustang GT COMING JULY 2026
Upgrade your drivetrain with the TREMEC Magnum XL Ford Kit Close Ratio 6-Speed (TUKT19778)—engineered specifically for 2019+ Mustang GT owners who demand precision, strength, and modern functionality.
Built as an aftermarket evolution of the legendary TR-6060 platform, the Magnum XL delivers exceptional durability with a 700 lb-ft torque rating and high-RPM capability up to 7,800 shifts, making it ideal for both street and track performance. Its close-ratio gear set (2.66, 1.78, 1.30, 1.00, 0.80, 0.63) ensures tighter power delivery, quicker acceleration, and optimized performance across every gear.
Designed to replace the factory MT-82, this Mustang GT transmission upgrade features a gear position sensor, allowing you to retain factory rev-matching and backup camera functionality—a critical advantage for modern performance builds. The included TREMEC aluminum bellhousing eliminates the need for third-party housings, simplifying installation and improving reliability.
The Magnum XL’s extended tail housing and direct-mount shifter eliminate the drawbacks of factory semi-remote shifters, delivering crisp, precise, and lightning-fast gear changes while maintaining reduced NVH for daily drivability.
Key Features
- Fits 2019–2023 Ford Mustang GT (S550, 5.0 Coyote)
- Close-ratio 6-speed transmission for maximum performance
- 700 lb-ft torque capacity & 7,800 RPM shift capability
- Integrated gear position sensor for rev-match retention
- Direct-mount shifter for superior shift feel
- Includes aluminum bellhousing, crossmember, and mount
- Designed as a complete MT-82 replacement solution
Specifications
- Gear Ratios: 2.66, 1.78, 1.30, 1.00, 0.80, 0.63
- Torque Rating: 700 lb-ft
- Input Shaft: 26 Spline
- Output Shaft: 31 Spline
- Shifter Location: 34.9" from front of bellhousing
- Mount Position: 28.1"
- Electronic Speedometer Output
Important Notes
Installation requires a 26-spline clutch upgrade and a one-piece driveshaft. ECU calibration updates via HP Tuners are required to properly configure gear position data.
Whether you're building a street machine or a track-ready Mustang, the TREMEC Magnum XL 6-speed is the ultimate performance transmission upgrade for Ford Coyote-powered vehicles, delivering unmatched strength, precision, and driving engagement.
This Product Ships Freight
When you add this product to your cart and go to purchase, you'll get this message: "Your order will be shipped via pallet. An estimate will be provided to you and added to your bill once approved.". If you continue through the purchase process, an order will be sent to SST, but your payment will not be collected. Upon receiving your order, SST will email you an estimate to ship to your address. At that point, you can decide to finalize the purchase, or you can choose to decline.| Item# | Status | Description | Qty. | Your Price | |
|---|---|---|---|---|---|
| TUKT 19778 | Out of Stock |
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PLACE BACKORDER
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Other Options Available:
| Part Number | Style | Product | 1st | 2nd | 3rd | 4th | 5th | 6th | REV |
| TUET11430 | Ford | Transmission Only | 2.66 | 1.78 | 1.30 | 1.00 | 0.74 | 0.50 | 2.90 |
| TUKT12019 | Ford | '05-18 Mustang Kit | 2.66 | 1.78 | 1.30 | 1.00 | 0.74 | 0.50 | 2.90 |
| TUET11940 | Ford | Transmission Only | 2.97 | 2.10 | 1.46 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUKT12021 | Ford | '05-18 Mustang Kit | 2.97 | 2.10 | 1.46 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUET16886 | Ford | Transmission Only | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUKT16901 | Ford | '05-18 Mustang Kit | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUET19778 | Ford | '19-Up Mustang Kit | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUET18131 | GM | Transmission Only | 2.66 | 1.78 | 1.30 | 1.00 | 0.80 | 0.63 | 2.90 |
| TUET18132 | GM | Transmission Only | 2.97 | 2.10 | 1.46 | 1.00 | 0.80 | 0.63 | 2.90 |
Specifications
| Make |
|---|
| Ford |
| Bellhousing Included |
| Yes |
| Number of Gears |
| 6 |
| 1st Gear Ratio |
| 2.66 |
| 2nd Gear Ratio |
| 1.78 |
| 3rd Gear Ratio |
| 1.30 |
| 4th Gear Ratio |
| 1.00 |
| 5th Gear Ratio |
| 0.80 |
| 6th Gear Ratio |
| 0.63 |
Product Details
The TREMEC Magnum XL Ford Kit (TUKT19778) is a purpose-built 6-speed manual transmission solution designed specifically for 2019–2023 Mustang GT (S550) applications. Engineered for high-performance driving, this kit delivers the strength, precision, and modern integration required for today’s advanced muscle cars.
Featuring a close-ratio gear set, the Magnum XL keeps your Mustang’s 5.0L Coyote engine in its optimal power band, improving acceleration and overall drivability. The extended tail housing positions the shifter further rearward, aligning perfectly with the factory console location while eliminating the drawbacks of remote-mounted shifters.
This kit includes a factory-integrated gear position sensor, allowing retention of OEM features like rev matching and backup camera functionality. This makes it one of the most seamless and complete MT-82 replacement options available for modern Mustangs.
What’s Included
- TREMEC Magnum XL 6-speed transmission (close ratio)
- Integrated gear position sensor
- TREMEC aluminum bellhousing
Performance Highlights
- Rated for up to 700 lb-ft of torque
- Supports high-RPM shifting up to 7,800 RPM
- Direct-mount shifter for improved accuracy and feel
- Reduced NVH compared to typical aftermarket setups
- Optimized for both street and track use
Fitment
Designed for 2019–up Ford Mustang GT (5.0L Coyote, S550 platform). Ideal for customers looking to replace the factory MT-82 transmission with a stronger, more performance-oriented solution.
Installation Requirements
- 26-spline clutch upgrade required
- One-piece driveshaft conversion required
- ECU calibration update needed for gear position sensor functionality
- HP Tuners VCM Suite recommended for configuration
Warranty
- TREMEC 1-Year Limited Warranty
The Magnum XL is the go-to choice for Mustang enthusiasts seeking a durable, high-performance manual transmission that integrates seamlessly with modern vehicle electronics while delivering race-proven reliability.
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