Key Features
- 6061-T6 aluminum tube with 0.125" wall thickness for optimal strength-to-weight ratio
- 3.5" diameter one-piece design eliminates factory two-piece center bearing failure point
- 31-spline forged steel slip yoke for T56 Magnum XL 31-spline output shaft
- 113mm manual pinion flange — confirm your vehicle's pinion flange size before ordering
- 1350 series U-joints with clearances less than 0.002" for smooth power transfer
- Shaft runout less than 0.010" and balanced to less than 0.20 oz up to 8,000 RPM
- Hand-assembled and computer-welded
- 100% vibration-free guarantee backed by over 90 years of high-speed balancing expertise
Description
Your factory steel two-piece driveshaft was designed for daily driving, not for handling the increased power output of a T56 Magnum XL swap. This Dynotech aluminum one-piece driveshaft eliminates the failure-prone center support bearing while dramatically reducing rotating mass — translating directly to improved throttle response, quicker acceleration, and reduced elapsed times at the track.
Dynotech Engineering Services traces its roots to Balance Engineering by General Motors in 1923. Today, they supply driveshafts for 75-80% of NASCAR teams, along with NHRA, SCCA, NMRA, and professional off-road racing. Every Dynotech driveshaft is hand-assembled, computer-welded, and high-speed balanced to tolerances that exceed industry standards — shaft runout under 0.010", U-joint clearances under 0.002", and balance verified at speeds up to 8,000 RPM.
Constructed from 6061-T6 aluminum with a 3.5" diameter and 0.125" wall thickness, this shaft delivers the strength needed for high-horsepower applications while weighing significantly less than the factory steel assembly. The forged steel 31-spline slip yoke mates directly to the T56 Magnum XL's output shaft, and the 113mm rear pinion flange fits 2015-2017 Mustang GT manual transmission applications. 2018+ S550 Mustangs use a different flange size — verify your pinion flange dimensions before ordering.
Designed specifically for 2015 and newer Mustangs equipped with 5.0L Coyote engines and T56 Magnum XL 6-speed transmissions. This is a precision-built, direct bolt-in component from a manufacturer with a proven track record at the highest levels of motorsport.
Kit Includes
- 3.5" diameter 6061-T6 aluminum driveshaft tube (0.125" wall thickness)
- 31-spline forged steel slip yoke (1350 series)
- 113mm manual pinion flange
- 1350 series universal joints (precision-balanced)
- Mounting hardware
Important: Confirm your vehicle's pinion flange size (113mm or 110mm) before shipping. 2015-2017 Mustang GT manual transmission applications typically use the 113mm flange, while automatic applications and 2018+ models may differ.