TREMEC TR-4050 4WD 5-Speed Manual Transmission – TDET17341

Off-Road Strength Meets Everyday Driveability

Built for rugged terrain and serious towing, the TREMEC TR-4050 5-Speed Manual Transmission (Part #TDET17341) is a heavy-duty 4WD gearbox engineered to handle 600 lb-ft of torque with smooth, refined shifting—whether you're rock crawling, towing, or daily driving.

Originally used in Ford F-550 Super Duty trucks, the TR-4050 brings commercial-grade strength to the aftermarket, offering proven reliability in demanding environments. Its wide gear spread, from the ultra-low 6.16 first gear to the fuel-saving 0.76 overdrive, makes it ideal for off-road, overland, and utility vehicle builds.

Gear Ratios for Maximum Versatility:

• 1st: 6.16

• 2nd: 3.11

• 3rd: 1.71

• 4th: 1.00

• 5th: 0.76 (Overdrive)

• Reverse: 6.03

Key Features:

• Massive 600 lb-ft Torque Capacity – Built to handle high-load, high-stress applications

• All-Synchronized Gearing – Including reverse, for smooth, confident shifts

• Right-Side 6-Bolt PTO Port – Perfect for running hydraulic pumps or accessories

• Helical Constant-Mesh Gears – Reduce noise and increase gear strength

• Needle Bearings Under All Gears – Lower friction, lower heat, quieter operation

• Die-Cast Aluminum Case – Strong, lightweight, and corrosion resistant

• Advanced Synchronizer Technology – Easier shifting with reduced effort

• 5th Gear Synchronizer on Countershaft – Improves NVH in overdrive

• Multi-Rail Internal Linkage – Crisp, precise shift feel

Dimensions & Fitment:

• Weight: 164 lbs (dry)

• Overall Length: 19.5"

• Input Shaft: 1.125" dia, 10-spline, 6.5" length

• Pilot Diameter: 0.590"

• Index Retainer Diameter: 5.596"

Upgrade with Silver Sport Transmissions:

• STX® Short-Throw Shifter Options – For quicker, tighter gear changes

• Multiple 4WD Conversion Kits Available – Including adapter plates, mounts, and more

• Engineered Support for Off-Road Builds, Classic Trucks, and Custom Applications

Why Choose the TREMEC TR-4050?

If you're looking for a manual 4WD transmission that delivers unmatched strength, smoother shifting, and off-road readiness, the TR-4050 is your answer. Ideal for off-road trucks, restomods, classic 4x4 conversions, and high-torque utility builds, it combines OEM-proven durability with features specifically optimized for the aftermarket.

Whether you're crawling over rocks, hauling heavy loads, or cruising the highway with a big-torque engine, the TREMEC TR-4050 offers the perfect blend of durability and driveability.

Perfect For:

• 4WD Truck Builds

• Off-Road & Overland Rigs

• Classic Truck Restorations

• Utility Vehicles & Towing Setups

• LS Swaps & High-Torque Conversions