TREMEC TDET18574 TR-4050 5-Speed Transmission GM 2WD

The TREMEC TDET18574 TR-4050 5-Speed Transmission GM 2WD is a heavy-duty manual transmission engineered specifically for GM rear-wheel-drive trucks, SUVs, restomods, and custom performance builds . Designed as a modern replacement for older truck transmissions, the TR-4050 combines exceptional strength, smooth synchronized shifting, and a deep low first gear that delivers outstanding pulling power for towing, off-road-inspired builds, and high-torque street applications. Built to handle 600 lb-ft of torque , the TR-4050 features a 6.16:1 granny low first gear , 0.76 overdrive , and fully synchronized forward gears, eliminating the need for double-clutching. A lightweight die-cast aluminum case, carbon-lined synchronizers, tapered roller bearings, and high-strength helical gears provide exceptional durability while maintaining smooth, quiet operation. The transmission also includes a GM input shaft , 26-spline input , 31-spline output , integrated shifter, and a 6-bolt PTO provision for hydraulic pumps or auxiliary accessories. Features Genuine TREMEC TDET18574 TR-4050 5-Speed Manual Transmission Designed for GM 2WD truck applications Heavy-duty 600 lb-ft torque capacity Deep 6.16:1 granny low first gear Fully synchronized forward gears Smooth carbon-lined single and double-cone synchronizers Lightweight die-cast aluminum housing High-strength constant-mesh helical gears Heavy-duty tapered roller bearings on all shafts Multiple-rail shifter for precise gear engagement Integrated shifter assembly included Single overdrive for reduced highway engine RPM Right-side 6-bolt PTO mounting provision Excellent for towing, hauling, work trucks, and restomod builds Gear Ratios 1st Gear: 6.16:1 2nd Gear: 3.11:1 3rd Gear: 1.71:1 4th Gear: 1.00:1 5th Gear: 0.76:1 Reverse: 6.03:1 Specifications Brand: TREMEC Manufacturer Part Number: TDET18574 Model: TR-4050 Transmission Type: 5-Speed Manual Application: GM 2WD Drive Type: Rear-Wheel Drive Torque Capacity: 600 lb-ft Case Material: Die-Cast Aluminum Input Shaft Diameter: 1.125 Inches Input Shaft Spline Count: 26 Output Shaft Diameter: 1.375 Inches Output Shaft Spline Count: 31 Gear Design: Constant Mesh Helical Synchronizers: Carbon Friction Single & Double Cone Speedometer Output: Electronic PTO Provision: 6-Bolt Right Side Shifter Included: Yes Yoke Included: No Bellhousing Included: No Recommended Fluid: TREMEC HP-MTF or manufacturer-approved manual transmission fluid Dry Weight: Approximately 135 lbs Package Includes TREMEC TDET18574 TR-4050 5-Speed Manual Transmission Integrated Shifter Assembly Front Bearing Retainer Internal Shift Components Installation Documentation Bellhousing, clutch kit, flywheel, hydraulic release bearing, transmission mount, crossmember, slip yoke, driveshaft, and transmission fluid are sold separately unless otherwise specified. Recommended Applications Ideal for: Chevrolet C10 Chevrolet C20 Chevrolet C30 Chevrolet Silverado 2WD Chevrolet Custom Truck Builds GMC C1500 GMC C2500 GMC C3500 Street Trucks Restomod Trucks High-Torque LS Truck Swaps Work Trucks Towing Applications Custom Hot Rod Trucks Compatible with GM rear-wheel-drive applications using the appropriate GM bellhousing, clutch system, and driveline components. Installation Requirements Installation may require: GM-compatible bellhousing 26-spline clutch disc Hydraulic clutch master cylinder 31-spline slip yoke Transmission crossmember Transmission mount Driveshaft modification depending on vehicle TREMEC HP-MTF or approved manual transmission fluid Professional installation is recommended to ensure proper driveline alignment, clutch operation, and maximum transmission performance. Warranty The TREMEC TDET18574 TR-4050 5-Speed Transmission GM 2WD is backed by a 1-Year Limited Warranty , covering defects in materials and workmanship under normal use and proper installation. Warranty support is provided directly through TREMEC. Why Choose the TREMEC TDET18574 TR-4050? The TREMEC TDET18574 TR-4050 is the ideal heavy-duty manual transmission for GM truck enthusiasts who demand strength, reliability, and modern drivability. Featuring a 600 lb-ft torque rating , 6.16:1 granny low first gear , 0.76 overdrive , carbon-lined synchronizers, tapered roller bearings, and a lightweight aluminum housing, it delivers exceptional pulling power, smooth shifting, and dependable performance for towing, hauling, off-road-inspired builds, and custom GM truck restorations.