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TREMEC TR-4050 Conversion Kits for 1966-1977 Ford Bronco

TREMEC TR-4050 Early Ford Bronco

Silver Sport Transmissions keeps the past alive and on the trail with a modern TREMEC TR-4050 5-Speed for early Ford Broncos. Now you can cruise and crawl in style with a .76 overdrive for the highway and super low 6.16 1st for when you answer adventure's call. Go ahead and put in a high-powered engine while you're at it because the TR-4050 can handle a whopping 425 lb•ft torque (based on 15,000+ lb GVWR).


When you convert to the TREMEC TR-4050 5-Speed, you will experience:


  • Low, rock crawling 1st gear (6.16) and reverse (6.03)
  • Improved fuel mileage on the highway in overdriven 5th gear (.76)
  • Excellent shift feel and performance
  • Reduced NVH (noise - vibration - harshness) in overdrive


TREMEC TR-4050 Gear Ratios


6.16, 3.11, 1.71, 1.00, 0.76, and 6.03 Reverse


TREMEC TR-4050 Conversion Kit Components 


  1. TREMEC TR-4050TREMEC TR-4050 5 Speed Overdrive
    • 425 lb•ft torque capacity (based on 15,000+ lb GVWR)
    • High-contact, constant mesh, helical gears for maximum strength
    • Die-cast aluminum alloy housing saves weight while offering considerable rigidity
    • Standard right-hand, six-bolt PTO offers the ability to run hydraulic pumps
    • The multiple rail, internal shifter provides excellent shift feel and performance
    • Tapered bearing on input, main, and counter shafts provide excellent internal stability
    • Needle bearings under gears reduce friction and noise output
    • Fully synchronized
    • Advanced synchronizer technology promotes smoother shifting and reduced shift effort
    • 5th gear synchronizer mounted to the countershaft to improve NVH in overdrive
    • 3.67 qt oil capacity
  1. Pilot Bearing 
  2. Advanced Friction™ Flywheel
  3. Advanced Friction™ Clutch
  4. QuickDraw Aluminum, Heavy-duty Bellhousing 
  5. Hydraulic Clutch Actuator Kit
  6. Reverse Light Connector
  7. Advance Adapters Dana 20 Transfer Case Adapter
  8. Crossmember
  9. Isolator Mount
  10. STX® Shifter 
  11. Shifter Handle (Bench or Bucket)
  12. Classic 5-Speed Shifter Knob
  13. Hardware
  14. Fluid
  15. Factory Warranty - learn more


Click the 4WD Quick Quote button or call to get a detailed estimate.


4WD Quick Quote


Why buy from Silver Sport Transmissions?

  1. Fast Shipping
  2. Complete Kits
  3. Excellent Customer Service
    • Lifetime tech support
    • Knowledgeable staff
  4. Premium Components
    • Only SST has experienced and licensed engineers on staff. We know what fits, what works and how to install it.