The TREMEC TR-4050 5-Speed is geared for rock crawling with a 6.16 1st and 6.03 reverse. Strong too, with a 600 lb•ft torque rating. The transmission isn't just good on the trail, it's street friendly too with a .76 overdriven 5th gear. Your 4WD may be built Ford tough, but the TREMEC TR-4050 can elevate your ride to the next level.