Mopar & Dodge Ram 4WD Manual & Automatic Transmission Kits

Toughen your Dodge Ram or Mopar 4x4 with our PerfectFit™ 4WD Overdrive Transmission Kits. We offer the most complete systems for Mopar enthusiasts, featuring the heavy-duty TREMEC TR-4050 5-Speed Manual with its 6.16:1 crawl ratio, or our proprietary A41X 4L60E-based 4-Speed Automatic. Our kits are engineered as total solutions, including every component for a seamless installation. Upgrade your 4WD with modern highway driveability and rugged strength without the hidden costs or missing parts found elsewhere.