Reid Racing S80 Super 80 SFI 4.1 GM 4L80E Replacement Transmission Case

The Reid Racing Super 80® (S80) is a redesigned, high-performance replacement transmission case engineered specifically for GM 4L80E transmissions. Built to correct the weak points of OEM castings and add performance-enhancing features, the Super 80® is the go-to upgrade for high-horsepower builds across drag racing, off-road, rock crawling, and desert truck racing applications.

Key Features:

• SFI 4.1 Certified — Meets stringent SFI safety standards without requiring any internal liner, external shields, blankets, oil pans, or oil pan straps
• Full 360° Internal Case Lugs — Retains the center support and pressure plate for exceptional structural integrity under extreme stress
• Permanent Mold Casting — Increased wall thickness produces extremely strong, accurate, porosity-free, and leak-free castings
• Modular Two-Piece Design — Compatible with all popular engines by simply swapping bolt-on Superglide bellhousings
• Lightweight Construction — Ductile material properties minimize weight and drag while dramatically increasing abuse tolerance
• Drop-In Compatible — Interchangeable with all 4L80E transmissions; early-style models require a few minor modifications
• Pre-Machined — Includes additional stud/nut clearance for Advance Adapters transfer case adapters
• SFI Certification Valid 5 Years — Can be recertified every 5 years by returning the case to Reid Racing

The Super 80® transmission case is ideal for turbocharged muscle cars, drag cars, rock crawlers, and desert racing trucks — any build that demands durability and safety certification beyond what OEM hardware can provide.