Description
The Richmond R504082A RGI-5 Internal Rail 5-Speed Transmission is a premium performance manual transmission engineered for Ford-powered muscle cars, hot rods, street rods, and pro-touring builds. Featuring a 2.87:1 first gear and a 0.82 overdrive fifth gear, this transmission delivers strong acceleration while maintaining comfortable highway cruising. Its compact aluminum case provides excellent transmission tunnel clearance, making it an ideal upgrade for classic Ford applications.
Rated to handle 600 lb-ft of torque, the RGI-5 utilizes an internal three-rail shift system, heavy-duty steel shift forks, and a billet aluminum dual-position short-throw shifter for crisp, positive gear changes. Dual mechanical and electronic speedometer outputs provide compatibility with both classic and modern gauge systems, while multiple shifter mounting positions offer exceptional installation flexibility.
Features
- Genuine Richmond Gear RGI-5 Internal Rail 5-Speed Transmission
- Ford bolt pattern with Ford input shaft
- Rated for 600 lb-ft of torque
- 2.87:1 first gear for excellent launch performance
- 0.82 overdrive for improved highway cruising
- Lightweight aluminum main case
- Internal three-rail shift design
- Heavy-duty steel shift forks
- Billet aluminum top cover
- Billet aluminum short-throw shifter
- Dual-position shifter with multiple mounting options
- Three shifter locations with five possible shifter positions
- Compact case for maximum transmission tunnel clearance
- Mechanical and electronic speedometer outputs
- High-strength steel gears for superior durability
Gear Ratios
- 1st Gear: 2.87:1
- 2nd Gear: 1.89:1
- 3rd Gear: 1.28:1
- 4th Gear: 1.00:1
- 5th Gear: 0.82:1
- Reverse: 2.56:1
Specifications
- Brand: Richmond Gear
- Manufacturer Part Number: R504082A
- Model: RGI-5 Internal Rail
- Transmission Type: 5-Speed Manual
- Application: Ford
- Torque Capacity: 600 lb-ft
- Case Material: Aluminum
- Bellhousing Bolt Pattern: Ford
- Input Shaft Diameter: 1.125 Inches
- Input Shaft Spline Count: 26
- Input Shaft Length: 7.21 Inches
- Input Pilot Diameter: 0.67 Inches
- Output Shaft Diameter: 1.389 Inches
- Output Shaft Spline Count: 31
- Shifter Location: Dual Position
- Speedometer Output: Mechanical and Electronic
- Shifter Style: Internal Rail, Linkage Operated
- Bellhousing Included: No
- Yoke Included: No
Package Includes
- Richmond R504082A RGI-5 5-Speed Manual Transmission
- Billet Aluminum Dual-Position Short-Throw Shifter
- Billet Aluminum Top Cover
- Installation Hardware
- Manufacturer Documentation
Bellhousing, clutch assembly, flywheel, transmission mount, slip yoke, and driveshaft are sold separately unless otherwise specified.
Recommended Applications
Ideal for:
- Ford Mustang
- Ford Falcon
- Ford Fairlane
- Ford Torino
- Ford Maverick
- Ford Ranchero
- Mercury Cougar
- Mercury Comet
- Street Rods
- Hot Rods
- Restomod Projects
- Pro-Touring Builds
- High-Performance Street Cars
Compatible with Ford V8 applications using the appropriate Ford bellhousing and clutch components.
Installation Requirements
Installation may require:
- Ford-compatible bellhousing
- 26-spline clutch disc
- 31-spline slip yoke
- Transmission crossmember
- Transmission mount
- Driveshaft modification depending on vehicle
- Clutch linkage or hydraulic clutch conversion
- Manual transmission lubricant recommended by Richmond Gear
Professional installation is recommended to ensure proper bellhousing alignment, driveline geometry, and reliable long-term performance.
Warranty
The Richmond R504082A RGI-5 Transmission, Ford, Dual Position, .82 Overdrive is backed by a 1-Year / 50,000-Mile Limited Warranty, covering defects in materials and workmanship under normal use and proper installation.
Why Choose the Richmond R504082A RGI-5?
The Richmond R504082A RGI-5 is built for enthusiasts who demand strength, versatility, and smooth performance. With a 600 lb-ft torque capacity, 2.87 first gear, 0.82 overdrive, compact aluminum construction, and an internal rail shifting system featuring a dual-position billet short-throw shifter, this transmission delivers outstanding acceleration, precise shifting, and dependable performance for everything from weekend cruisers to high-performance street and pro-touring builds.
