Brinn 70600 Predator Racing Transmission

The Brinn 70600 Predator Racing Transmission is a revolutionary 2-speed internal clutch racing transmission designed for circle track racing, IMCA Modifieds, Stock Cars, Late Models, and other high-performance dirt and asphalt race cars. Engineered with Brinn’s patented lightweight design, the Predator eliminates the need for an external clutch assembly while delivering exceptional power transfer, lightning-fast shifts, and outstanding durability. Its 45-pound aluminum construction and ultra-low rotating weight make it one of the lightest and most efficient racing transmissions available today.

Rated for 600 lb-ft of torque, the Predator features a 2.68:1 low gear, 1.00:1 direct-drive high gear, and 1.78:1 reverse gear. Gun-drilled input and output shafts reduce rotating mass, while cryogenically treated internal components maximize strength and reliability. The transmission is a direct replacement for many Muncie and Borg-Warner transmissions and requires minimal maintenance, making it a favorite among competitive racers. It is also approved for several major racing organizations, including IMCA.

Features

• Genuine Brinn 70600 Predator Racing Transmission
• Patented lightweight 2-speed racing transmission
• Internal clutch eliminates external clutch assembly
• Rated for 600 lb-ft of torque
• Lowest rotating weight in its class
• Lightweight aluminum case
• Gun-drilled input and output shafts for reduced rotating mass
• Cryogenically treated internal components for maximum strength
• Direct replacement for Muncie and Borg-Warner transmissions
• No plastic parts, belts, or internal chains
• Direct-drive high gear for maximum power transfer
• Smooth, positive shifting
• Minimal maintenance requirements
• Compatible with Brinn Predator Shifter Assembly (Part #70630)
• Approved for IMCA and numerous circle track racing classes

Gear Ratios

• Low Gear: 2.68:1
• High Gear: 1.00:1 (Direct Drive)
• Reverse: 1.78:1

Specifications

• Brand: Brinn
• Manufacturer Part Number: 70600
• Model: Predator
• Transmission Type: 2-Speed Racing Transmission
• Torque Capacity: 600 lb-ft
• Case Material: Aluminum
• Dry Weight: Approximately 45 lbs
• Input Shaft Diameter: 1.0625 Inches (1-1/16″)
• Input Shaft Spline Count: 10
• Output Shaft Diameter: 1.1875 Inches (1-3/16″)
• Output Shaft Spline Count: 27
• Output Style: Slip-On Yoke
• Shifter Style: Linkage Operated
• Bellhousing Included: No
• Shifter Included: No
• Yoke Included: No
• Recommended Fluid: Brinn RT1 Transmission Fluid

Package Includes

• Brinn 70600 Predator Racing Transmission
• Internal Clutch Assembly
• Front Bearing Retainer
• Internal Gear Assembly
• Installation Documentation

Bellhousing, Brinn Predator Shifter Assembly, transmission mount, slip yoke, driveshaft, and transmission fluid are sold separately unless otherwise specified.

Recommended Applications

Ideal for:

• IMCA Modified Race Cars
• IMCA Stock Cars
• Dirt Modifieds
• Circle Track Racing
• Dirt Track Racing
• Asphalt Racing
• Hobby Stock Race Cars
• Late Models
• Custom Racing Chassis

Compatible with race vehicles using the appropriate bellhousing and driveline components. The Brinn Predator 70600 is approved for use in several major racing sanctioning bodies, including IMCA.

Installation Requirements

Installation may require:

• Brinn Predator Shifter Assembly (Part #70630)
• Racing bellhousing
• 10-spline clutch disc
• 27-spline slip yoke
• Transmission mount
• Driveshaft modification depending on chassis
• Brinn RT1 Transmission Fluid

Professional installation is recommended to ensure proper drivetrain alignment, optimal shifting performance, and maximum reliability under racing conditions.

Warranty

The Brinn 70600 Predator Racing Transmission is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal racing use and proper installation.

Why Choose the Brinn 70600 Predator Racing Transmission?

The Brinn 70600 Predator Racing Transmission is engineered for racers who demand the lightest, strongest, and most reliable drivetrain possible. With a 600 lb-ft torque capacity, 45-pound aluminum case, internal clutch design, 2.68:1 low gear, direct-drive high gear, and cryogenically treated internals, it delivers superior acceleration, smooth shifting, and exceptional durability. Whether you’re competing in IMCA, dirt track, or asphalt racing, the Predator provides the performance advantage needed to stay ahead of the competition.