Brinn - Original Transmission - Aluminum Case

Brinn – Original Transmission – Aluminum Case

The Brinn Original Transmission is the industry standard for reliability, performance, and ease of service in circle track racing. Featuring a lightweight aluminum case and precision-engineered internals, it provides smooth shifting, exceptional strength, and reduced rotating mass for maximum acceleration and control.

This proven two-speed transmission eliminates the need for an external clutch and throwout bearing assembly, reducing cost and simplifying installation. Its dog clutch design ensures crisp, precise shifts, while gundrilled shafts and cryogenically treated gears provide unmatched durability and performance.

Key Features:

• Lightweight: 45.4–51.4 lbs (depending on model, without fluid)
• Reverse idler gear and low-speed gear are not engaged in direct drive
• Gundrilled input and output shafts reduce weight
• Superior dog clutch design provides durability and smooth shifting
• Eliminates clutch and throwout bearing assembly for reduced cost and maintenance
• Dog clutch and detent design eliminate the need for special shifters
• Separate low and reverse gears for precise shifting
• Easy assembly, disassembly, and service
• Six-inch, 27-tooth output shaft spline accepts any yoke length
• SAE 10-tooth input shaft spline
• Cryogenically treated shafts and gears for superior strength
• Low gear ratio: 1.88:1
• Reverse gear ratio: 2.29:1
• Uses 3/4" or 7/8" clutch master cylinder
• Brinn Racing quality engineered component