Description
Brinn Predator Transmissions 70600 – Product Overview
The Brinn Predator Transmissions 70600 is a racing-focused 2-speed manual transmission from Brinn Inc. It belongs to the Brinn Predator Transmissions product line and is supplied as a new, non-remanufactured transmission assembly sold individually.
This product is identified by Manufacturer’s Part Number 70600 and Summit Racing Part Number BRN-70600. These identifiers help racers, race shops, mechanics, and parts departments confirm the correct transmission before ordering.
The Predator platform was developed with a patented design focused on low rotating weight, reduced maintenance, and racing performance. It features a lightweight internal clutch and does not use plastic parts.
The Brinn Predator Transmissions 70600 uses a 2-speed gear layout with 2.68 first gear and 1.00 second gear. This gives racers a simple, purpose-built transmission setup for Circle Track applications where strength, weight savings, and direct performance matter.
The transmission uses a 1.375-inch input shaft diameter with 10 input splines. It also uses a 27-spline output shaft with a 1.165-inch output shaft spline diameter.
This model uses a magnesium case, helping reduce overall weight compared with heavier case materials. The supplied details list the Predator transmission weight at only 45 lbs, making weight reduction one of its strongest advantages.
Fitment and Application Details
The Brinn Predator Transmissions 70600 is built for racing applications and is described as a direct replacement for Muncie or Borg Warner transmissions where the listed specifications match the vehicle and racing setup.
Fitment should be confirmed before ordering by checking the racing chassis, bellhousing requirement, input spline count, output shaft spline count, output yoke, driveshaft length, transmission mount, shifter setup, yoke length, and race class requirements.
The transmission uses an SAE 10-tooth input shaft spline and a 6-inch long 27-tooth output shaft spline. The supplied details state that the output shaft will accept any length yoke.
This product does not include a bellhousing, does not include a yoke, and does not include a shifter. Buyers should confirm all supporting drivetrain parts before ordering.
The internal clutch eliminates the need for an external clutch assembly. This is an important fitment and installation detail because it changes the supporting clutch requirements compared with traditional manual transmission setups.
For buyers browsing the manual transmissions category, this product fits naturally with Circle Track drivetrain components, bellhousings, yokes, driveshaft parts, racing shifters, transmission mounts, and installation hardware.
Build Quality and Racing Performance
The Brinn Predator Transmissions 70600 is built around a patented racing design focused on low rotating weight and reduced maintenance.
One of its most important features is the lightweight internal clutch. This design eliminates the need for an external clutch assembly, reducing drivetrain complexity and supporting a cleaner racing-focused setup.
The transmission uses gun-drilled input and output shafts for weight reduction. Reducing shaft weight helps lower rotating mass, which is important in racing applications where response and efficiency matter.
Critical components are cryogenically treated for maximum strength. Cryogenic treatment is used to support durability in demanding racing environments where drivetrain components face repeated load cycles.
The reverse function uses the existing geartrain and does not rely on internal chains or belts. This design supports simplicity and helps reduce potential weak points inside the transmission.
The magnesium case is another major performance feature. Magnesium is valued in racing components because it helps reduce weight while still supporting the structure required for competition use.
The Predator transmission is listed at only 45 lbs, giving racers a lightweight drivetrain option for Circle Track applications.
What Makes This Transmission a Strong Choice
The Brinn Predator Transmissions 70600 is a strong choice for racers who need a lightweight, purpose-built transmission with an internal clutch and minimal maintenance requirements.
One of its biggest strengths is the internal clutch design. By eliminating the need for an external clutch assembly, the Predator simplifies the drivetrain setup and reduces the number of external components required.
Another key strength is low rotating weight. The supplied product details describe the Predator as offering the lowest rotating weight in the Circle Track market, supported by its lightweight internal clutch and gun-drilled shaft design.
The 2.68 first gear and 1.00 second gear provide a focused racing gear layout. The direct 1.00 second gear supports efficient power transfer in competition use.
The transmission’s magnesium case and 45 lb weight make it appealing for race teams looking to reduce vehicle weight without sacrificing performance-focused design.
The direct replacement layout for Muncie or Borg Warner transmissions is also valuable for racers working with compatible existing drivetrain setups.
For buyers who want a Brinn racing transmission with internal clutch operation, lightweight construction, cryogenically treated components, and Circle Track-focused performance, the 70600 Predator is a strong option.
Ideal Buyers and Use Cases
The Brinn Predator Transmissions 70600 is best for Circle Track racers, race teams, racing mechanics, chassis builders, and performance shops working on compatible competition vehicles.
It is suitable for buyers who need a 2-speed racing transmission with low rotating weight, internal clutch operation, magnesium case construction, and a direct replacement-style fit for Muncie or Borg Warner transmission applications.
This product is also useful for racers who want a transmission with minimal maintenance requirements and fewer clutch-related external components.
It is not a complete installation kit. The bellhousing is not included, the yoke is not included, and the shifter is not included. Buyers should confirm all required racing drivetrain components before ordering.
The best buyer for this product is someone who has already confirmed race class rules, chassis fitment, bellhousing compatibility, input and output shaft requirements, yoke needs, shifter setup, driveshaft length, and installation hardware.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | Brinn Predator Transmissions 70600 |
| Brand | Brinn Inc. |
| Manufacturer’s Part Number | 70600 |
| Part Type | Manual Transmissions |
| Product Line | Brinn Predator Transmissions |
| Summit Racing Part Number | BRN-70600 |
| Number of Gears | 2 |
| Input Shaft Diameter | 1.375 in. |
| Input Spline Quantity | 10 |
| Input Spline Type | SAE 10-tooth input shaft spline |
| Output Shaft Spline Quantity | 27 |
| Output Shaft Spline Diameter | 1.165 in. |
| Output Shaft Length | 6 in. |
| Bellhousing Included | No |
| Yoke Included | No |
| Yoke Compatibility | Output shaft will accept any length yoke |
| Shifter Included | No |
| First Gear Ratio | 2.68:1 |
| Second Gear Ratio | 1.00:1 |
| Reverse Gear Ratio | Supplied details list both 2.68:1 and 1.78:1; confirm before ordering |
| Case Material | Magnesium |
| Clutch Design | Lightweight internal clutch |
| External Clutch Required | No external clutch assembly required |
| Shaft Design | Gun-drilled input and output shafts |
| Critical Components | Cryogenically treated |
| Reverse Design | Uses existing geartrain; no internal chains or belts |
| Weight | 45 lbs |
| Plastic Components | No plastic parts |
| Remanufactured | No |
| Quantity | Sold individually |
| Application Focus | Circle Track racing; direct replacement for compatible Muncie or Borg Warner applications |
Ordering Support and Fitment Guidance
Before ordering the Brinn Predator Transmissions 70600, buyers should confirm the complete racing drivetrain setup for the intended application.
Important details include race class rules, chassis setup, original transmission type, bellhousing compatibility, input spline requirements, output yoke requirements, driveshaft length, transmission mount, shifter setup, clearance, and installation hardware.
This transmission uses a 1.375-inch 10-spline input shaft and a 27-spline output shaft with a 1.165-inch output spline diameter. These dimensions should be checked carefully before purchase.
The transmission does not include a bellhousing, does not include a yoke, and does not include a shifter.
The supplied details include conflicting reverse gear ratio information, listing 2.68:1 in one section and 1.78:1 in another. Buyers should confirm the exact reverse ratio before ordering if that detail is important for the build.
For a complete installation, buyers may also need a compatible bellhousing, yoke, shifter, driveshaft parts, transmission mount, fluid, and racing-specific hardware.
The Brinn Predator Transmissions 70600 is built for racers who want a lightweight, low-maintenance, internally clutched 2-speed transmission designed for Circle Track performance.
Frequently Asked Questions
What is the Brinn Predator Transmissions 70600?
The Brinn Predator Transmissions 70600 is a 2-speed manual racing transmission from Brinn Inc. It features a patented lightweight internal clutch design, magnesium case, 10-spline input shaft, 27-spline output shaft, and low rotating weight for Circle Track applications.
Does this transmission require an external clutch assembly?
No. The supplied product details state that the internal clutch eliminates the need for any external clutch assembly. This is one of the main design advantages of the Brinn Predator transmission.
What are the gear ratios for the Brinn Predator 70600?
The listed forward gear ratios are 2.68 first gear and 1.00 second gear. The supplied details conflict on reverse ratio, listing both 2.68:1 and 1.78:1, so buyers should confirm the exact reverse ratio before ordering.
Does this transmission include a bellhousing, yoke, or shifter?
No. The bellhousing is not included, the yoke is not included, and the shifter is not included. Buyers should select compatible parts based on the vehicle and racing setup.
What does this transmission replace?
The supplied details state that the Brinn Predator Transmissions 70600 is a direct replacement for compatible Muncie or Borg Warner transmissions. Fitment should still be verified before ordering.
How much does the Brinn Predator transmission weigh?
The supplied details list the Brinn Predator transmission at only 45 lbs. Its magnesium case, internal clutch design, and gun-drilled shafts support its lightweight racing focus.
Is the Brinn Predator 70600 remanufactured?
No. The supplied specifications list Remanufactured: No. This transmission is sold individually as part of the Brinn Predator Transmissions product line.
Reviews
There are no reviews yet.