Bert Gen 2 Short Transmission Kit for 2 Piece Rear Main Seal

he Bert Gen 2 Short Transmission Kit for 2-Piece Rear Main Seal is a complete lightweight racing transmission package designed specifically for Small Block Chevrolet engines equipped with a 2-piece rear main seal. Engineered for dirt track, circle track, and oval racing, this kit combines the proven Bert Gen II Short Transmission with the essential installation components needed to create a dependable, race-ready drivetrain.

The Bert Gen II transmission is recognized throughout the racing industry for its innovative low rotating mass design. In direct drive (high gear), the first and reverse gear assemblies are completely disengaged, allowing more engine power to reach the rear wheels while reducing internal drag and wear. This design delivers quicker throttle response, improved drivetrain efficiency, and outstanding reliability under demanding racing conditions.

Constructed from lightweight, high-strength aluminum, the Bert Gen II Short Transmission is engineered to handle up to 600 lb-ft of torque while maintaining smooth, consistent operation throughout long race events. The included heavy-duty steel bellhousing is compatible with both Small Block Chevrolet (SBC) and Small Block Ford (SBF) engine bolt patterns and adapts to Muncie and Saginaw transmission mounting patterns commonly used in competitive racing.

Designed exclusively for race vehicles, this transmission kit is ideal for IMCA Modifieds, Wissota Modifieds, Midwest Modifieds, Sport Mods, Hobby Stocks, and other circle track classes where lightweight construction and maximum drivetrain efficiency are critical.

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Features

• Complete Bert Gen II Short Racing Transmission Kit
• Fits Small Block Chevrolet engines with a 2-piece rear main seal
• Lightweight aluminum transmission case
• Rated for up to 600 lb-ft of torque
• Low rotating mass design for improved power transfer
• First and reverse gears disengage completely in high gear
• Heavy-duty steel bellhousing included
• Compatible with SBC and SBF engine bolt patterns
• Fits Muncie and Saginaw transmission bolt patterns
• Precision CNC-machined bellhousing
• Designed for dirt track, circle track, and oval racing
• Competition-use racing transmission

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Specifications

• Brand: Bert Racing
• Transmission Type: Racing Manual
• Number of Speeds: 2
• Torque Capacity: 600 lb-ft
• Case Material: Aluminum
• Input Shaft Diameter: 1.0625 inches
• Input Shaft Spline Count: 10
• Output Shaft Diameter: 1.375 inches
• Output Shaft Spline Count: 27
• High Gear Ratio: 1.00:1
• Shifter Style: Linkage Operated
• Yoke Style: Slip-On
• Bellhousing Included: Yes
• Shifter Included: No
• Slip Yoke Included: No

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Kit Includes

• Bert Gen II Short Racing Transmission
• Heavy-Duty Steel Bellhousing
• Bellhousing Bolt Kit
• Steel Drive Flange for 2-Piece Rear Main Seal
• ARP Crankshaft Bolts
• Performance Transmission Fluid
• 60-Inch Braided Brake Line
• Straight AN Adapter Fitting
• Transmission Storage Stand
• Installation Hardware

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Recommended Applications

Designed for race vehicles equipped with Small Block Chevrolet engines featuring a 2-piece rear main seal, including:

• IMCA Modified
• Wissota Modified
• Midwest Modified
• Sport Mod
• Hobby Stock
• Dirt Modified
• Stock Car
• Circle Track Race Cars
• Oval Track Competition Vehicles

This transmission is intended for competition use only and is not designed for street-driven vehicles.

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Installation Requirements

Installation may require:

• Compatible racing driveshaft
• 27-spline slip yoke
• Racing shifter linkage
• Transmission mount
• Approved racing transmission fluid
• Proper driveline alignment
• Additional installation hardware as required by the vehicle

Professional installation is recommended to ensure maximum performance, reliability, and drivetrain longevity.

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Warranty

The Bert Gen 2 Short Transmission Kit for 2-Piece Rear Main Seal is backed by a 1-Year Limited Warranty, covering defects in materials and workmanship under normal racing use when properly installed and maintained.