DSE Ford 9-Inch Aluminum Center Section - 3.89 Ratio - 31-Spline Truetrac - 90-00025
Build your Ford 9-inch rear end around a performance-focused combination with the Detroit Speed 90-00025 Aluminum Center Section. This assembly combines a 3.89 gear ratio with an aluminum Ford 9-inch configuration, 31-spline axle compatibility and a Truetrac limited-slip differential. The 3.89 gearing makes this version particularly attractive for performance builds where harder acceleration and a more aggressive final-drive ratio are priorities.
The 90-00025 pairs its 3.89 gearing with a 31-spline configuration and gear-driven Truetrac differential. Unlike a conventional clutch-type limited-slip differential, the Truetrac uses a gear-driven design without traditional friction clutch packs. Combined with the aluminum construction and performance-oriented gearing, this Detroit Speed center section provides a strong foundation for a street performance, restomod or Pro Touring Ford 9-inch rear axle combination.
Specifications
- Part Number: 90-00025
- Manufacturer: Detroit Speed
- Product Type: Ford 9-Inch Center Section
- Rear End Type: Ford 9-Inch
- Construction: Aluminum
- Gear Ratio: 3.89
- Axle Spline Count: 31-Spline
- Differential: Truetrac
- Differential Type: Gear-Driven Limited Slip
Features
- Performance-oriented center section for Ford 9-inch rear axle applications
- 3.89 gear ratio provides aggressive gearing for acceleration-focused performance builds
- 31-spline configuration for use with compatible Ford 9-inch axles
- Truetrac limited-slip differential provides automatic torque biasing
- Gear-driven differential design does not use conventional friction clutch packs
- Aluminum construction
- Well suited to performance street, restomod and Pro Touring Ford 9-inch rear axle combinations
Fitment
- Ford 9-Inch Rear Axle Applications
- Applications Using Compatible 31-Spline Axles
Fitment Notes
Detroit Speed identifies part number 90-00025 as a Ford 9-inch aluminum assembly with a 3.89 gear ratio, 31-spline configuration and Truetrac differential. Verify axle spline count and all other rear axle compatibility requirements for your specific build before ordering.
FAQs
What gear ratio does the DSE 90-00025 use?
The Detroit Speed 90-00025 uses a 3.89 gear ratio. Compared with numerically lower ratios, 3.89 gearing places greater emphasis on acceleration, making it an appealing option for performance-oriented builds when properly matched to the vehicle's transmission, tire diameter and intended use.
What differential does the DSE 90-00025 use?
The 90-00025 uses a Truetrac limited-slip differential. Its gear-driven design provides automatic torque biasing without relying on the conventional friction clutch packs found in many other limited-slip differential designs.
What axle spline count is required for the DSE 90-00025?
Detroit Speed identifies the 90-00025 as a 31-spline Ford 9-inch assembly. It must therefore be matched with compatible 31-spline axles and the appropriate Ford 9-inch rear axle components for the build.
Get Your Detroit Speed Components from Beefcake Racing
Build your Ford 9-inch rear end with the Detroit Speed 90-00025 Aluminum Center Section featuring 3.89 gearing and a 31-spline Truetrac differential from Beefcake Racing. If you need help confirming compatibility or selecting the right Detroit Speed rear-end components for your build, email sales@beefcakeracing.com or call 1-855-827-7223 for assistance.
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