DSE Ford 9-Inch Aluminum Center Section - 4.11 Ratio - 31-Spline Truetrac - 90-00030
Gear your Ford 9-inch rear end for hard-hitting performance with the Detroit Speed 90-00030 Aluminum Center Section. This assembly combines an aggressive 4.11 gear ratio with aluminum construction, a 31-spline configuration and a Truetrac limited-slip differential. The numerically higher 4.11 gearing puts greater emphasis on acceleration and engine response, making this version an appealing choice for performance builds where getting through the gears quickly matters more than relaxed highway gearing.
The 90-00030 pairs its 4.11 gearing with a 31-spline configuration and gear-driven Truetrac differential. The Truetrac uses a gear-driven limited-slip design rather than conventional friction clutch packs, providing automatic torque biasing without clutch packs that require periodic replacement. For performance street, restomod and Pro Touring builds that call for an aggressive final-drive ratio, this Detroit Speed Ford 9-inch center section brings together a proven differential design and a performance-oriented 4.11 gear combination.
Specifications
- Part Number: 90-00030
- Manufacturer: Detroit Speed
- Product Type: Ford 9-Inch Center Section
- Rear End Type: Ford 9-Inch
- Construction: Aluminum
- Gear Ratio: 4.11
- 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
- Aggressive 4.11 gear ratio places a strong emphasis on acceleration and engine response
- 31-spline configuration for use with compatible Ford 9-inch axles
- Truetrac limited-slip differential provides automatic torque biasing
- Gear-driven differential design eliminates conventional friction clutch packs
- Aluminum construction
- Well suited to performance street, restomod and Pro Touring Ford 9-inch rear axle combinations requiring aggressive gearing
Fitment
- Ford 9-Inch Rear Axle Applications
- Applications Using Compatible 31-Spline Axles
Fitment Notes
Detroit Speed identifies part number 90-00030 as a Ford 9-inch aluminum assembly with a 4.11 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. Because a 4.11 final-drive ratio can significantly affect engine RPM at cruising speed, transmission gearing and tire diameter should also be considered when selecting this ratio.
FAQs
What gear ratio does the DSE 90-00030 use?
The Detroit Speed 90-00030 uses a 4.11 gear ratio. This numerically higher ratio emphasizes acceleration and engine response, making it a performance-focused choice when matched appropriately to the vehicle's transmission, tire diameter and intended use.
What differential does the DSE 90-00030 use?
The 90-00030 uses a Truetrac limited-slip differential. Its gear-driven design automatically biases torque without relying on the conventional friction clutch packs used in many other limited-slip differential designs.
What axle spline count is required for the DSE 90-00030?
Detroit Speed identifies the 90-00030 as a 31-spline Ford 9-inch assembly. It should be paired with compatible 31-spline axles and the appropriate Ford 9-inch rear axle components for the vehicle.
Get Your Detroit Speed Components from Beefcake Racing
Put aggressive 4.11 gearing into your Ford 9-inch rear end with the Detroit Speed 90-00030 Aluminum Center Section with 31-spline Truetrac from Beefcake Racing. If you need help confirming compatibility or choosing 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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