DSE Ford 9-Inch N-Series Center Section - 4.11 Ratio - 31-Spline Eaton TrueTrac - GFX 1350 Yoke - 90-20030
Give your Ford 9-inch rear end the gearing, traction and hardware to handle a serious performance build with the Detroit Speed 90-20030 N-Series Center Section. This assembled third member combines an aggressive 4.11 gear ratio with a 31-spline Eaton TrueTrac and GFX 1350 Ultra Performance yoke. The assembly is built around a genuine Ford SVO nodular iron H case with 3.250-inch bearings and chromoly bearing caps, creating a strong foundation for performance street, restomod and Pro Touring applications.
Detroit Speed builds the 90-20030 with premium components throughout, including a Ford Daytona pinion support, ARP pinion support bolts, safety-wired ARP ring gear bolts, premium ring and pinion, solid pinion preload spacer and TIMKEN bearings. The Eaton TrueTrac provides gear-driven limited-slip operation without conventional friction clutch packs, while the GFX 1350 Ultra Performance yoke includes a U-joint strap kit with 12-point bolts. Detroit Speed individually inspects and hand deburrs the components used in its rear gear assemblies, adding another level of quality control to this performance-focused Ford 9-inch package.
Specifications
- Part Number: 90-20030
- Manufacturer: Detroit Speed
- Product Type: Differential Assembly / Ford 9-Inch Center Section
- Series: N-Series (SVO)
- Carrier Style: Ford 9-Inch
- Case: Ford SVO Nodular Iron H Case
- Case Material: Nodular Iron
- Case Bearing Size: 3.250 Inches
- Bearing Caps: Chromoly
- Gear Ratio: 4.11
- Axle Shaft Spline Count: 31-Spline
- Differential: Eaton TrueTrac
- Yoke: GFX 1350 Ultra Performance
- Yoke Style: 1350
- U-Joint Retention: Strap Kit with 12-Point Bolts
- Pinion Support: Ford Daytona
- Pinion Support Style: Daytona
- Pinion Support Bolts: ARP
- Ring Gear Bolts: ARP, Safety Wired
- Ring and Pinion: Premium
- Pinion Preload: Solid Spacer
- Bearings: TIMKEN
- Pinion Seal: Ford
- Daytona Pinion Support D O-Ring: Included
- Oil Slinger: Included
- Emission Code: 4
Features
- N-Series Ford 9-inch center section engineered for high-performance rear axle builds
- Aggressive 4.11 gear ratio for performance-oriented final-drive gearing
- 31-spline Eaton TrueTrac provides gear-driven limited-slip operation
- Genuine Ford SVO nodular iron H case made in the USA with Ford tooling
- 3.250-inch case bearings and chromoly bearing caps provide a strong foundation for the differential assembly
- GFX 1350 Ultra Performance yoke for compatible 1350-series driveline applications
- U-joint strap kit with 12-point bolts included
- Ford Daytona pinion support
- ARP pinion support bolts
- Safety-wired ARP ring gear bolts
- Premium ring and pinion
- Solid pinion preload spacer
- TIMKEN bearings
- Ford pinion seal
- Daytona pinion support D O-ring and oil slinger included
- Components are individually inspected and hand deburred by Detroit Speed for quality assurance
Fitment
- Ford 9-Inch Rear Axle Applications
- Applications Using Compatible 31-Spline Axles
- Applications Using a Compatible 1350-Series Driveline Connection
Fitment Notes
Detroit Speed specifies part number 90-20030 as an N-Series Ford 9-inch differential assembly with a 4.11 gear ratio, 31-spline Eaton TrueTrac and GFX 1350 Ultra Performance yoke. Confirm axle spline count, driveshaft and U-joint compatibility, and all other rear axle requirements for your specific build before ordering. Transmission gearing and tire diameter should also be considered when selecting a 4.11 final-drive ratio. Detroit Speed lists REM isotropic surface finishing as an available addition for increased performance, durability and trouble-free operation.
FAQs
What gear ratio and differential does the DSE 90-20030 use?
The Detroit Speed 90-20030 combines a 4.11 gear ratio with a 31-spline Eaton TrueTrac. The TrueTrac uses a gear-driven limited-slip design without conventional friction clutch packs.
What case does the DSE 90-20030 N-Series center section use?
Detroit Speed builds the 90-20030 around a genuine Ford SVO nodular iron H case made in the USA with Ford tooling. The case uses 3.250-inch bearings and chromoly bearing caps.
What yoke comes with the DSE 90-20030?
The 90-20030 uses a GFX 1350 Ultra Performance yoke and includes a U-joint strap kit with 12-point bolts. Confirm that your driveshaft and U-joint configuration is compatible with a 1350-series connection before ordering.
Get Your Detroit Speed Components from Beefcake Racing
Build your Ford 9-inch rear end with the Detroit Speed 90-20030 N-Series Center Section featuring aggressive 4.11 gearing, a 31-spline Eaton TrueTrac and GFX 1350 Ultra Performance yoke from Beefcake Racing. For help confirming gearing, axle or driveline compatibility for your build, email sales@beefcakeracing.com or call 1-855-827-7223.
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