DSE Assembled Center Section FN988 - 4.10 Ratio - 31-Spline Eaton Truetrac - REM Polished - 070880-410DS-R
Build your Ford 9-inch rear axle around a center section engineered for strength, efficiency, and serious performance with the Detroit Speed FN988 Assembled Center Section. Part number 070880-410DS-R combines a 4.10 gear ratio with a 31-spline Eaton Truetrac differential, REM-polished gears, and a 1350 forged steel pinion yoke with U-bolts. Detroit Speed's FN988 design allows an 8.8-inch gearset to work within a Ford 9-inch housing, giving performance builders the packaging advantages of the 9-inch housing with the quieter and more efficient operation of the 8.8-inch gear design.
This FN988 center section is built around a high-strength nodular cast iron case with forged alloy steel carrier bearing caps and a premium ring and pinion secured with ARP ring gear bolts and safety wire. Internal oil channels provide continuous lubrication to the pinion bearings, while a solid pinion preload spacer helps maintain proper bearing preload. This version adds REM-polished gears to reduce friction and heat while promoting improved oil retention, component life, and quiet operation. Threaded jack bolt holes in the mounting flange also help simplify removal of the center section from the axle housing.
Specifications
- Part Number: 070880-410DS-R
- Product Type: Assembled Center Section
- Case Series: FN988
- Gear Ratio: 4.10
- Differential: 31-Spline Eaton Truetrac
- Axle Shaft Spline Quantity: 31
- Gear Style: Ford 8.8-inch
- Housing Compatibility: Ford 9-inch
- Case Material: Nodular Iron
- Yoke Style: 1350
- REM-Polished Gears: Yes
- Application Specific: No
Features
- FN988 design combines Ford 8.8-inch gears with Ford 9-inch housing compatibility
- 4.10 gear ratio for performance-oriented drivetrain combinations
- 31-spline Eaton Truetrac differential
- REM-polished gears help reduce friction and heat while promoting oil retention
- 8.8-inch gear design provides quieter and more efficient operation than conventional 9-inch components
- High-strength nodular cast iron case
- Forged alloy steel carrier bearing caps
- Premium ring and pinion
- ARP ring gear bolts secured with safety wire
- Internal oil channels continuously lubricate the pinion bearings
- Solid pinion preload spacer
- 1350 forged steel pinion yoke with U-bolts
- Threaded jack bolt holes help simplify center section removal
- Case includes mounting provisions for bolt-on accessories
- FN988 case is compatible with 8.8-inch gears, differentials, and spools
Installation Notes
The 070880-410DS-R FN988 center section is a universal component and is not assigned to a specific year, make, or model. FN988-specific axle shafts are required, and the driveshaft must be shortened for installation. Verify your complete rear axle and driveline configuration before ordering.
FAQs
What is different about the FN988 center section?
The FN988 is engineered to use Ford 8.8-inch gears within a Ford 9-inch housing. This combines the packaging advantages of the 9-inch housing with the quieter and more efficient operation of the 8.8-inch gear design.
What does the REM-polished gear option provide?
REM polishing creates a smoother gear surface designed to reduce friction and heat while improving oil retention. This treatment can contribute to quieter operation and increased component life.
What differential and gear ratio come with 070880-410DS-R?
This assembled FN988 center section includes a 31-spline Eaton Truetrac differential with a 4.10 gear ratio.
Why Buy from Beefcake Racing?
Beefcake Racing is your source for proven performance drivetrain, suspension, and chassis components for street, strip, autocross, and track builds. Our experienced team can help you match the right rear axle components to your specific combination. Have questions about the Detroit Speed FN988 or your drivetrain setup? Email sales@beefcakeracing.com or call 1-855-827-7223 for assistance.
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