DSE GM 12-Bolt Differential Assembly - 3.55 Ratio - 30-Spline Eaton TrueTrac - 1350 Yoke - 91-10002
Build your GM 12-bolt rear end with a performance-focused combination of gearing, traction and proven components using the Detroit Speed 91-10002 Differential Assembly. This complete rear gear assembly pairs a versatile 3.55 gear ratio with a 30-spline Eaton TrueTrac differential and 1350 high-performance pinion yoke with U-bolts. It is a strong combination for performance street, restomod and Pro Touring builds where dependable limited-slip operation and a well-rounded final-drive ratio are priorities.
Detroit Speed builds its GM 12-bolt rear gear assemblies using championship-winning build procedures and close attention to detail. Every component is individually inspected and hand deburred for quality assurance. The 91-10002 uses premium components including ARP ring gear bolts, a premium ring and pinion, premium pinion seal, solid pinion preload spacer and TIMKEN bearings. The 1350 yoke is paired with the required U-joint bolt kit, and Detroit Speed includes the required hardware to complete the assembly.
Specifications
- Part Number: 91-10002
- Manufacturer: Detroit Speed
- Product Type: Differential Assembly
- Carrier Style: GM 12-Bolt
- Gear Ratio: 3.55
- Axle Shaft Spline Count: 30-Spline
- Differential: Eaton TrueTrac
- Yoke Style: 1350
- Yoke: High-Performance Pinion Yoke
- U-Joint Retention: U-Bolts / U-Joint Bolt Kit
- Ring Gear Bolts: ARP
- Ring and Pinion: Premium
- Pinion Seal: Premium
- Pinion Preload: Solid Spacer
- Bearings: TIMKEN
- Required Hardware: Included
- Emission Code: 4
Features
- Complete performance-oriented GM 12-bolt differential assembly
- 3.55 gear ratio provides versatile final-drive gearing for compatible performance builds
- 30-spline Eaton TrueTrac differential
- Gear-driven TrueTrac limited-slip design provides automatic torque biasing without conventional friction clutch packs
- 1350 high-performance pinion yoke with U-bolts
- ARP ring gear bolts
- Premium ring and pinion
- Premium pinion seal
- Solid pinion preload spacer
- TIMKEN bearings
- U-joint bolt kit included
- All required hardware included
- Components are individually inspected and hand deburred by Detroit Speed for quality assurance
Fitment
- GM 12-Bolt Rear Axle Applications
- Applications Using Compatible 30-Spline Axles
- Applications Using a Compatible 1350-Series Driveline Connection
Fitment Notes
Detroit Speed specifies part number 91-10002 as a GM 12-bolt differential assembly with a 3.55 gear ratio, 30-spline Eaton TrueTrac and 1350 yoke with U-bolts. Confirm rear axle type, axle spline count, driveshaft and U-joint compatibility for your specific build before ordering. Detroit Speed also offers REM isotropic surface finishing for the ring and pinion as an additional option.
FAQs
What gear ratio and differential does the DSE 91-10002 use?
The Detroit Speed 91-10002 combines a 3.55 gear ratio with a 30-spline Eaton TrueTrac differential, providing gear-driven limited-slip operation for compatible GM 12-bolt rear axle applications.
What yoke is included with the DSE 91-10002?
Detroit Speed specifies a high-performance 1350 pinion yoke with U-bolts. A U-joint bolt kit is also included.
What internal components are included in the DSE 91-10002?
Detroit Speed specifies ARP ring gear bolts, a premium ring and pinion, premium pinion seal, solid pinion preload spacer and TIMKEN bearings. The manufacturer also states that all required hardware is included.
Get Your Detroit Speed Components from Beefcake Racing
Build your GM 12-bolt rear end with the Detroit Speed 91-10002 Differential Assembly featuring 3.55 gearing, a 30-spline Eaton TrueTrac and 1350 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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