DSE GM 12-Bolt Differential Assembly - 4.10 Ratio - 30-Spline TrueTrac - 91-10004
Put a performance-focused gear ratio and proven limited-slip differential into your GM 12-bolt rear axle with the Detroit Speed 91-10004. This rear differential assembly combines a 4.10 gear ratio with a 30-spline TrueTrac, making it an excellent choice for compatible performance builds that call for numerically higher final-drive gearing and gear-driven limited-slip operation.
The 4.10 ratio makes the 91-10004 particularly relevant for performance combinations where stronger torque multiplication through the rear axle is desired. Final gearing should always be selected as part of the complete vehicle combination, including transmission ratios, tire diameter, engine operating range and intended use. The 30-spline configuration also makes axle compatibility an important consideration when planning your GM 12-bolt build.
Specifications
- Part Number: 91-10004
- Manufacturer: Detroit Speed
- Rear Axle Type: GM 12-Bolt
- Gear Ratio: 4.10
- Axle Spline Count: 30-Spline
- Differential: TrueTrac
- Emission Code: 4
Features
- Designed for compatible GM 12-bolt rear axle applications
- 4.10 final-drive ratio for performance-oriented gearing combinations
- 30-spline configuration for use with compatible 30-spline axles
- TrueTrac limited-slip differential
- Gear-driven limited-slip design without conventional friction clutch packs
- Performance-focused combination for GM 12-bolt rear axle builds requiring 4.10 gearing
Fitment
- GM 12-Bolt Rear Axle Applications
- Applications Using Compatible 30-Spline Axles
Fitment Notes
Detroit Speed identifies part number 91-10004 as a GM 12-bolt assembly with a 4.10 gear ratio, 30-spline configuration and TrueTrac differential. Confirm your rear axle type and axle spline count before ordering. Transmission gearing, tire diameter, engine operating range and intended vehicle use should also be considered when determining whether a 4.10 final-drive ratio is appropriate for your combination.
FAQs
What gear ratio does the DSE 91-10004 use?
The Detroit Speed 91-10004 uses a 4.10 final-drive ratio. This numerically higher ratio should be matched appropriately to the vehicle's transmission gearing, tire diameter, engine combination and intended use.
What differential does the DSE 91-10004 use?
Detroit Speed specifies a TrueTrac differential for the 91-10004. The TrueTrac design uses gears rather than conventional friction clutch packs for limited-slip operation.
What axle spline count is the DSE 91-10004 designed for?
The 91-10004 is a 30-spline configuration. Verify that your GM 12-bolt rear axle uses compatible 30-spline axles before ordering.
Get Your Detroit Speed Components from Beefcake Racing
Upgrade your GM 12-bolt rear axle with the Detroit Speed 91-10004 featuring 4.10 gearing and a 30-spline TrueTrac from Beefcake Racing. For help confirming rear axle, spline or gearing compatibility for your build, email sales@beefcakeracing.com or call 1-855-827-7223.
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