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Yukon Gear YP PC11.5-HELIC is a helical gear limited-slip differential for GM and Chrysler 11.5-inch AAM axles with 30-spline axle shafts. Unlike a traditional clutch-type positraction, this differential uses floating helical-cut gears to transfer torque between the axle shafts, providing progressive limited-slip operation without clutch discs that wear and require periodic replacement.
When acceleration or wheel slip creates a difference in traction, the internal helical gears work to bias torque toward the tire with better grip while reducing torque sent to the slipping wheel. The result is smooth, automatic torque transfer without the abrupt engagement associated with some locking differential designs.
Because torque transfer is handled through gears rather than friction clutch packs, this Yukon helical LSD is an attractive upgrade for trucks that see towing, street use, performance driving, work duty, or changing traction conditions. The gear-driven design also eliminates the clutch-pack maintenance found in conventional clutch-type limited-slip differentials.
The YP PC11.5-HELIC is supplied assembled with a steel differential case and is designed for 30-spline, full-floating GM and Chrysler 11.5-inch AAM axle applications. It accepts a 12-bolt ring gear and is listed for all gear ratios.
Key Features & Specs:
Product Type: Helical gear limited-slip differential
Differential: GM / Chrysler 11.5"
Differential Brand: AAM
Axle Spline Count: 30-spline
Axle Type: Full-floating
Limited-Slip Design: Helical gear / worm gear
Ring Gear Bolt Count: 12
Gear Ratio Compatibility: All ratios
Case Included: Yes
Assembled: Yes
Material: Steel
Heat Treated: Yes
Clutch Packs: None
Brand: Yukon Gear & Axle
Part Number: YP PC11.5-HELIC
UPC: 883584322443
Proxy Number: 32244
Fitment:
GM / AAM 11.5" differential
Chrysler / AAM 11.5" differential
30-spline full-floating axle applications
Select 2001-2019 Chevrolet Silverado 2500 / 2500 HD applications
Select 2001-2019 Chevrolet Silverado 3500 / 3500 HD applications
Select 2001-2019 GMC Sierra 2500 / 2500 HD applications
Select 2001-2019 GMC Sierra 3500 / 3500 HD applications
Select 2003-2010 Dodge Ram 2500 and Ram 3500 applications
Select 2011-2019 Ram 2500 applications
Select 2011-2016 Ram 3500 applications
About Yukon Gear Helical Limited-Slip Differentials:
Yukon Gear helical limited-slip differentials use gear-driven torque biasing rather than traditional friction clutch packs. Floating helical-cut gears react to changes in wheel speed and traction, progressively transferring torque toward the wheel with better grip while continuing to allow normal differential action during everyday driving. With no clutch discs to wear out or periodically replace, the design offers a low-maintenance limited-slip solution for street trucks, tow vehicles, work applications, and performance builds where smooth and automatic traction control is preferred.
