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Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Aggressive Design

SKU: YUKYDGF9-31-AG

Limited Slip Differential Assembly

YUK Trac-Loc...

Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Aggressive Design

SKU: YUKYDGF9-31-AG

Limited Slip Differential Assembly

YUK Trac-Loc...

A$896.67
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Description

Differential Carrier - Trac-Loc Posi - Aggressive - 31 Spline - Steel - Ford 9 in - Each

Yukon Gear Trac Loc For Ford 9in With 31 Spline Axles. Aggressive Design

Yukon Dura Grip is a positraction limited slip differential that provides smooth yet aggressive traction, giving you the confidence and performance you need across a wide variety of terrains. The Dura Grip is engineered for long life and is completely rebuildable. Dura Grips are constructed with a high strength nodular case, forged 4320 chromoly spider gears, and composite clutches. For unmatched positraction performance, the Dura Grip is the ultimate choice. When your vehicle demands performance, durability and strength, choose Yukon Dura Grip.

Additional Information

9in. Ford Yukon Trac-Loc with 31 Spline; Limited Slip Aggressive Design-4 Preload Springs; 4 Pinion Design

Part Type

Limited Slip Differential Assembly

Additional Application Notes
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter 9 in.; Race; 31 Spline; Requires Tr
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer Trac-Loc Bolts; 1.78 in. Bearing Journals 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter~Yukon Dura Grip; Ford 9 in. Rear; 31 Spline; Limited Slip; 4 Spring Aggressive Setup; May Chatter; Requires Longer
• Ford 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter 9 in.; Race; 31 Spline; Requires Trac-Loc Bolts/Yukon Master Overhaul Kit; Will Chatter

These additional application notes are supplied by the manufacturer and collated from multiple year ranges. Not all of these notes may apply to every year or every variant. Please contact a StreetFX agent for clarification if required.

Data: v4.2 - Upd: 2026-11-08 14:41:08

Features

  • 4 Pinion Design
  • Aggressive design
  • All units are backed by extensive product testing and state-of-the-art software design
  • Fits 9 in. Ford w/31 Spline Axles
  • Fits 9" Ford with 31 Spline Axles
  • Fits all Gear Ratios
  • Fully rebuildable design and proudly assembled in the USA
  • Gears are cut to provide the strongest teeth possible in any terrain
  • Limited Slip Differential w/Composite Clutches
  • Limited Slip Differential with Composite Clutches
  • Yukon Dura Grips feature 4320 chromoly spider gears for ultimate durability

Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.

Specifications

Product Details

AAP Selling Package Quantity UOM:EA
Package UOMEA
Package Qty1
Assembled:Yes
Axle Shaft Spline Quantity:31
Axle Type:semi Floating
Bolt Hole Quantity:10
Case Included:Yes
Description:9in. Ford Trac-Loc with 31 Spline; Limited Slip; Aggressive-4 Preload Springs
Differential Brand:FORD
Gear Ratio:All
Heat Treated:Yes
Material:Steel
Part Number:yukYDGF9-31-AG
Title:9" Ford Trac-Loc with 31 Spline; Limited Slip; Aggressive - 4 Preload Springs
Type:Limited Slip Positraction

Product Downloads

# Document Type Download
1. Installation Instructions

Installation guides, warranty details, and other supporting documents are provided by the supplier. In some cases, these files may originate from regions outside your locale, meaning instructions, warranty procedures, and images may not fully align with your specific vehicle or region (e.g., LHD vs. RHD differences, return policies, etc.). If you need clarification, please contact a StreetFX support agent.

Data: v2 - Desc: v4.2 - Upd: 2026-11-08 09:01:29

Reference Information

Reference Data (Provide these details to our support team)
Brand Name/s Yukon Gear & Axle, YUKON GEAR AND AXLE, Yukon Gear And Axle (randys)
StreetFX SKU yukYDGF9-31-AG
SFX Item ID 4489079
Accounting SKU yuk-YDGF9-31-AG
Manufacturer SKU YDGF9-31-AG
Manufacturer UPC 883584260097
Alternative References YDGF9-31-AG, YKNYDGF9-31-AG

Compatibility

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