SKU: YG GM11.5-456 | UPC: 883584244431
Yukon Gear High Performance Gear Set For GM 11.5in 4.56 Ratio Fits 2001-2016 Chevy GMC Ram 2500/3500 HD Trucks
Upgrade your GM 11.5" 14-bolt rear axle with the Yukon Gear YG GM11.5-456 high performance ring and pinion gear set in 4.56 ratio. Designed for 2001-2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD trucks plus select Dodge/Ram 2500/3500 models, this set handles high horsepower, big tires and long races with reduced friction and heat. Engineered to OEM specifications using high-grade 8620 steel for precise fit and lasting strength in demanding conditions.
Key Features
- Precision Gear Design – State-of-the-art engineering and in-house testing ensure exact specifications for smooth operation.
- Advanced Surface Finish – Gear teeth minimize friction and heat buildup during high torque and extended use.
- High-Grade 8620 Steel – Ring and pinion constructed from premium alloy, 32-spline pinion for durability.
- OEM Fitment – Direct replacement for GM 11.5" semi-floating 14-bolt axles without modifications.
- 39/8 Ring/Pinion Teeth – True 4.56 ratio restores power delivery for oversized tires and performance builds.
- High Volume Design – Optimized for better lubrication under extreme loads.
Specifications
| Detail | Value |
|---|---|
| Brand | Yukon Gear & Axle |
| Type | Ring & Pinion Gear Set |
| Ratio | 4.56 (39/8 teeth) |
| Axle Model | GM 11.5" 14-Bolt Semi-Float |
| MPN | YG GM11.5-456 |
| Shipping Weight | 27.85 lbs |
| Box Dimensions | 20.5 x 20.5 x 7.25 inches |
| Country of Origin | USA Designed / Imported Components |
| Warranty | 1 Year Manufacturer Defects + Optional Y.E.S. Lifetime Plan |
Whats Included
- 4.56 Ratio Ring Gear (39 teeth)
- 4.56 Ratio Pinion Gear (8 teeth, 32 spline)
- Pinion Nut
Product Notes
- Professional installation recommended. master bearing/install kit required (sold separately).
- Follow Yukon break-in procedure: 500 easy miles synthetic gear oil with friction modifier.
- Compatible with factory carriers. 3.73 & numerically lower gears only.
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 | Base, LS, LT. 2004 WT |
| 2001-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2001-2006 | Chevrolet | Silverado 2500 HD | LS |
| 2001-2015 | Chevrolet | Silverado 2500 HD | LT |
| 2007-2015 | Chevrolet | Silverado 2500 HD | LTZ. 2015 High Country |
| 2003-2015 | Chevrolet | Silverado 2500 HD | WT |
| 2001-2005 | Chevrolet | Silverado 3500 | Base |
| 2001-2006 | Chevrolet | Silverado 3500 | LS, LT |
| 2004,2006 | Chevrolet | Silverado 3500 | WT |
| 2007 | Chevrolet | Silverado 3500 Classic | LS, LT, WT |
| 2015 | Chevrolet | Silverado 3500 HD | High Country |
| 2007-2015 | Chevrolet | Silverado 3500 HD | LT, LTZ, WT |
| 2003,2005-2010 | Dodge | Ram 2500 | Laramie |
| 2003-2010 | Dodge | Ram 2500 | SLT, ST |
| 2006-2010 | Dodge | Ram 2500 | Power Wagon |
| 2006-2007 | Dodge | Ram 2500 | Sport |
| 2008-2010 | Dodge | Ram 2500 | SXT |
| 2010 | Dodge | Ram 2500 | TRX |
| 2006-2007 | Dodge | Ram 2500 | TRX4 |
| 2003 | Dodge | Ram 2500 Van | Base |
| 2003-2010 | Dodge | Ram 3500 | Laramie, SLT, ST |
| 2006-2007 | Dodge | Ram 3500 | Sport |
| 2008-2010 | Dodge | Ram 3500 | SXT |
| 2007 | Dodge | Ram 3500 | TRX4 |
| 2001-2004 | GMC | Sierra 2500 | Base, SLE, SLT. 2003-2004 WT. 2001-2002 SL |
| 2002-2005,2015 | GMC | Sierra 2500 HD | Base |
| 2001-2015 | GMC | Sierra 2500 HD | SLE, SLT |
| 2011-2015 | GMC | Sierra 2500 HD | Denali |
| 2001-2002,2006 | GMC | Sierra 2500 HD | SL |
| 2003-2014 | GMC | Sierra 2500 HD | WT |
| 2007 | GMC | Sierra 2500 HD Classic | SL, SLE, SLT, WT |
| 2001-2006 | GMC | Sierra 3500 | SLE, SLT. 2002-2005 Base. 2001-2002,2006 SL. 2004-2006 WT |
| 2007 | GMC | Sierra 3500 Classic | SL, SLE, SLT, WT |
| 2015 | GMC | Sierra 3500 HD | Base |
| 2011-2015 | GMC | Sierra 3500 HD | Denali |
| 2007-2015 | GMC | Sierra 3500 HD | SLE, SLT. 2007-2014 WT |
| 2013-2014 | Ram | 2500 | Big Horn, Lone Star, Tradesman |
| 2011-2014 | Ram | 2500 | Laramie, Laramie Longhorn, SLT. 2014 Laramie Limited. 2012-2014 Outdoorsman. 2011-2014 Power Wagon. 2011-2013 ST |
| 2013-2016 | Ram | 3500 | Big Horn |
| 2011-2016 | Ram | 3500 | Laramie, Laramie Longhorn, SLT |
| 2014-2015 | Ram | 3500 | Laramie Limited |
| 2016 | Ram | 3500 | Limited |
| 2013-2015 | Ram | 3500 | Lone Star |
| 2011-2013 | Ram | 3500 | ST |
| 2013-2016 | Ram | 3500 | Tradesman |
Why Choose Yukon Gear?
- Two in-house labs guarantee every gear meets strict quality controls.
- Handles extreme horsepower and tire sizes with low noise and heat.
- Widest gear ratio options available for custom builds.
- Proven reliability backed by 1-year warranty and lifetime Y.E.S. protection.
Frequently Asked Questions
- Q: What break-in process is required?
- A: Drive 500 easy miles using Yukon synthetic gear oil and friction modifier. change oil after.
- Q: Does this include bearings or install kit?
- A: No, ring & pinion only. purchase Yukon master kit YK GM11.5-MK for complete rebuild.
- Q: Will this fit my GM 11.5" axle?
- A: Yes, for 2001+ 2500/3500 HD semi-float 14-bolt with 3.73 & down carrier. verify spline count.
Shipping & Handling
- Method: UPS Ground / FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Securely boxed to prevent damage. 27.85 lbs, 20.5x20.5x7.25 inches
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