Yukon YG C9.25-390 Ring & Pinion 3.90 for 1994-10 Dodge Ram 1500 Dakota Durango

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Product Specification:

SKU:YUKYG C9.25-390

MPN: YG C9.25-390

UPC: 883584240143

Weight: 20.1 lb

Inventory: 2

Type: Final Drive Gears

Vehicle Fitment

1994-2010 Dodge Ram 1500 (2WD/4WD, All Engines)
1997-2010 Dodge Dakota (2WD/4WD, All Engines)
1998-2009 Dodge Durango (2WD/4WD, All Engines)
2001-2003 Dodge Ram 1500 Van (RWD, All Engines)
2001-2003 Dodge Ram 2500 Van (RWD, All Engines)
2001-2003 Dodge Ram 3500 Van (RWD, All Engines)
2007-2009 Chrysler Aspen (2WD/4WD, All Engines)
2006-2009 Mitsubishi Raider (2WD/4WD, All Engines)

Fitment Notes

Fits 2010 and earlier Chrysler 9.25" 12-bolt rear differential only - does not fit 2011 and newer Ram 1500 applications which use the redesigned ZF-style 9.25" with a different ring gear bolt pattern (see YG C9.25B-390B for 2011+ applications)
Verify differential by ring gear diameter (9.25"), cover bolt count (12), and pinion spline count (29) before ordering
Carrier break is at 2.71 and numerically higher - confirm your existing carrier case is compatible with the 3.90 ratio before ordering
Mitsubishi Raider shares the Chrysler 9.25" platform with the Dodge Dakota and uses the same axle internals

Features

High-performance ring and pinion engineered specifically for the 2010 and earlier Chrysler 9.25" 12-bolt rear differential
3.90 ratio delivers a strong balance of improved torque and towing capability while remaining practical for regular street use
Gear tooth surface finish optimized by Yukon engineers to reduce friction and heat under sustained high-torque driving conditions
Manufactured from high-grade steel with advanced heat-treating for long-term durability on and off road
Dimensioned to OEM specifications for accurate pinion depth, backlash, and contact pattern - clean and reliable setup
Standard rotation ring gear - direct replacement for factory Chrysler 9.25" rear axle applications through 2010
Backed by Yukon's Y.E.S. Plan - lifetime, no-questions-asked coverage for as long as you own the vehicle
Validated through Yukon's two in-house quality labs for metallurgical composition and dimensional accuracy

Specifications

Differential Application: Chrysler 9.25" Rear (2010 and earlier)
Gear Ratio: 3.90:1
Ring Gear Diameter: 9.25"
Pinion Spline Count: 29
Pinion Shaft Diameter: 1.876"
Ring Gear Bolts: 12 (7/16" x 20 LH thread)
Cover Bolts: 12
Carrier Break: 2.71 and numerically higher
Ring Gear Rotation: Standard
Axle Splines: 31
Position: Rear Differential

Included Components

1x High-Performance Ring Gear
1x High-Performance Pinion Gear

Product Description

The Yukon YG C9.25-390 is a high-performance ring and pinion gear set built for the 2010 and earlier Chrysler 9.25" 12-bolt rear differential in a 3.90:1 ratio. Compatible with Dodge Ram 1500, Dakota, Durango, Ram Vans, Chrysler Aspen, and Mitsubishi Raider models spanning 1994 through 2010, this gear set is an ideal re-gear choice for builders correcting ratio after a tire size upgrade or looking to improve towing and low-end torque performance. The 3.90 ratio provides meaningful torque improvement over stock ratios while remaining driveable on the highway - a practical choice for trucks and SUVs used in daily driving and moderate off-road or towing scenarios.

Yukon engineers the gear tooth surface finish to minimize friction and heat buildup, resulting in quieter operation and extended gear life under demanding conditions. Both the ring and pinion are produced from high-grade steel using advanced heat-treating processes, with all dimensions held to OEM tolerances for a clean contact pattern and straightforward installation. The 29-spline pinion and 12-bolt design make this a precise, application-specific fit for the pre-2011 Chrysler 9.25" rear axle.

It is critical to confirm your vehicle uses the pre-2011 Chrysler 9.25" rear - the 2011 and newer Ram 1500 uses a completely different ZF-design 9.25" axle with a different ring gear bolt pattern that is not compatible with this gear set. A matching master overhaul kit, crush sleeve, and bearings are sold separately and strongly recommended for a complete rebuild. All Yukon ring and pinion sets are covered under the Y.E.S. Plan, providing lifetime protection for as long as you own the vehicle.