Axles - Differentials | 2004.5-2007 Ram 5.9 Cummins

Dynatrac Free Spin Heavy Duty Front Hub Conversion Kit 03-08 Dodge Ram 2500 / 3500 DYN-CR60-3X1104-A-main 0.00

Dynatrac CR60-3X1104-A

Dynatrac Free Spin Heavy Duty Front Hub Conversion Kit 03-08 Dodge Ram 2500 / 3500 $ 1871.7 2050-01-01

Diesel Power Products carries the Dynatrac Free Spin Heavy Duty Front Hub Conversion Kit for 2003-2008 Dodge Ram 5.9L / 6.7L Cummins Yukon Gear & Axle GM & Dodge 11.5" Ring and Pinion YUK-YG_GM115-373-Main 0.00

Yukon Gear & Axle YG GM11.5-373

Yukon Gear & Axle GM & Dodge 11.5" Ring and Pinion $ 517.51 2050-01-01

Looking to upgrade your AAM 11.5" ring and pinon to keep your truck performing with bigger tires? Grab this Yukon Ring and Pinon and be amazed with the quality and durability! Yukon Master Overhaul Kit Chrylser 9.25" Front Differential 03-18 Ram 2500 / 3500 YUK-YK_C925-F 9.00

Yukon Gear & Axle YK C9.25-F

Yukon Master Overhaul Kit Chrylser 9.25" Front Differential 03-18 Ram 2500 / 3500 $ 415.11 2050-01-01

Power Products carries the Yukon Master Overhaul Kit Chrylser 9.25" Front differential Yukon Master Overhaul Kit for 11.5" Differential 03-10 Ram HD / 01-10 GM and Dodge 11.5" YUK-YK_GM115 11.56

Yukon Gear & Axle YK GM11.5

Yukon Master Overhaul Kit for 11.5" Differential 03-10 Ram HD / 01-10 GM and Dodge 11.5" $ 593.51 2050-01-01

Power Products carries the Yukon Master Overhaul Kit for GM and Dodge 11.5" differential Yukon Gear & Axle Chrysler 9.25" Front Ring and Pinion 03-18 Ram HD YUK-YG_C925R-Main 0.00

Yukon Gear & Axle YG C9.25R-373R

Yukon Gear & Axle Chrysler 9.25" Front Ring and Pinion 03-18 Ram HD $ 416.71 2050-01-01

Power Products carries the Yukon Gear & Axle Chrysler 9.25" Front Yukon 30 Spline Axle Shaft AAM 11.5 03-12 Ram HD SRW YUK-YA_C115-30-40 20.30

Yukon Gear & Axle YA C11.5-30-40

Yukon 30 Spline Axle Shaft AAM 11.5 03-12 Ram HD SRW $ 228.71 2050-01-01

Power Products carries the Yukon AAM/DODGE 11.5 REAR Full Float AXLE SHAFT SRW Yukon Grizzly Locker AAM 11.5" Rear 30 Spline Dodge YUK-YGLGM115-30 43.43

Yukon Gear & Axle YGLGM11.5-30

Yukon Grizzly Locker AAM 11.5" Rear 30 Spline Dodge $ 1279.91 2050-01-01

Power Products carries the Yukon Grizzly Locker - Dodge / GM AAM 11.5" Rear 30 Spline Spyntec Shorty Hub Conversion Kit 00-09 Dodge Ram 2500 / 3500 SAST-D0008S-Main 0.00

SpynTec Industries SAST-D0008S

Spyntec Shorty Hub Conversion Kit 00-09 Dodge Ram 2500 / 3500 $ 1700 2050-01-01

Better fuel economy, less wear and tear, strength....that's all what you can expect from installing a Spyntec Hub Conversion Kit on your 2000-2009 Dodge Ram! Yukon Spin Free Locking Hub Conversion Kit 00-09 Dodge HD SRW Dana 60 and AAM YUK-YA_WU-Main 0.00

Yukon Gear & Axle YA WU-04

Yukon Spin Free Locking Hub Conversion Kit 00-09 Dodge HD SRW Dana 60 and AAM $ 2159.91 2050-01-01

Have the reliability and fuel economy gains from manual locking hubs with a Yukon Spin Free Kit for your 2000-2009 Ram HD. Yukon Spin Free Locking Hub Conversion Kit 00-08 Dodge HD DRW Dana 60 and AAM YUK-YA_WU-05 85.00

Yukon Gear & Axle YA WU-05

Yukon Spin Free Locking Hub Conversion Kit 00-08 Dodge HD DRW Dana 60 and AAM $ 2199.91 2050-01-01

Have the reliability and fuel economy gains from manual locking hubs with a Yukon Spin Free Kit for your 2000-2008 Ram Dually. ARB On-Board High Performance 12 Volt Air Compressor ARB-CKSA12 8.00

ARB CKSA12

ARB On-Board High Performance 12 Volt Air Compressor $ 241 2050-01-01

This permanently mounted air compressor is specifically designed to be used with the installation of ARB Air Lockers. This kit comes complete with a full wiring loom with air locker solenoid plug in contact, mounting hardware with reinforcing bracket, and a quality compressor isolating switch. ARB CKMA12 On-Board High Performance 12 Volt Air Compressor ARB-CKMA12 12.00

ARB CKMA12

ARB CKMA12 On-Board High Performance 12 Volt Air Compressor $ 304.2 2050-01-01

The ARB Heavy Duty Compressor is a life saver by delivering available air on tap whenever you need it.

Description

Beginning in model year 2003, Ram went away from Dana as their axle supplier and moved to AAM, American Axle Manufacturing, which had already been adopted by GM for use in their heavy duty applications. Up front, Ram's are treated with a 9.25", while the rear receives an 11.5". From the factory, these housings were stuffed with either the popular 3.73 ratio, or the 4.10 most commonly used for heavy duty towing, as it delivers higher RPM's at lower speeds in comparison to the 3.73 ratio.

Over the years, these assemblies have proven themselves relatively reliable on moderately used trucks running stock, or close to stock tire size and power output. For those of us that demand substantial power increases and larger tires, there is room for improvement to improve the reliability and performance that they can afford. One of the best upgrades we can recommend for anyone that has increased tire size, is that of a ring and pinion ratio upgrade. As previously stated, most of these trucks came factory with a 3.73 ratio, designed to have a proper run out with a stock size tire (roughly 31"). But as soon as you upgrade to a 35" or larger tire, all of a sudden your RPM vs. speed are effected, even causing a disruption of the shift pattern on automatic transmission equipped trucks.

Lets give the example of upgrading to a 37" tire. By using cross multiplication, we can determine that in order to have the same RPM vs. speed as with the factory tire size, you would want to install a 4.45 gear ratio (3.73/31*37). Unfortunately, in this scenario there is no such thing as a 4.45 ratio, but the closest would be a 4.56 that is readily available. Or, you can also opt to go with a slightly higher ratio of 4.10 that would give you a lower RPM vs. speed compared to stock.

Besides replacing the ring and pinion, we also offer numerous other upgrades, such as ARB Air Lockers, larger axles, rebuild kits, axle trusses for those that like to get airborn, and so much more. As always, if you have any questions about which product is right for you and your truck don't hesitate to give us a call and we would be happy to help.

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