2004.5-2005 GM Duramax 6.6L LLY Rear Gears

Adding larger tires to your GM Sierra or Silverado can cause a loss in both power delivery and acceleration, leaving a lot to be desired when it comes to your performance applications. Gain back some of the performance and acceleration lost by adding more aggressive rear-end ring-and-pinion gears to your rig. Shorter gears can also give your GM 2500/3500 back the final drive ratio lost from adding larger tires, delivering the performance needed for every application. Higher gears are perfect for aggressive performance modifications used on dedicated off-road builds. GM Duramax Fitments: 2004, 2005 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.