2004.5-2005 GM Duramax 6.6L LLY Front Gears
Adding larger tire/wheel combinations to your GM Sierra or Silverado is simple, but gaining back the lost performance and acceleration can be difficult after you change your final drive ratio. These premium 2004.5-2005 GM 6.6L Duramax LLY front ring-and-pinion gears help you win back the performance you once had when installing larger tires over stock. Shorter gears give your GM 2500/3500 improved acceleration and torque delivery which can seriously give your rig a boost on and off-road. 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.