2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Gear Packages

Upgrading the gears on your 2001-2004 GM 6.6L Duramax is the perfect solution to gain back lost power after upgrading to larger wheels and tires. We carry a complete selection of complete gear packages for the GM Sierra/Silverado 2500HD3500HD that come with front and rear ring-and-pinion gears, install kits, and even differentials so you truck gets everything it needs to win back the performance it lost by adding larger tires. Give your GM better acceleration and torque delivery to all four tires with any of these premium total gear packages from your friends here at Alligator Performance! Pair your new gears with our selection of Wheels & Tires! GM Duramax Fitments: 2001, 2002, 2003, 2004 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.