2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ Complete Transmissions

The legendary Duramax LBZ V8 under the hood of your 2006-2007 Silverado or Sierra HD is more than capable of churning out a whole bunch of extra horsepower and torque with relatively few modifications, but that doesn't mean your factory transmission can handle it all. Tier One's built transmissions for 2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ trucks are designed from the ground up to handle even the most extreme high-horsepower Duramax LBZ builds so that you can stack on powerful tuning, bigger turbos, oversized injectors, and anything else on your aggressive Duramax LBZ without your transmission letting you down. We here at Tier One offer a variety of built Duramax LBZ transmission options that range from our budget-friendly HD Tow transmissions that are perfect for heavy towing at near-stock levels of power all the way to all-out competition Duramax LBZ transmission that will let you launch hard at the track and crush your opponents. Make sure you also check out our 2006-2007 Duramax LBZ Transmission Kits or our 2006-2007 Duramax LBZ Transmission Coolers!