Enhance airflow to your LBZ for better performance and throttle response.
Unlock horsepower and torque with advanced tuning solutions.
Maintain consistent fuel delivery with upgraded pumps and injectors.
Achieve a balanced stance and reduce front-end sag.
Gain ground clearance for larger tires and off-road adventures.
Welcome to The Garage – your one-stop shop for all your car care and maintenance needs. From premium oils and filters to top-notch car care products, we have everything you need to keep your vehicle running smoothly and looking its best. Whether you're a DIY enthusiast or a professional mechanic, our carefully curated selection of high-quality products will help you take care of your ride like never before.
Your heavy-duty Duramax 2500HD/3500HD LBZ is made to handle anything you can throw at it, however, it could use some help achieving that lofty goal. Our high-quality components at Alligator Performance offer your truck more power, capability and utility. We have everything you and Duramax LBZ HD Sierra or HD Silverado needs to get huge levels of power, better off-road capability, better cargo capacity, and so much more. We carry a ton of Duramax LBZ engine upgrades that enhance power, torque and reliability to your GM 2500/3500 build in almost no time at all. Our selection of tonneau covers will give your Silverado or Sierra bed security and a sleek look that cleans up the look of your Duramax build. We offer efficient and bright lighting upgrades that give your truck a great look and improve its visibility on both the street and the trail. Adding some 2500HD/3500HD exterior upgrades will give your truck an aggressive stance while adding much needed usability! Aftermarket Duramax bumpers provide excellent protection and utility to your tough Duramax build while opening the door to mount a recovery winch. GM Duramax Fitments: 2006, 2007 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.
One of the first upgrades most people make when they start modifying their Duramax LBZs is power. Our selection of Duramax LBZ Engine Upgrades can get your HD Sierra or HD Silverado build massive amounts of horsepower and torque in practically no time at all. Our engine upgrades for LBZ Duramax builds can make your tough truck feel like an entirely new vehicle with increased power, improved response, and better efficiency. One of the most cost-effective ways to add huge power to your 2500 or 3500 is with a Duramax LBZ Tuner or Monitor. These tuning devices contain new engine management software that replace the OEM software in your Duramax's ECM. The new, aftermarket software increases boost pressure, adjust fueling, and change transmission function so that your Duramax-powered Silverado or Sierra gets huge horsepower and torque gains along with better shifting and gear holding. One of our most popular Duramax LBZ tuners is the Edge CTS3 Tuner that not only adds huge power with its tunes, but also features a large, easy-to-use color touchscreen display that makes it one of the most useful and effective monitors on the market.
Even though tuning is an effective way to make big power, performance tuners are on the pricey side of things and some devices can put a strain on your motor. If you're looking for something either less pricey or not as potent, then check out our selection of Duramax LBZ Cold Air Intakes. An aftermarket cold air intake gives your Silverado or Sierra improved airflow over the stock air box, giving your truck a nice bump in performance. These intake kits provide a larger volume of charge air at cooler temperatures and higher velocities than the stock air box and paper filter which gives your truck a bump in horsepower, torque, and throttle response. Cold air intakes are incredibly easy to install, making them a hassle-free way to get your Duramax better performance. One of our most popular intakes is the Duramax LBZ S&B Oiled Intake Kit. S&B's intake completely replaces the factory intake system and includes a new air filter, air box, and inlet tubing that are more efficient than stock. The S&B intake features a high-quality construction and efficient design all in a kit that won't break your bank.
One of the big issues with a bone-stock LBZ HD 2500/3500 is the factory rake the suspension offers. If you're trying to get rid of your trucks rake while opening the door for larger tires, then a Duramax LBZ leveling kit is one of your best ways to do it. Our leveling kits for Duramax trucks add just enough front ride height to give your Silverado or Sierra a clean, mean, and leveled look along with the ability to fit bigger wheel and tire combinations onto your truck. We have leveling kits fit for any budget or application, including basic torsion key kits to high-performance suspension packages that can give your Duramax improved on-road handling and stunning levels of off-road performance. One of our most popular leveling kits is the Duramax LBZ Kryptonite Stage 3 Leveling Kit with Bilstein Shocks. The Kryptonite leveling kit provides up to 2" of front leveling with a set of torsion keys, but also includes a set of high-strength control arms and a full set of Bilstein 5100s that give your Duramax LBZ build better handling on the street and more capability out on the trail.
If you're going to squeeze on massive tires on your Duramax LBZ, you're going to need more ride height than what a typical leveling kit can provide. Our selection of Duramax LBZ lift kits give your awesome HD Silverado or HD Sierra build a big, bad look that is sure to turn some heads while also giving you the clearance to fit some seriously big tires onto your GM 2500 or GM 3500. We have a huge selection of lift kits in a variety of lift heights, styles, and features so that you can find both the perfect amount of height and capability for your Duramax LBZ. All of these lift kits give you both more front and rear ride height and come with everything you need to get them up and running on your truck. One of our favorite lift kits for the Duramax LBZs is the Zone Base 6" Lift Kit. Zone's lift kit adds a full 6" of front lift and 5" of rear lift which gives your Sierra or Silverado a ton of ride height and preserves some rake so that your towing and hauling isn't overly hurt by your truck's new ride height. The lift kit comes with new compression struts and a full set of Zone shocks that provide a clean ride and are long enough to handle the ride height.
Adding bigger and more aggressive wheels and tires to your Duramax is the best way to give your LBZ Sierra or Silverado the toughest and most aggressive look around, all while improving off-road capability by far! Our selection of Duramax LBZ wheels and tires can completely change up your truck's looks in a big way. Our Duramax LBZ 17" wheels, Duramax 18" wheels, and Duramax 20" wheels are available in a whole ton of different widths, offsets, backspacings, styles, designs, and finishes so that you can find the perfect set of your wheels for your awesome Duramax LBZ build. As for tires, we have more than a few Duramax LBZ 35" tires and Duramax LBZ 37" tires that give your GM 2500HD/3500HD a big look, more ground clearance, and improved traction. These tires are an awesome addition to practically any Duramax, but you'll need to make sure to have a level or lift in order to clear them. We have a variety of Duramax all-terrain tires, Duramax hybrid tires, and Duramax mud-terrain tires so that you can find the perfect combination of ride quality and traction for your Duramax LBZ build.
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