2004.5-2005 Duramax LLY 2500 & 3500 Parts & Accessories

Your LLY Duramax Silverado or Sierra 2500 or 3500 still has plenty of life in it, and your friends right here at Tier One can help make your Duramax LLY feel like an entirely new truck. Tier One offers an extensive lineup of parts and accessories for 2004.5-2005 Duramax LLY trucks that will increase power, improve capability, and add a whole new look to your Silverado or Sierra all in one place. We here at Tier One have everything from our very own Duramax LLY built transmissions and transmission rebuild kits that can handle way more power than stock to bolt-on Duramax LLY performance upgrades like Duramax LLY tuners, Duramax LLY cold air intakes, Duramax LLY exhaust kits, GM 2500 & 3500 leveling kits, GM 2500 & 3500 lift kits, and a whole lot more. Tier One can give you everything you need to transform your LLY Duramax into a whole new and hyper-aggressive rig. Check out our built Allison transmissions or our built 4L80E transmissions. If you don't see something you're looking for, contact Tier One or call 602-399-5484!