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Dominator Series Transmissions The Dominator Series Transmissions from Dan’s Diesel Performance are built to handle serious power while delivering unmatched reliability. Designed for Duramax-powered trucks, each Dominator build features upgraded clutches, billet components, precision machining, and proven tuning strategies to ensure your Allison transmission performs under the most demanding conditions. Whether you’re towing heavy loads, daily driving, or chasing horsepower at the track, the Dominator lineup has a transmission tailored to your needs—from street-ready builds to competition-proven 1,000HP+ setups. Every unit is assembled in-house by experienced technicians and tested to meet DDP’s high standards for strength and performance. Backed by our reputation for quality and durability, the Dominator Series is the ultimate upgrade for enthusiasts who refuse to compromise.