The Doepker Booster extends axle spread and redistributes load weight across heavy haul combinations, enabling higher permit thresholds on over-dimensional moves. It is built around an adjustable front with an adaptor core that accepts interchangeable modular heads, so one booster connects to multiple trailer configurations — rear spare flush-back, rear beavertail and other heavy haul models. Common air connections and claw heads are standard, on full air ride with the same oven-cured pure zinc finish as every Doepker product.