OTR Rear Two-Stage 7-Leaf Trailer Spring for Silver Eagle Dolly is a direct-fit replacement designed to restore specified rear suspension capacity and ride characteristics on Silver Eagle dollies. This multi-leaf, two-stage assembly features seven leaves arranged to provide staged support across the load range, with a nominal spring arch of 2.00 in and a 4.00 in leaf width. Each long and short end measures 19.25 in along the leaf surface and uses reverse/down-turned eye ends, matching the mounting geometry of many Silver Eagle rear dolly applications. The spring is rated with a spring capacity at pad of approximately 20,000 lb, engineered to support heavy trailer loads while maintaining axle location and suspension pack integrity. As a like-for-like replacement for worn, cracked, or overloaded springs, this assembly addresses common operational problems that cause increased maintenance time and uneven load distribution: it restores proper ride height and pack stiffness, reduces progressive sag under repeated loading, and helps preserve axle alignment to minimize premature tire and U-bolt wear. For fleet maintenance planners and shop technicians, the two-stage design provides broader serviceable range compared with single-rate springs, enabling predictable load response from light to heavy payloads and reducing the frequency of spring replacement cycles. Matching key dimensions and eye types simplifies installation and reduces vehicle downtime associated with fabrication or modification. Technical attributes”seven-leaf configuration, 2.00 in arch, 4.00 in width, 19.25 in end lengths, reverse eye ends, and approximately 20,000 lb capacity at pad”support confident selection for Silver Eagle dolly rear suspension restoration. Documentation and cross-reference listings identify this assembly as a common replacement for TRA-3403 family listings, enabling parts teams to align inventory with known service needs and reduce AOG exposure.