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Coil Spring Placement

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5. Say hello to Roadmaster Active Suspension. The basic concept here is that by placing a coil spring in tension between the axle centerline and the rear eye of the spring pack, you effectively increase the leaf-spring rate, thus enabling it to carry greater loads. The system is bolt-on and pretty simple to install with basic handtools. Roadmaster admits the system isn't going to increase wheel articulation, and subsequently they don't recommend the setup for vehicles that are primarily used as trail rigs, but when it comes to improving load capacity, there isn't a simpler way to go.