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Flows 1150 cfm
They feature aluminum construction and provide double rate cooling due to the double pass design
The forged output shaft from the Speedmaster planetary gear sets offer excellent torsion memory
Speedmaster crankshafts are nitride-hardened
CNC-machined from high-tensile billet steel for strength and precision
150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) Flows 1150 cfmSpeedmaster coil springs are designed to withstand the high stress levels of modern suspensions. They're manufactured from high quality chrome silicone steel, heat treated and shot peened, and then powdercoated or plated for protection and appearance.
