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2 SFI Approved and will withstand the extreme power and rpm of your performance application
Speedmaster alternator pulleys are manufactured from quality materials to ensure strength and durability
but have profiled counterweights for less weight
providing competition engine builders with the most accurate valvetrain components available today
It is highly recommended for competition applications
150 lbs./in. Spring Rate 10" Tall Coil Over Shock Springs - Black (Pair) 2 SFI Approved and willSpeedmaster 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.
