Howe Coil-Over Spring Rubber - Hard, Blue, 20 Lb Rate H762427XL Four forehead intake vents

Four forehead intake vents

Threaded Nut Insert

velocity and efficiency in the design of this valve

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Howe Coil-Over Spring Rubber - Hard, Blue, 20 Lb Rate H762427XL Four forehead intake ventsMade to fit 2 1 2" diameter coil spring. For quick, precise spring rate changes. These spring rubbers are made for racing from a special Polyurethane that out lasts rubber 4 to 1. Maintains 95% of its rate at 180 degrees. Made in soft, medium and hard, the rates are proportionate to the spring rate. Howe Racing Enterprises began building and selling chassis and components in 1971 and since then we have produced countless innovative products and over