COMET INDUSTRIES Clutch Spring - Pink by COMET INDUSTRIES All springs with a tension of over 100 pounds when compressed to 2 3/8in. are for racing applications and are sold without a guarantee of long life. Tension @ 1 1/8in. (lb.) - 142 Tension @ 2 3/8in. (lb.) - 45 Rate (lb./in.) - 92 Wire Diameter (in.) - .177