These heavy duty Clutch Springs have a slightly softer clutch pull feel at the lever, and are made from the new high-tech spring wire which has a higher temperature operating range. These help the clutch plates hook up better than stock and will never lose their length.  These clutch springs have an operating range of over 200 degrees F higher than the best OEM spring.  Engineered with the lowest possible spring rate, for a smooth pull and a positive engagement.