For years has worked very hard to set a new standard in performance clutch kits utilizing titanium springs. The springs and complete clutch kits worked perfectly but the price was hard to swallow due to the steep cost of titanium. To address the cost issue came up with a new spring material called Alloy. The new Alloy has a lot of the same characteristics as a titanium spring (with the exception of the weight loss) but at a fraction of the cost. These springs may be new to the consumer market, but has been testing these parts for over 4 years now!