Speedwerx H5 Alloy Secondary Clutch Spring for Team Driven Clutches - Black/Purple CCH5-J-160-240High quality springs with the same performance as titanium springs at a fraction of the cost New material has a 30,000 to 40,000 PSI higher tensile strength than standard chrome silicon wire springs No rate loss over time which maintains efficient clutching for a better performing and more consistent spring New Dikem coating will not flake or chip over time like standard painted springs