The (usually) six springs in the back of clutch basket are there as a spring drive. When the engine fires, its torque compresses the six springs, somewhat smoothing out the torque going to the gearbox. When in 1994 Harley began racing their VR1000 Superbike, they were told by their clutch supplier that a spring drive would probably not be necessary, as Yoshimura didn’t use one in their race bikes at the time. When practice started, things began breaking. Could it be that two great big cylinders produce larger whacks of torque than four smaller ones? (In those days, twins got 1000-cc displacement and fours, which could rev much higher, got only 750). I walked past the Harley garage about then and saw that everyone inside was on one of the new-fangled cellphones, trying to get answers. So yes, that end-to-end circle of springs in the clutch is there for good reason.