copied from Tilton's web site;
The standard kit includes a Tilton 12.5 pound flywheel. This flywheel is NOT intended for street use, it is mainly race only, and very limited street use. It will make the car difficult to get moving from a stop, especially up inclines. It will require much more slippage to get moving from a dead stop than a heavier weighted flywheel, effectively killing your clutch life. It requires a much firmer grasp on manual transmission driving techniques to get a smooth shift than an OEM clutch assembly, though it is capable of faster shifting and rev matching. This is the flywheel of choice for road racing.
For ease of street use and MUCH improved clutch life, there is an option below to replace the above light flywheel with a Heavyweight flywheel that was designed by Viper Specialty & Tilton Engineering. This is a VSP Exclusive, and ONLY AVAILABLE HERE. The heavyweight flywheel weighs approximately 45 pounds, which will feel much more streetable. This flywheel retains 80% of the OEM flywheel and pressure plate assemblies MMOI, but with approximately 40% less weight (28 lb. Reduction). This is a wonderful combination as the flywheel will "feel" (Mass Moment Of Inertia) like a heavier flywheel than it actually is. You get the benefits of easy starting from the inertial increase, without the side effect of adding almost 30 pounds to the car. Overall, this option will feel very similar to an aluminum flywheel/OEM pressure plate combination, and also happens to be almost identical to the 2008 Viper flywheel's MMOI, but with about 2.5x the torque capacity.
Tilton makes very high quality products but I don't think this would work very well in the trucks. If you have the "right combination of gearing in the trans and rear end it would be fine.
At 6300.00, and 16 weeks to get, I don't think there is one in my future, I will stay with the McLeod dual disk kevlar.
Thanks Prof it is always great to see new stuff.
This type of clutch takes very little pedal travel to engauge or disengauge/ They are almost "in or out". Most multiple disk clutches are tricky to drive.