Incl. 6x externally splined Carbonite single side friction plates 6x internally splined Carbonite single side friction plates 1x double side Carbonite friction plate. Complete Carboniter PowerPackr Maximum Effort clutch kits with friction & steel plates. Developed to handle the power and torque of Big Inch / High-Performance engines on the streets today. This Carbonite clutch kit features an extra friction plate and steel drive plate which increases the clutch area for greater holding. The friction plates are lined with 3M carbon based material which is capable of withstanding higher temperatures offers a higher coefficient of friction than anything else available today. The steel drive plates are Performance SteelT which have a surface Ra value (Roughness average) of just 2-10 micro inches. Regular steels have an Ra value between 15 to 25 micro Inches. A microscope will show you less peaks and valleys on Altos Performance SteelT. This will improve performance durability engagement and offer a longer life and cooler running.