South Bend Clutches Listed here have several different pressure plate and clutch disk friction options available.  Here is a quick rundown of the notations for each pressure plate and friction material:

Pressure plate type:

• HD-Series (1900#)
• SS-Series (2200#)
• Custom SS-X Series (2700#)

Disk type:

• O-Series Organic
• TZ-Series full Kevlar
• OFE-Series Organic / Feramic dual friction
• TZ/FE-Series Kevlar / Feramic dual friction
• TZ/B-Series Kevlar / Ceramic dual friction
• B-Series full Ceramic
• DXD-B Series Ceramic 6-puck
• DXD-F Series Feramic 6-puck

Hub type:

• Sprung Hub
• Solid Hub