11'' x 1-3/8'' 10 spline 1968-70 427- 428 and 1971 429 BB Ford

These diaphragm style pressure plate and clutch disc sets are designed with a dual purpose in mind.  The clutch disc is lined with two different compounds.  One side gives smooth clutch engagement for ease of performance street driving, while the other side has a more aggressive compound and will withstand the abuse of competition.  These clutches can increase the holding capacity as much as 90% over a stock clutch setup.  The diaphragm design gives a nice, easy pedal feel without the need for typical clutch linkage reinforcing.  Installs like a stock type unit without any modifications.