Does anyone know what to call the neoprene plastic piece on the end of the clutch slave shaft is? My son just replaced the slave and master cylinder and we noticed that piece was shattered and we can't get pressure to build up in the system. Even when we press the pedal 25 times then open the bleeder valve, the auto parts stores haven't the part or knows what to call it. Thanks in advance for anything that helps....Dave

Well... I found what may be the answer... The book says to remove the slave cylinder and remove the fork actuator rod and then compress the inner piston with a clamp, then bleed the system then remove the clamp and re-install slave. Simple as that? We shall see...to be continued.