This is an aftermarket Clutch rod upgrade for Diablo's manufactured after 1994 (1995 - 2001) These rods are very prone to breakage. For full article and installation visit:
http://lamboweb.com/Repairs_Section/Diablo_Repairs_Broken_Clutch_Rod.htm
http://www.lamboweb.com/Repairs_Section/Repairs_Clutch_Connecting_Rod.htm