ITEM: Cylinder Head-Studs AVAILABILITY: In stock APPLICATION: All Ducati Engines PRICE: $240 (Qty.8) PURCHASE: Click Contact button Air cooled Ducati engines have shown a record of head-stud failures.  We invested a substantial amount of time and money to resolve this dilemma.  The head studs fail, because they are not elastic enough.  We tested two types of studs available for Ducati engines.  All the silver-colored studs failed prematurely because they do not have sufficient elasticity.  The dark-colored studs showed good elasticity, 15%, and 164 ksi tensile strength.  Our studs have 19% elasticity and 164 ksi tensile strength.  A must for any engine using higher than stock compression! Nichols Cylinder Head-Studs (Qty. 8) ($240)