Cylinder Head Bolt Kit for Harley Davidson All Pan Heads and Shovel Heads

Cylinder Head Bolt Kit for Harley Davidson All Pan Heads and Shovel HeadsHIGH PERFORMANCE SERIESHigh Performance head bolts are available with a reduced wrenching hex or 12 point and wide area flanged head that eliminates theneed for valve train removal to facilitate cylinder head retorquing. All High Performance Series bolts are 180,000 psi (which is 15%stronger than Grade 8) and kits come complete with hardened parallel ground washers. PROFESSIONAL SERIESAll Pro Series bolts are cold forged to ensure molecular integrity,

All of them are substantially better than the stock OEM and most aftermarket bolts

with handy 12-point or standard hex heads

You won’t find abetter quality stud on the market from any other source

Pro Series main bolts are application-specific

Most applications have undercut short bolts that can help eliminate head gasket failures through providing more “stretch” to compensate for theadditional compression of gaskets

The less drag on the motor

delivers a material with superior fatigue characteristics and typically tensile strength in the 260

nominally rated at 180

then allow the nuts to be easily installed without the worry of cross-threading

ARP main bolts are designed to meet the exacting standards and demands of professional engine builders

heat-treating to 190

Wide underhead flange and companion washers provide even load distribution