S&S Cylinder Stud & Head Bolt Kit. 8-pack. S&S USA #900-1176
- Studs
- 4140 Chrome Moly studs, oil quenched and tempered to 39-44 HRC
- Rounded thread roots, rather than flat, improving fatigue strength
- Positive stop shoulder allows for consistent installed height
- 180,000 psi tensile strength
- Head Bolts
- Reusable
- 14% increase in strength over stock
- Heat treated 8640 steel
- 200,000 psi ultimate tensile strength
- 9/16" 12 point head with integral washer
- Formed threads
- Cold formed head
- Compatible with both MLS & graphite head gaskets
