S&S Cycle Cylinder Stud & Head Bolt Kit Fits Harley-Davidson Milwaukee-Eight M8 2017-2023

S&S Cycle Cylinder Stud & Head Bolt Kit Fits Harley-Davidson Milwaukee-Eight M8 2017-2023

An S&S cylinder stud and head bolt kit Compatible with Harley-Davidson 2017-2023 Milwaukee-Eight engines, combining high-strength 4140 Chrome-Moly studs and 8640 steel head bolts that deliver a 14 percent strength increase over stock per S&S.

Key Features

• Kit contains 8 cylinder studs and 8 head bolts
• Studs: 4140 Chrome-Moly, oil-quenched and tempered to 39-44 HRC, 180,000 psi tensile strength
• Studs feature rounded thread roots for improved fatigue strength versus flat-root studs
• Positive stop shoulder on the studs allows for consistent installed height
• Head bolts: reusable 8640 steel with integral washer, 200,000 psi ultimate tensile strength
• 14 percent strength increase over stock per S&S

Technical Specifications

• Application: 2017-2023 Harley-Davidson Milwaukee-Eight cylinder studs and head bolts
• Studs: 8 pieces, 4140 Chrome-Moly, 180,000 psi tensile, 39-44 HRC, rounded thread roots, positive-stop shoulder
• Head Bolts: 8 pieces, 8640 steel, 200,000 psi ultimate tensile, reusable, integral washer
• Unit of Measure: Kit

Fitment Notes

• Compatible with Harley-Davidson 2017-2023 Milwaukee-Eight (M8) engines across the model lineup.
• Refer to the Fitment tab for the year and platform breakdown.
• Not affiliated with or endorsed by Harley-Davidson.