S&S Cycle 4.250 Inch Standard Piston Ring Set for 2017-Up Harley-Davidson M8

S&S Cycle 4.250 Inch Standard Piston Ring Set for 2017-Up Harley-Davidson M8

Maintaining correct ring seal in a Milwaukee-Eight big bore build is critical to power output, oil control, and long-term engine health. This standard-bore ring set is designed for S&S big bore applications, covering configurations from 107ci to 124ci. Made in the USA, each ring is manufactured to the tight tolerances required for reliable performance in high-output M8 builds.

Key Features

• Complete replacement ring set for 4.250 inch bore S&S big bore applications
• Covers S&S Milwaukee-Eight big bore configurations from 107ci to 124ci displacement
• Standard bore size – verify your bore diameter before ordering
• Sold as a 2-pack (rings for two cylinders)
• Made in the USA to S&S Cycle quality standards

Technical Specifications

• Application: 2017-Up Harley-Davidson Milwaukee-Eight (M8)
• Bore diameter: 4.250 inches, standard
• Coverage: S&S 107ci to 124ci M8 big bore configurations
• Pack quantity: 2-pack (two cylinder sets)
• Origin: Made in USA

Fitment Notes

• Designed for 2017-Up Harley-Davidson Milwaukee-Eight (M8) engines with a 4.250 inch bore
• Intended for use with S&S big bore cylinder and piston kits – verify bore diameter before ordering
• Standard bore only – not for use with oversize pistons
• Review the Fitment tab for complete year and model compatibility