S&S Cycle Cylinder Stud & Head Bolt Kit – ’17-’23 M8 Models

Description

• Product Description
• Vehicle Fitment

• Studs

  • 8 studs with rounded thread roots, rather than flat, improving fatigue strength
  • 4140 Chrome Moly studs, oil quenched and tempered to 39-44 HRC
  • 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
  • 8 – head bolts with integral washer
  • Formed threads
  • Cold formed head
  • Compatible with both MLS & graphite head gaskets

• S&S Cycle 2401-1621 Vehicle Fitment & Compatibility

  Fitment data lists this product for 153 model-year applications across 1 makes, with listed model years from 2017 through 2023.

  Harley-Davidson (153 model-year applications)

  Model

  Submodel / Trim	Years
  Breakout	FXBR 107	2018, 2019
  Breakout	FXBR 117	2023
  Breakout	FXBRS 114	2018, 2019, 2020
  CVO	Limited FLHTKSE	2017, 2018, 2019, 2020, 2021
  CVO Road Glide	FLTRXSE	2018, 2019, 2020, 2021, 2022, 2023
  CVO Road Glide	Limited FLTRKSE	2022, 2023
  Deluxe	FLDE 107	2018, 2019, 2020
  Electra Glide	Highway King FLHFB	2023
  Electra Glide	Standard FLHT	2019, 2020-2022
  Electra Glide	Ultra Classic FLHTCU	2017-2019
  Fat Bob	FXFB 107	2018-2019
  Fat Bob	FXFBS 114	2018-2021, 2023
  Fat Boy	FLFB 107	2018-2019
  Fat Boy	FLFBS 114	2018-2023
  FXDR	FXDRS 114	2019-2020
  Heritage Classic	FLHC 107	2018-2021
  Heritage Classic	FLHCS 114	2018-2023
  Low Rider	FXLR 107	2018-2020
  Low Rider	ST FXLRST 117	2022
  Low Rider S	FXLRS 114	2020-2021
  Low Rider S	FXLRS 117	2022-2023
  Low Rider ST	FXLRST 117	2023
  Road Glide	FLTRX	2017-2023
  Road Glide	Limited FLTRK	2020-2023
  Road Glide	Special FLTRXS	2017-2023
  Road Glide	ST FLTRXST	2022-2023
  Road Glide	Ultra FLTRU	2017-2019
  Road King	FLHR	2017-2022
  Road King	Special FLHRXS	2017-2023
  Softail	Slim FLSL 107	2018-2021
  Softail	Standard FXST 107	2020-2023
  Sport Glide	FLSB 107	2018-2021
  Street Bob	FXBB 107	2018-2020
  Street Bob	FXBBS 114	2021-2023
  Street Glide	CVO FLHXSE	2017-2023
  Street Glide	FLHX	2017-2023
  Street Glide	Special FLHXS	2017-2023
  Street Glide	ST FLHXST	2022-2023
  Ultra Limited	FLHTK	2017-2023
  Ultra Limited Low	FLHTKL	2017-2019