
S&S CYCLE
Cylinder Stud & Head Bolt Kit - '17-'23 M8 Models
Part # 2401-1621
$249.95
In Stock
- 60-day returns
- Free shipping over $100
- Secure checkout
Confirmed fit for 161 motorcycle configurations across Harley-Davidson, model years 2017–2023.
| Years | Make & Model |
|---|---|
| 2022 Harley-Davidson | Softail Street Bob FXBB |
| 2020-2023 Harley-Davidson | FLTRK Road Glide Limited |
| 2018-2023 Harley-Davidson | FLTRXSE CVO Road Glide |
| 2017-2023 Harley-Davidson | FLHTK Ultra Limited |
| 2017-2019 Harley-Davidson | FLHTKL Ultra Limited Low |
| 2017-2023 Harley-Davidson | FLHXS Street Glide Special |
| 2017-2023 Harley-Davidson | FLTRXS Road Glide Special |
| 2019-2022 Harley-Davidson | FLHT Electra Glide Standard |
| 2022-2023 Harley-Davidson | FLHXST Street Glide ST |
| 2017-2021 Harley-Davidson | FLHTKSE CVO Limited |
| 2017-2023 Harley-Davidson | FLHX Street Glide |
| 2023 Harley-Davidson | FLHFB Electra Glide Highway King |
| 2017-2022 Harley-Davidson | FLHR Road King |
| 2017-2023 Harley-Davidson | FLHXSE CVO Street Glide |
| 2022-2023 Harley-Davidson | FLTRKSE CVO Road Glide Limited |
| 2022-2023 Harley-Davidson | FLTRXST Road Glide ST |
| 2017-2023 Harley-Davidson | FLHRXS Road King Special |
| 2017-2023 Harley-Davidson | FLTRX Road Glide |
| 2021 Harley-Davidson | FLH Electra Glide Revival |
| 2017-2021 Harley-Davidson | Electra Glide Police FLHTPI |
| 2017-2019 Harley-Davidson | FLHTCU Electra Glide Ultra Classic |
| 2017-2019 Harley-Davidson | FLTRU Road Glide Ultra |
| 2022 Harley-Davidson | FXRST Low Rider El Diablo 117 |
| 2022-2023 Harley-Davidson | FXLRST Low Rider ST 117 |
| 2018-2023 Harley-Davidson | FLHCS Heritage Classic 114 |
| 2018-2021 Harley-Davidson | FLSL Softail Slim 107 |
| 2018-2020 Harley-Davidson | FXBB Street Bob 107 |
| 2018-2019 Harley-Davidson | FXFB Fat Bob 107 |
| 2018-2021, 2023 Harley-Davidson | FXFBS Fat Bob 114 |
| 2022-2023 Harley-Davidson | FXLRS Low Rider S 117 |
| 2020-2023 Harley-Davidson | FXST Softail Standard 107 |
| 2020-2021 Harley-Davidson | FXLRS Low Rider S 114 |
| 2018-2019 Harley-Davidson | FLFB Fat Boy 107 |
| 2018-2023 Harley-Davidson | FLFBS Fat Boy 114 |
| 2018-2019 Harley-Davidson | FXBR Breakout 107 |
| 2018-2020 Harley-Davidson | FXLR Low Rider 107 |
| 2021-2023 Harley-Davidson | FXBBS Street Bob 114 |
| 2018-2020 Harley-Davidson | FLDE Deluxe 107 |
| 2018-2021 Harley-Davidson | FLHC Heritage Classic 107 |
| 2018-2021 Harley-Davidson | FLSB Sport Glide 107 |
| 2018-2020 Harley-Davidson | FXBRS Breakout 114 |
| 2019-2020 Harley-Davidson | FXDRS FXDR 114 |
| 2023 Harley-Davidson | FXBR Breakout 117 |
- 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
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Overview
The S&S CYCLE 2401-1621: Cylinder Stud & Head Bolt Kit - '17-'23 M8 Models. Confirmed fit for 161 motorcycle configurations across Harley-Davidson, model years 2017–2023. Ships from Greasemoto — a veteran-owned motorcycle parts shop in Fort Worth, TX — with free U.S. shipping on orders over $100.
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Fits these motorcycles
- Harley-Davidson Softail Street Bob FXBB
- Harley-Davidson FLTRK Road Glide Limited
- Harley-Davidson FLTRXSE CVO Road Glide
- Harley-Davidson FLHTK Ultra Limited
- Harley-Davidson FLHTKL Ultra Limited Low
- Harley-Davidson FLHXS Street Glide Special
- Harley-Davidson FLTRXS Road Glide Special
- Harley-Davidson FLHT Electra Glide Standard
- Harley-Davidson FLHXST Street Glide ST
- Harley-Davidson FLHTKSE CVO Limited
- Harley-Davidson FLHX Street Glide
- Harley-Davidson FLHFB Electra Glide Highway King
- Harley-Davidson FLHR Road King
- Harley-Davidson FLHXSE CVO Street Glide
- Harley-Davidson FLTRKSE CVO Road Glide Limited
- Harley-Davidson FLTRXST Road Glide ST
- Harley-Davidson FLHRXS Road King Special
- Harley-Davidson FLTRX Road Glide
- Harley-Davidson FLH Electra Glide Revival
- Harley-Davidson Electra Glide Police FLHTPI
- Harley-Davidson FLHTCU Electra Glide Ultra Classic
- Harley-Davidson FLTRU Road Glide Ultra
- Harley-Davidson FXRST Low Rider El Diablo 117
- Harley-Davidson FXLRST Low Rider ST 117
