5X entries this week! Lowrider ST + $5k Cash Giveaway - Every $1 spent = 5 Entries!

See details
A set of S&S Cycle Head Bolt Kit for 2017-up M8 Models on a white background.
A set of S&S Cycle Head Bolt Kit for 2017-up M8 Models on a white background.
A set of bolts and screws, including an S&S Cycle Head Bolt Kit for 2017-up M8 Models, on a table.
A set of S&S Cycle Head Bolt Kit for 2017-up M8 Models on a white background.
A set of bolts and screws, including an S&S Cycle Head Bolt Kit for 2017-up M8 Models, on a table.

Head Bolt Kit for 2017-up M8 Models

SKU: 109-0312

$199.95
999 Entries
5X
/
  • Low stock - 2 items left
  • Inventory on the way
  • Hassle Free 90 Day Returns
  • Free USA Shipping For Orders Over $99*
  • Free Tech Support M-F 8am-5pm EST
  • We Ship Fast! No Backorders, No Drop Shipping, No BS.

S&S Head Bolt Kit for 2017-up M8 Models

Have you experienced the common M8 Head Bolt failure or fearful you might? Replace them with a stronger direct replacement Bolt from S&S! Every S&S part is built from quality materials in the USA. 

Features:

  • Heat Treated 8640 Steel
  • 200,000 psi Ultimate Tensile Strength
  • 14% increases in strength over stock
  • Stronger material than stock Head bolts
  • Durable Black Oxide Coating
  • 9/16"" 12 point head with integral washer
  • Formed threads
  • Cold Formed Head
  • Reusable
Read More
  • 2020-2021 Harley-Davidson Softail Low Rider S FXLRS 
  • 2020-2021 Harley-Davidson Road Glide Limited FLTRK 
  • 2020-2021 Harley-Davidson CVO Tri Glide FLHTCUTGSE 
  • 2020-2021 Harley-Davidson Softail Standard FXST 
  • 2019-2021 Harley-Davidson Electra Glide Standard EFI FLHTI 
  • 2019-2020 Harley-Davidson FXDR 114 
  • 2018-2021 Harley-Davidson Softail Fat Bob 114 FXFBS 
  • 2018-2021 Harley-Davidson Softail Fat Boy 114 FLFBS 
  • 2018-2021 Harley-Davidson Softail Heritage Classic 114 FLHCS 
  • 2018-2021 Harley-Davidson Softail Heritage Classic FLHC 
  • 2018-2021 Harley-Davidson Softail Slim FLSL 
  • 2018-2021 Harley-Davidson Softail Sport Glide FLSB 
  • 2018-2021 Harley-Davidson Softail Street Bob FXBB 
  • 2018-2021 Harley-Davidson CVO Road Glide Custom FLTRXSE 
  • 2018-2020 Harley-Davidson Softail Breakout 114 FXBRS 
  • 2018-2020 Harley-Davidson Softail Deluxe FLDE 
  • 2018-2020 Harley-Davidson Softail Low Rider FXLR 
  • 2018-2019 Harley-Davidson Softail Breakout FXBR 
  • 2018-2019 Harley-Davidson Softail Fat Bob FXFB 
  • 2018-2019 Harley-Davidson Softail Fat Boy FLFB
  • 2017-2021 Harley-Davidson Electra Glide Ultra Limited FLHTK 
  • 2017-2021 Harley-Davidson Street Glide Special FLHXS 
  • 2017-2021 Harley-Davidson Road Glide Special FLTRXS 
  • 2017-2021 Harley-Davidson Freewheeler FLRT 
  • 2017-2021 Harley-Davidson Road King Special FLHRXS 
  • 2017-2021 Harley-Davidson CVO Electra Glide Ultra Limited FLHTKSE 
  • 2017-2021 Harley-Davidson Tri Glide Ultra Classic FLHTCUTG 
  • 2017-2021 Harley-Davidson Road King EFI FLHR 
  • 2017-2021 Harley-Davidson Street Glide EFI FLHX 
  • 2017-2021 Harley-Davidson Road Glide Custom FLTRX 
  • 2017-2021 Harley-Davidson CVO Street Glide FLHXSE 
  • 2017-2020 Harley-Davidson Electra Glide Police FLHTPI 
  • 2017-2019 Harley-Davidson Electra Glide Ultra Limited Low FLHTKL 
  • 2017-2019 Harley-Davidson Road Glide Ultra FLTRU 
  • 2017-2019 Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI
  • 109-0312
  • 2401-1106
  • 900-1006

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

California: ⚠️WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Instructions

Trending Products

Sale
A set of four TC Bros. Pro Series Modular Pullback Risers on a white background.
A set of four TC Bros. Pro Series Modular Pullback Risers on a white background.
TC Bros.
TC Bros. Pro Series Modular Pullback Risers
$349.95 $324.95 Save $25.00
1624 Entries
5X
32 reviews
Sale
A TC Bros. Sportster Hardtail Kit for 1982-2003 (Weld On) by TC Bros. with a steel frame and bolts and nuts, perfect for installing a stock width wheel onto the motorcycle.
A Sportster Hardtail Kit for 1982-2003 by TC Bros. (Weld On) fits Stock 130-150 Tire motorcycle is shown on a white background.
TC Bros.
Sportster Hardtail Kit for 1982-2003 by TC Bros. (Weld On) fits Stock 130-150 Tire
$394.95 $349.95 Save $45.00
1749 Entries
5X
136 reviews
Sale
A set of TC Bros. Dyna Mid Controls Kit (NO PEGS) fits 1991-2017 for a black car.
2019 TC Bros. Dyna Mid Controls Kit (NO PEGS) fits 1991-2017, made in the USA, in San Diego, California - photo.
TC Bros.
TC Bros. Dyna Mid Controls Kit (NO PEGS) fits 1991-2017
$349.95 $324.95 Save $25.00
1624 Entries
5X
14 reviews
Sale
Two Moto Iron® chrome motorcycle brake and clutch levers isolated on a white background.
Two Moto Iron® chrome motorcycle brake and clutch levers isolated on a white background.
Moto Iron®
1" Vintage Handlebar Control Kit with Master Cylinder & Clutch (Chrome)Harley and Custom Motorcycle
$324.95 $299.95 Save $25.00
1499 Entries
5X
67 reviews
Sale
The TC Bros. Extended Fork Tube Kit +6" 39mm for Sportster/ Dyna Narrow Glide features a Hard Chrome Finish on its Fork Tubes, providing a sleek and durable look.
Fitment Notes: TC Bros. Extended Fork Tube Kit +6
TC Bros.
Extended Fork Tube Kit +6" 39mm for Sportster/ Dyna Narrow Glide
$249.95 $224.95 Save $25.00
1124 Entries
5X
117 reviews
Sale
Harley-Davidson XR650R is a USA made motorcycle that can be enhanced with a TC Bros. Sportster Mid Controls Kit for 91-03 5 Speed.
TC Bros. Sportster Mid Controls Kit for 91-03 5 Speed is a USA Made motorcycle model widely known for its powerful performance. With its iconic design and excellent craftsmanship, this TC Bros. Sportster Mid Controls Kit for 91-03 5 Speed offers an exhilarating riding experience.
TC Bros.
TC Bros. Sportster Mid Controls Kit for 91-03 5 Speed
$274.95 $249.95 Save $25.00
1249 Entries
5X
66 reviews
Sale
An image showcasing a TC Bros. 11.8in Profile™ Front Floating Brake Rotor for 2006-23 Harley Models, made with high carbon stainless steel friction material, against a clean white background.
A man doing a handstand on a TC Bros. 11.8in Profile™ Front Floating Brake Rotor for 2006-23 Harley Models motorcycle.
TC Bros.
TC Bros. 11.8in Profile™ Front Floating Brake Rotor for 2006-23 Harley Models
$174.95 $149.95 Save $25.00
749 Entries
5X
5 reviews
Sale
A TC Bros. M8 Softail Front Crash Bar fits 2018+ FXST, FXBB, FXBBS, FXLR, FXLRS, and FXLRST bike crash bar with bolts and nuts.
TC Bros. M8 Softail with mid controls and a TC Bros. M8 Softail Front Crash Bar fits 2018+ FXST, FXBB, FXBBS, FXLR, FXLRS, FXLRST.
TC Bros.
TC Bros. M8 Softail Front Crash Bar fits 2018+ FXST, FXBB, FXBBS, FXLR, FXLRS, FXLRST
$349.95 $299.95 Save $50.00
1499 Entries
5X
Sale
Moto Iron® Springer Front End Brake Caliper Kit Left Side Chrome - high performance 4 piston caliper.
The Moto Iron® Springer Front End Brake Caliper Kit Left Side Chrome, a high performance 4 piston caliper, is shown on a white background.
Moto Iron®
Springer Front End Brake Caliper Kit Left Side Chrome
$199.95 $179.95 Save $20.00
899 Entries
5X
83 reviews
Sale
A TC Bros. Dyna Front Crash Bar (fits 1991-2017 models) with bolts and screws.
A black TC Bros. motorcycle parked in front of a building.
TC Bros.
TC Bros. Dyna Front Crash Bar (fits 1991-2017 models)
$324.95 $299.95 Save $25.00
1499 Entries
5X
5 reviews
View all
View all
24 products