S&S Cycle
S&S, head bolt kit black
S&S, head bolt kit black
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14% Stronger than stock and perfect for use with all stock 107/114/117/121; S&S big bore kits and other high performance applications. - Much stronger than stock - Black oxide coated - Heat treated 8640 steel- 200.000 psi ultimate tensile strength- 9/16" 12 point head with integral washer- Formed threads- Cold formed head- Re-usable
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Why buy from Forty5°
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Not sure it fits?
Ask on WhatsAppPick your bike at the top of the page to see which parts are listed for it. For anything not listed, send us your VIN on WhatsApp and we'll confirm the fit before you order.
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Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
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Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp Tuesday to Sunday, 11am–7pm.