If you’re doing a big bore kit, head work or any other top end mods, the stock head bolts may struggle to handle highly torqued hardware and raised internal compression. The result can be head bolts popping clean off – a situation that can be easily prevented with a simple bolt upgrade S&S Cycle forged steel head bolts are designed to handle the stresses of high-powered engines, and are a recommended best-in-class solution for anyone doing performance upgrades to M8 engines.