{"product_id":"steeda-mustang-threaded-differential-through-bolt-upgrade-kit-2015-2022","title":"Steeda Mustang Threaded Differential Through Bolt Upgrade Kit (2015-2022)","description":"\u003cp\u003e\u003cstrong\u003eSteeda Mustang Threaded Differential Through Bolt Upgrade Kit (2015-2022)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThrough-bolting the rear Super 8.8\" differential to the IRS subframe on S550 Mustangs has become a popular modification due to premature factory bolt failure. Rather than permanently modifying your subframe by drilling out the bushings and differential housing, Steeda designed and machines in-house a custom high-strength hardened bolt that threads completely through the system. After heat treatment, the machined parts are nickel plated to prevent galling and provide superior corrosion protection.\u003c\/p\u003e\u003cp\u003eUsing heat-treated 4130 chromoly steel, these custom bolts are as strong as a class 12.9 fastener and have been proven on some of the quickest and fastest S550 Mustangs out there, including Steeda's own Silver Bullet build.\u003c\/p\u003e\u003cp\u003eNote: Intended to be used in conjunction with Steeda's 555-4050 Hardcore Differential Support Brackets.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo permanent modification\u003cbr\u003eCustom designed for this application\u003cbr\u003eNickel plated to prevent galling\u003cbr\u003eUpgraded hardware over OE\u003cbr\u003eHeat-treated 4130 chromoly for strength similar to grade 12.9 hardware\u003c\/p\u003e","brand":"Steeda","offers":[{"title":"Default Title","offer_id":62382016233842,"sku":"555-4051","price":219.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/6643\/7490\/files\/555-4051_PO4__48597.1681300010.webp?v=1789816482","url":"https:\/\/hypermotive.com\/products\/steeda-mustang-threaded-differential-through-bolt-upgrade-kit-2015-2022","provider":"Hypermotive Performance","version":"1.0","type":"link"}