{"product_id":"steeda-mustang-adjustable-differential-bushing-insert-system-urethane-2015-2026","title":"Steeda Mustang Adjustable Differential Bushing Insert System - Urethane (2015-2026)","description":"\u003cp\u003e\u003cstrong\u003eSteeda Mustang Adjustable Differential Bushing Insert System - Urethane (2015-2026)\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSteeda's exclusive Adjustable Urethane Differential Mount Bushing Insert System increases performance without sacrificing too much drivability, letting you preserve the car's street manners per your preference. Unlike competitors' kits that take 3-4 hours to install and force you to permanently modify the rear IRS suspension with a Sawzall, Steeda's kit installs in under an hour, is adjustable, and can be easily removed.\u003c\/p\u003e\u003cp\u003eMade from high-strength urethane to Steeda's exact specifications and durometers, the kit comes with two bushing options: red 'street' 80 durometer bushings and black 'performance' 90 durometer bushings, both minimizing pinion angle changes, increasing traction, and eliminating wheel hop and differential deflection, with the red bushings offering the least increase in NVH. Bushings are included for both the front and rear differential mounting locations, with Grade 10.9 hardware and zinc-plated washers.\u003c\/p\u003e\u003cp\u003eNote: This product may increase noise, vibration, and harshness after installation by transmitting existing rear differential noise into the cabin as it firms up the OE bushings; NVH increases slightly with red bushings and more with black. For zero pinion deflection, race-use enthusiasts should consider Steeda's 555-4440 kit with aluminum bushing inserts instead. Also fits the Dark Horse, Mach 1, GT350, GT350R, and GT500.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eProduct Benefits:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eLimits IRS differential movement while increasing traction and eliminating wheel hop\u003cbr\u003eAdjustable stiffness with red or black bushings\u003cbr\u003eEasily removable, not a permanent modification\u003cbr\u003e100% designed, manufactured, and made in the USA\u003cbr\u003eInstalls in one hour or less\u003c\/p\u003e","brand":"Steeda","offers":[{"title":"Default Title","offer_id":62382002766194,"sku":"555-4443","price":199.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/6643\/7490\/files\/555-4439-bushing-irs-kit_pb44-nl__48491.1681300021.webp?v=1789816314","url":"https:\/\/hypermotive.com\/products\/steeda-mustang-adjustable-differential-bushing-insert-system-urethane-2015-2026","provider":"Hypermotive Performance","version":"1.0","type":"link"}