
Steeda - S550 Mustang Adjustable Bumpstop Kit (2015-2021)
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Upgrade your 2015+ Mustang with the Optic Armor 3/16" Drop-In Black-Out Rear Window — the perfect combination of weight savings, sleek styling, and motorsport durability. Designed as a direct drop-in replacement for the factory glass, this rear window is made from high-quality polycarbonate for maximum strength and optical clarity, all while significantly reducing rear-end weight.
The blackout finish gives your Mustang an aggressive, race-ready look, while still offering outstanding outward visibility from the inside. Whether you're building a dedicated track car, drag car, or lightweight street machine, Optic Armor windows deliver the fit, finish, and performance serious builders demand.
Fits all 2015–2023 Ford Mustang models (S550/S650)
3/16" thick optically clear polycarbonate construction
Black-out edge finish for clean, seamless exterior styling
Drop-in design for easy replacement of factory rear glass
Provides significant weight savings over OEM glass
Enhanced durability — shatter-resistant and abrasion-resistant coating
Ideal for race cars, track builds, and lightweight street applications
Compatible with factory or aftermarket sealants and mounting methods
Professional installation recommended
Designed for racing and off-road use
May require trimming or modifications for roll cage clearance or custom mounting
2015–2023 Ford Mustang (GT, EcoBoost, V6, Mach 1, GT350, GT500, Dark Horse)
Optic Armor windows are trusted by top race teams for their unbeatable strength, lightweight design, and unmatched visibility. Whether you're shaving weight for quarter-mile performance or chasing lap times, this rear window upgrade helps you gain the edge — without sacrificing quality or looks.