Collection: Auto - Transmission Crossmember

Safely support your transmission assembly, optimize your drivetrain angles to eliminate driveline vibration, and gain maximum dual-exhaust clearance with our heavy-duty selection of Auto Transmission Crossmembers. At DIY Customs, we provide high-strength tubular crossmembers, specialized transmission swap crossmember adaptors, durable frame brackets, and high-durometer polyurethane replacement bushings designed for a perfect fit on custom engine swaps, classic muscle cars, and lifted off-road trucks. Whether you are seeking a specialized double-hump crossmember to cleanly route large diameter headers without losing ground clearance, outfitting your vehicle build for a modern overdrive transmission conversion, or replacing a rusted or bent factory frame component with an adjustable high-tensile steel crossmember bar, our professional-grade chassis hardware offers the structural integrity and installation alignment accuracy you need at unbeatable prices. From raw mounting brackets to direct-fit structural hardware additions engineered for popular import and domestic platforms, we carry the ultimate drivetrain-reinforcement essentials. Don't see the specific frame rail spacing, transmission mount pattern, or specialized exhaust clearance drop for your custom swap project? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what you are looking for directly to your doorstep!