Collection: Auto - Manual Trans Gear

Restore full power delivery and smooth mechanical engagement with our selection of Auto Manual Trans Gearcomponents. At DIY Customs, we provide high-strength replacement speed gears (1st through 6th), durable reverse gears, specialized cluster gear sets, and heavy-duty gear mounting hardware designed for a perfect fit. Whether you are replacing a gear with chipped teeth after a hard shift, upgrading your transmission for higher torque capacity, or performing a professional-grade gearbox overhaul, our professional-grade hardware offers the gear geometry and surface hardness you need at unbeatable prices. From specialized synchro hubs to direct-fit internal components for popular BorgWarner, Tremec, and NV-series transmissions, we carry the essential gear for every manual drivetrain. Don't see the specific tooth count, gear ratio, or specialized internal gear for your gearbox? 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!