Collection: Auto - Ring gear

Restore smooth engine starting and consistent power transfer with our selection of Auto Ring Gear components. At DIY Customs, we provide high-durability flywheel ring gears, specialized differential ring gears, durable flexplate assemblies, and heavy-duty drivetrain hardware designed for a perfect fit in manual transmissions, automatic gearboxes, and rear-end differentials. Whether you are replacing a worn-out starter ring gear to fix engagement issues, upgrading to a specialized high-performance differential ring for increased torque capacity, or seeking a heat-treated gear set for a heavy-duty towing application, our professional-grade hardware offers the tooth-engagement precision and tensile strength you need at unbeatable prices. From specialized press-fit flywheel gears to direct-fit assemblies for popular domestic and import platforms, we carry the essential gear for every drivetrain project. Don't see the specific tooth count, diameter, or specialized ring gear for your transmission or axle? 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!