When it comes to the automotive aftermarket, performance, reliability, and turnaround time are everything. Marmon Keystone is a trusted partner for automotive manufacturers, fabricators, and distributors, providing a steady supply of precision-cut steel, aluminum, and mechanical tubing designed to meet the rigorous demands of aftermarket applications. Whether you’re producing suspension components, exhaust systems, steering assemblies, or custom vehicle accessories, we have the inventory depth and processing capabilities to help you stay competitive.
At Marmon Keystone, we understand the aftermarket moves fast. Replacement parts, upgrades, and performance components require not only high-quality material but also reliable delivery schedules and consistent specifications. Our nationwide distribution network ensures your operation has quick access to a broad selection of carbon steel, alloy steel, aluminum, and stainless mechanical tubing — in the sizes, grades, and quantities you need to keep your production running smoothly. From high-strength materials for chassis and suspension to corrosion-resistant alloys for exhaust systems and structural reinforcements, Marmon Keystone delivers products that meet or exceed OEM and aftermarket standards.
In addition to a robust inventory, we offer value-added services that are designed to simplify your supply chain and help you reduce waste, lower costs, and accelerate time to market. Our precision tube cutting, deburring, chamfering, and end-finishing services ensure you receive material that’s ready for assembly — allowing your production teams to focus on what they do best.
For the automotive aftermarket industry, product performance and consistency aren’t negotiable. Our ISO-certified quality management systems ensure your orders are processed with accuracy, and every material shipment meets your engineering and application specifications. Whether you need just-in-time delivery for high-volume orders or specialized batch runs for custom components, Marmon Keystone is prepared to support your goals at every stage.
When you partner with Marmon Keystone, you gain more than a material supplier — you gain a reliable extension of your production process. Our technical sales teams are experienced in the unique challenges of the automotive aftermarket and are committed to helping you source the right materials for optimal performance, longevity, and value.