Stainless Works FC13CB-RT 3" Cat-Back Exhaust System Vintage Round Muffler Dual Slash-Cut Tips

The Stainless Works FC13CB-RT is a performance cat-back exhaust system built from mandrel-bent, TIG-welded 304 stainless steel tubing. Featuring a full 3" diameter pipe and a signature vintage round muffler, this system delivers an aggressive exhaust tone with improved flow over the restrictive factory setup.

This system is designed for a factory connection ("Factory Connect") configuration, bolting directly to the OEM connection point for a hassle-free install. A second flanged adapter with a 3" diameter inlet is also included, allowing the system to connect to the Stainless Works Downpipe (FC13DP or FC13DPCAT) to build a complete, full 3" system from turbo to tips.

Key Features:

• 3" mandrel-bent 304 stainless steel piping throughout for maximum exhaust flow
• Vintage round muffler for an aggressive, classic exhaust note
• Dual 4" diameter mirror-polished 304 SS slash-cut conical double-wall tips for a premium finished look
• TIG-welded construction for superior strength and long-term durability
• Designed and manufactured in Streetsboro, Ohio, USA
• Mates to the factory connection point for a direct bolt-on installation
• Includes a second flanged adapter for 3" inlet compatibility with Stainless Works Downpipes (FC13DP, FC13DPCAT)
• All hangers, clamps, and adapters included — install-ready out of the box
• Backed by a Limited Lifetime Warranty on materials and workmanship

The FC13CB-RT is fully compatible with Stainless Works' modular downpipe systems, making it an ideal foundation for a complete high-performance exhaust build. Whether run on the factory downpipe or upgraded to a full 3" system, this cat-back delivers both the sound and the performance gains that Focus ST enthusiasts demand.