CORSA Performance Xtreme Valved Cat-Back Exhaust Part number 21326CF is a complete CORSA Performance Active Valve Cat-Back system for the 3.0L Cadillac CT5-V. This Xtreme Valved configuration uses 3.0-inch tubing and polished carbon-fiber 4.5-inch twin tips. Designed for the 2020–2025 Cadillac CT5-V