CTS Turbo 8V/8Y RS3 and 8S TTRS 2.5T EVO 3.5" Single High-Flow CAT

The CTS Turbo EVO 3.5" Single High-Flow CAT is engineered specifically for the 2.5-litre turbocharged five-cylinder in 8V/8Y RS3 and 8S TTRS models. Built around a 3.5-inch diameter core, this high-flow catalytic converter dramatically reduces exhaust restriction compared to the factory unit while maintaining catalytic function. The larger internal volume and optimised substrate allow tuned engines to breathe more efficiently, supporting higher performance levels without creating excessive backpressure. CTS Turbo's EVO construction ensures durability under increased heat and flow demands, making it ideal for dealer builds requiring both performance gains and catalytic retention.