3-Inch Catted Downpipe

The OTL Performance Catted Downpipe is engineered to enhance the performance of your 2023-2024 Toyota GR Corolla. Constructed entirely from 304 stainless steel with 3-inch CNC mandrel-bent tubing, this 2-piece downpipe is designed for optimal exhaust flow, leading to significant gains in horsepower and torque. Key features include a 4-inch investment cast 304 stainless elbow and an EPA-compliant GESI catalytic converter. It is equipped with O2 bungs positioned at the OEM locations, which helps prevent Check Engine Lights (CEL). It also includes a 304ss flex bellow for added durability. Installation is straightforward, with hardware provided to replace the two OEM spring bolts. This downpipe is made in the USA and backed by a limited lifetime warranty to the original purchaser. While gains of up to 20+ wheel horsepower and 20+ wheel torque are achievable without a tune, further performance improvements can be realized with ECU tuning. Vehicle Fitment: 2023-2024 Toyota GR Corolla. Note: Fitment for 2025 models is not yet confirmed.