Non-Polished Stainless Steel 4" Dump & Cat Kit Features 4" dump pipe with cast top 4" 100 cell high flow race cat Non polished stainless steel Reduces to 3" outlet Will bolt to factory standard cat back system Tune is recommended after fitment Specification Part No: E2-HY30N-KITB Vehicle Model: i30 Diameter [in]: 4" Material: Stainless Important Information: Image might not reflect actual exhaust system. Shipping times can vary due to size, destination and availability. Improve your vehicle's performance with this high-quality 4" dump and cat kit. The kit features a 4" dump pipe with a cast top and a 100 cell high flow race cat for optimal exhaust flow. Made of non-polished stainless steel, it reduces to a 3" outlet and easily bolts onto your factory standard cat back system. Please note that a tune is recommended after installation.