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2x Flanged Nuts M8
The models this kit fits are called 550
Please Notes: since these are catless downpipes
Kit is designed for big bore size 89
For 97-05 Audi A4 B5/B6 1
2001-2004 Chevrolet GMC LB7 6.6L Duramax Diesel Exhaust Up-Pipe Audi 2x Flanged Nuts M8Product Overview 1. Significantly reduces exhaust back pressure, offering 50% more flow compared to stock. 2. Features free flowing stainless steel inner liner bellows for enhanced airflow. 3. Constructed with stainless steel 11 gauge . 120 inch wall, 2 inch OD up pipes for durability and performance. 4. Direct bolt on replacement for factory manifolds, requiring no modifications. 5. Passenger side pipe is purposely indented for firewall clearance,
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