IRL F97 F98 X3M X4M MaxFlow Race Catted Downpipes

Unlock the full potential of your BMW with the IRL MaxFlow Downpipes, engineered for enthusiasts seeking maximum performance, faster turbo response, and an aggressive exhaust note. Available in both 200 Cell Race and 400 Cell High Flow configurations, these downpipes are manufactured from premium 304 stainless steel and feature precision TIG welding, smooth mandrel bends, CNC-machined flanges, and fully integrated stainless steel heat shields for superior durability and thermal management.

Designed to reduce exhaust backpressure and improve overall exhaust flow, the IRL MaxFlow Downpipes allow the turbochargers to spool faster while increasing horsepower, torque, and throttle response. The integrated heat shields help reduce underhood temperatures, protecting surrounding engine components while maintaining OEM-style fitment and appearance.

Available Options

200 Cell Race Downpipes
Designed for maximum exhaust flow and the most aggressive exhaust note. Ideal for customers looking to maximize power and turbo performance while producing a louder, more exotic sound.

400 Cell High Flow Downpipes
Engineered to deliver an excellent balance of performance, sound quality, and emissions control. The 400 Cell catalyst offers a cleaner exhaust note and improved emissions performance compared to the 200 Cell version while still supporting substantial horsepower gains.

Features

• Available in 200 Cell Race or 400 Cell High Flow configurations
• Premium 304 stainless steel construction
• Fully integrated stainless steel heat shields
• Precision TIG-welded construction
• Smooth mandrel-bent tubing for maximum flow
• CNC-machined flanges for OEM-quality fitment
• Faster turbo spool and improved throttle response
• Increased horsepower and torque potential with proper tuning
• Direct bolt-on installation

Important Note: While the 400 Cell High Flow downpipes significantly reduce the likelihood of a Check Engine Light, IRL does not offer a No Check Engine Light Guarantee on these units. A CEL may still occur depending on your vehicle’s software calibration and operating conditions.

These products are intended for off-road and closed-course racing use only. They are not legal for use on public roads or highways where emissions regulations apply.

Built for Maximum Flow. Engineered for Performance.

Orders are processed same or next business day. Shipping times vary depending on the product, shipping service, and whether freight shipping is required. While we ensure all inventory levels are current and accurate, they can change due to logistics and inventory feeds. Standard shipping typically takes 3-7 business days, but some items may require additional time depending on their origin. Feel free to call us anytime for the latest status of your order.