

IRL F97 F98 X3M X4M MaxFlow Race Resonated Downpipes
IRL F97/F98 X3M/X4M MaxFlow Resonated Downpipes
Refine the sound of your S58 without sacrificing performance with the IRL MaxFlow Resonated Downpipes for the BMW F97 X3M and F98 X4M. Designed for enthusiasts who want maximum exhaust flow with a deeper, smoother exhaust note, these downpipes reduce unwanted rasp while maintaining the aggressive character the S58 is known for.
Constructed from premium 304 stainless steel, each downpipe features precision TIG welding, smooth mandrel bends, CNC-machined flanges, and a fully integrated stainless steel heat shield to help reduce underhood temperatures and improve thermal management. The integrated resonators smooth out harsh exhaust frequencies, delivering a deeper, cleaner exhaust note without sacrificing the aggressive S58 sound.
By significantly reducing factory exhaust backpressure, the IRL MaxFlow Resonated Downpipes allow the turbochargers to spool faster, improve throttle response, and unlock additional horsepower and torque when paired with the proper ECU calibration. Integrated flex sections help absorb engine movement and reduce stress on the exhaust system, ensuring long-term durability under demanding conditions.
Whether paired with the factory exhaust or an aftermarket cat-back, the IRL MaxFlow Resonated Downpipes provide the perfect balance of performance, sound quality, and everyday drivability.
Features
- Designed specifically for BMW F97 X3M & F98 X4M (S58)
- Integrated resonators for a deeper, smoother exhaust tone
- Reduces unwanted rasp while maintaining an aggressive exhaust note
- Fully integrated stainless steel heat shields to reduce underhood temperatures
- Premium 304 stainless steel construction
- Precision TIG-welded with smooth mandrel-bent tubing
- CNC-machined flanges for precise OEM-style fitment
- Integrated flex sections to reduce vibration and exhaust stress
- Faster turbo spool and improved throttle response
- Increased horsepower and torque potential with proper tuning
- Direct bolt-on installation with no permanent modifications
Please Note: These downpipes are intended for off-road/racing use only and may trigger a Check Engine Light depending on your vehicle’s software calibration. Professional installation is strongly recommended.
Maximum Flow. Refined Sound. Engineered for Performance.
Ships within 1-2 business days.
100% Genuine Parts
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IRL F97 F98 X3M X4M MaxFlow Race Resonated Downpipes
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FAQs
Please read our FAQs page to find out more.
Are OEM products more expensive than aftermarket alternatives?
OEM products might have a higher upfront cost compared to aftermarket parts, but their superior quality and durability often make them a more cost-effective choice over time. Investing in OEM ensures you’re getting parts specifically designed for your vehicle, which can lead to better performance and longevity.
Can I purchase OEM parts online or do I need to visit a dealership?
You don’t need to visit a dealership to get OEM parts. You can conveniently purchase genuine OEM components from authorized distributors and reputable online retailers like Turbo Tech Performance. Our online store provides a wide selection of high-quality parts delivered straight to your door.
Are parts from brands like Mopar, ACDelco, and Motorcraft interchangeable between different vehicle brands?
No, parts from Mopar, ACDelco, and Motorcraft are typically designed for specific vehicle brands. It’s crucial to ensure compatibility with your vehicle’s make and model by checking part numbers and consulting with a knowledgeable expert.
Can I install OEM parts myself, or is it better to have a professional handle it?
While some OEM parts can be installed by DIY enthusiasts, the complexity of installation can vary. For the best results and to ensure proper fitment and performance, we recommend having a trained mechanic install the parts, especially if you’re unfamiliar with automotive repairs.
Do OEM parts come with a warranty?
Yes, many OEM auto parts come with a manufacturer’s warranty that covers defects or issues. Be sure to check the warranty details for each part at the time of purchase, and keep your receipt for any potential warranty claims.


