Gtech Motorsports BMW F9x S58 Single Mid Pipe with Extended Underbrace (X3M & X4M Pre-LCI)

Transform the sound and performance of your BMW S58 engine with the Gtech Motorsports single mid pipe. Designed to replace the restrictive factory setup, it delivers smoother exhaust flow, a deeper tone, and stronger throttle response while maintaining OEM-level fitment. Perfect for enthusiasts who want both sound refinement and performance gains. Key Features & Benefits: 304 stainless steel construction for durability and corrosion resistance TIG welded for strength under extreme temperatures and pressure Extended underbrace integrates seamlessly with OEM suspension and chassis components Refined exhaust tone that eliminates harsh rasp, producing a deeper and more aggressive sound OEM-style brackets, mounts, and ball flanges for a direct bolt-on installation Improved throttle response and flow for measurable power gains Vehicle Compatibility / Fitment: BMW X3M F97 Pre-LCI BMW X3M Competition F97 Pre-LCI BMW X4M F98 Pre-LCI BMW X4M Competition F98 Pre-LCI Technical Specifications: Material: 304 stainless steel Construction: 100% TIG welded Finish: Brushed stainless Design: Single mid pipe with extended underbrace Fitment: OEM-spec ball flanges and mounts Installation Information: Tools required: standard exhaust tools and torque wrench Install time: approx. 2–3 hours Recommended: professional installation for best fitment and alignment Performance Gains / Why It’s Needed: The factory S58 mid pipe produces a buzzy, raspy tone that hides the true character of the engine. Gtech’s single mid pipe improves flow for stronger midrange torque and faster throttle response while delivering a deeper, more refined exhaust note. Ideal for spirited road driving or track use. What’s Included: 1x Gtech stainless steel single mid pipe with extended underbrace OEM-style flanges, brackets, and mounting hardware Warranty & Guarantee: Comes with manufacturer warranty. Returns accepted on unused products in original packaging. SEO Extra Details: Related terms: BMW S58 exhaust upgrade, X3M mid pipe, X4M mid pipe, stainless steel performance exhaust, BMW F97 exhaust tuning. Customers may also be interested in BMW downpipes, intercoolers, and tuning accessories. FAQs: Q: Will this fit Post-LCI models? A: No, this mid-pipe is designed for Pre-LCI X3M and X4M models. Q: Does it affect MOT or emissions? A: For EU OPF-equipped cars, coding or ECU tuning is required. Motorsport use only. Q: What sound difference can I expect? A: A deeper, more refined tone with reduced rasp compared to stock. Q: Is professional installation necessary? A: While it is a bolt-on, professional installation ensures perfect fit and alignment.