Manufacturer SKU: BMW.G8X.M3.VSES.BR.RC BMW G80 M3 / G82–G83 M4 Exhaust System Single 3.5" Equal-Length Mid-Pipe + Optional Valved Axle-Back (T304 Stainless or Grade 5 Titanium) Overview The G80/G82/G83 is a phenomenal M car—its soundtrack just needs to catch up. Our single 3.5" equal-length mid-pipe unlocks the character the S58 deserves without requiring changes to the OEM rear section. Add the Valvetronic Designs valved axle-back for even more presence and control. Compatible with OEM downpipes or free-flow front pipes, this system is engineered to deliver a higher-pitch, refined note with zero check-engine lights. Sound With Free Flow Downpipes: Sound With Stock Downpipes: Why It Works - Equal-length design: Balances exhaust pulses for a smoother, higher-frequency tone. - Single 3.5" mid-section: Optimized flow for improved response and power throughout the rev range. - Modular by design: Pairs with OEM or aftermarket rear sections; upgrade path to our valved axle-back at any time. Sound & Control - With stock downpipes: Noticeably crisper, more engaging tone without drone. - With our valved axle-back (optional): Quad-chamber muffler and OEM-style valves deliver daily-driver civility closed, and an aggressive, motorsport edge opened—at the touch of a button. - No CEL: System is designed to avoid check-engine lights. Construction & Options - Materials: T304 stainless steel or ultra-light Grade 5 titanium. - Weight savings: Up to –57.8 lb (Titanium) or –24.7 lb (Stainless) vs. factory. - Craftsmanship: Precision TIG welds, fully mandrel-bent tubing, and included cross brace for rigidity. - Tips: Premium double-wall or single wall tips included. Valve Integration - Electronic valve control with included controller for rapid open/close. - OEM integration available if you prefer factory valve control behavior. Fitment - 2020+ BMW G80 M3 - 2020+ BMW G82 M4 (Coupe) - 2020+ BMW G83 M4 (Convertible) Installation Notes - Mid-pipe and axle-back can be installed independently. - When installing only a mid-pipe or axle-back, make the rear-section cut at the second dimple on the OEM pipe to ensure proper fitment. - 100% reversible—return to stock at any time. - CLICK HERE FOR INSTALL GUIDE Compatibility Notice (V3 Systems) - V1/V2 components are not compatible with V3. - The V3 mid-pipe includes additional clearances at the downpipe connection and mid-section; small visible gaps prior to tightening are normal and by design. What’s Included - Single 3.5" equal-length mid-pipe assembly - Cross brace - Optional: Valved axle-back with controller and tips - Hardware and clamps Specifications - Tubing diameter: 3.5" mid-pipe; 2.75" axle-back - Materials: T304 stainless steel or Grade 5 titanium - Finish: Brushed (Stainless) or raw/brushed (Titanium) - Valves: Electronic, with remote controller (OEM integration available)