Enhance the exhaust sound and flow of your BMW G87 M2 with the Milltek Sport Non-Resonated 102mm Mid-Pipe. Engineered specifically for BMW's 3.0L twin-turbocharged S58 inline-six engine, this performance exhaust upgrade replaces the factory secondary catalyst section with a larger, freer-flowing design that delivers a more aggressive exhaust note while retaining the original rear muffler.
Featuring a 102mm (4-inch) single mid-pipe configuration, the Milltek system is designed to reduce exhaust restriction and enhance the natural sound characteristics of the S58 engine. Its large-diameter construction provides improved exhaust-flow capacity, making it an attractive upgrade for both stock and modified vehicles.
Unlike resonated mid-pipes that incorporate additional sound-suppression chambers, this non-resonated design emphasizes a louder, more pronounced exhaust tone. Drivers can expect increased exhaust presence during acceleration, a stronger mid-range soundtrack, and a more engaging overall driving experience.
The system is constructed from premium T304L stainless steel, selected for its excellent corrosion resistance, strength, and durability under demanding exhaust temperatures. Precision mandrel bending helps maintain consistent tubing diameter throughout the exhaust path, reducing unnecessary flow restrictions.
Designed specifically for use with the factory BMW M2 axle-back exhaust, this configuration allows owners to retain the original rear muffler and exhaust valve functionality while upgrading the center section of the exhaust.
Milltek utilizes the factory mounting locations and includes the necessary connection adapters for integration with the original exhaust. Installation requires cutting the factory exhaust at the appropriate connection point.
For G87 M2 owners seeking a more aggressive exhaust soundtrack without replacing the complete rear exhaust system, the Milltek Sport Non-Resonated 102mm Mid-Pipe provides a premium, large-diameter exhaust upgrade.
Fits 2023+ BMW M2 Coupe (G87)
Designed for the 3.0L S58 twin-turbocharged inline-six engine
Specifically designed to connect to the factory BMW axle-back exhaust
Replaces the factory secondary catalyst section
Retains the original rear muffler assembly
Retains factory rear exhaust valve hardware and control
Cutting of the factory exhaust is required for installation
Uses factory mounting locations and hangers
Compatible with the factory upstream exhaust configuration
Does not include a replacement rear muffler or exhaust tips
Not the X-pipe version
Not intended for direct connection to the Milltek axle-back exhaust; a separate configuration is available
Race product — not E-marked
Secondary catalyst removal may violate emissions regulations; intended for permitted competition or off-road applications
Professional installation recommended
Milltek 102mm single non-resonated mid-pipe
Left center silencer bypass pipe
Right center silencer bypass pipe
Factory axle-back connection adapters
Replacement chassis brace
Vehicle-specific fitting components
Manufacturer: Milltek Sport
Part Number: SSXBM1329
Product Type: Non-Resonated Performance Mid-Pipe
Vehicle Application: BMW G87 M2
Engine: 3.0L S58 Twin-Turbocharged Inline-Six
Mid-Pipe Diameter: 102mm / 4 Inches
Manufacturer Listed Diameter: 101.60mm
Exhaust Material: T304L Stainless Steel
Exhaust Configuration: Single Large-Diameter Mid-Pipe
Resonator Configuration: Non-Resonated
Factory Axle-Back Compatibility: Yes
Milltek Axle-Back Compatibility: Requires Different Configuration
Secondary Catalyst Replacement: Yes
Factory Rear Exhaust Valve Retention: Yes
Construction: Mandrel Bent
Finish: Hand-Finished Stainless Steel
Installation: Factory Exhaust Cutting Required
Estimated Installation Time: 1.5–2 Hours
E-Marked: No
Product Classification: Race Product
Manufacturer Component References:
F5161 — Adapters to OE System
F7107 — Chassis Brace
MSBM425 — Left Center Silencer Bypass
MSBM426 — Right Center Silencer Bypass
MSBM438 — 102mm Single Mid-Pipe
Large-diameter 102mm single mid-pipe provides a freer-flowing exhaust path, replacing the restrictive factory secondary catalyst section and supporting improved exhaust efficiency.
Aggressive non-resonated sound enhances the BMW S58 engine's exhaust character, producing a louder, more pronounced tone during acceleration.
Retains the factory axle-back exhaust, allowing owners to improve the center exhaust section without purchasing a complete cat-back system.
Premium T304L stainless-steel construction provides excellent corrosion resistance and long-term durability under demanding operating conditions.
Precision mandrel-bent tubing maintains consistent exhaust diameter and smooth transitions to minimize unnecessary flow restrictions.
Vehicle-specific installation components include factory axle-back adapters, center silencer bypass sections, and a replacement chassis brace for proper fitment.
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