ARM Motorsports BMW E9X 335i 3.5" Resonated Midpipe

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HIGHLIGHTS

• 3.5" Single Midpipe Design
• Integrated Resonator for Refined Sound
• Improved Exhaust Flow
• Retains OEM Exhaust Valve Functionality

PROFILE

The factory BMW 335i midpipe uses a dual midpipe design which incorporates secondary catalysts which prioritizes noise control and mass production over performance and sound quality. The ARM 335i 3.5" Single Midpipe is designed to connect directly to the factory axle-back section, allowing full retention of the OEM exhaust valve controllers and factory valve operation. The ARM 335i 3.5" Resonated Single Midpipe prioritizes exhaust note and performance. The integrated resonator is carefully sized and positioned to reduce rasp and harsh frequencies commonly associated with straight-through midpipes, especially on N54 and N55 platforms.

CONSTRUCTION

This allows the midpipe to bolt directly to any downpipes that are designed to mate to the OEM 335i midpipe, including factory downpipes as well as most aftermarket downpipes that retain the OEM-style 2-bolt outlet configuration. It then transitions smoothly to the 3.5" single midpipe section. The resonator is designed to attenuate high-frequency and raspy exhaust notes commonly associated with turbocharged BMW engines, while preserving a deep, aggressive tone under acceleration. Towards the rear section of the ARM 335i 3.5" Midpipe splits back to a dual design to connect with the OEM axle-back exhaust section. By retaining the factory dual outlet layout at the rear, the ARM midpipe preserves full compatibility with the OEM axle-back and its integrated exhaust valve system. To allow for clearance of the OEM chassis brace, the ARM 335i 3.5" Resonated Midpipe includes two precision machined aluminum chassis brace spacers which allow extra space for the larger 3.5" ARM Midpipe to pass through to the axle-back section.

IN THE BOX

• 3.5" Single Midpipe Front Section
• 3.5" Single Midpipe Rear Section
• 2x Axle-Back Adapter Pipes
• 2x Chassis Brace Spacers
• 2x Downpipe Gaskets
• Mounting Hardware

RWD VEHICLES ONLY

ARM MOTORSPORTS LIFETIME WARRANTY

Backed by the ARM Motorsports Lifetime Warranty against defects in craftsmanship or fitment. See the full terms for details.

Off-road use only: This product is intended for racing vehicles and may be illegal for use on public roads in many states or provinces.