Resonated Single Mid Pipe Kit for BMW F8X M3 M4 with S55 Engine by ARM MOTORSPORT USA

 • Fits OEM and Aftermarket Mufflers

PROFILE

Introducing the ARM Motorsports S55 Single Midpipe Upgrade for the F8X platform, the ultimate solution for S55 enthusiasts seeking to enhance the power and sound from their S55-powered BMW. This S55 Midpipe upgrade delivers improved exhaust flow and an incredible exhaust note due to the resonated 3.5" design. Check out the clips below to hear the ARM S55 Midpipe paired with the ARM S55 Resonated Downpipes.

CONSTRUCTION

Crafted from 304 stainless steel, the ARM S55 Midpipe Upgrade is built to last. Its mandrel-bent tubing ensures smooth, unrestricted flow, while the lightweight design of only 17lbs reduces overall weight of the exhaust system by 15lbs. Together with ARM S55 TRACK exhaust, you shave an incredible 40lbs off compared to the OEM exhaust system.

he ARM S55 Single Midpipe starts at the downpipe connections with a precision Y-pipe.  This allows you to connect the ARM S55 Midpipe to any downpipe upgrade that fits the OEM S55 Midpipe and ARM downpipes.

This section of the ARM S55 Midpipe includes a 4.5" resonator to tune the tone of the exhaust into a deeper, more desirable range, as the S55 is notorious for having a high-pitched, raspy exhaust note.  Paired with the ARM downpipes the ARM S55 Midpipe will make your F8X one of the best sounding on the road.  

The next section of the ARM S55 Midpipe Upgrade transitions again to a Y-pipe, which allows you to reconnect your OEM muffler.  This Y-pipe connects to the single midpipe with a slip-fit connection and then utilizes the two 2.5" pipes included in the ARM S55 Midpipe Upgrade to extend to the OEM rear muffler section, or to the ARM S55 Track Exhaust.

ue to the larger size of the ARM S55 Midpipe, the OEM under-brace cannot be utilized. To address this, the ARM S55 Midpipe includes a specially designed under-brace that is specifically engineered to fit with the larger midpipe.  The under brace included in the ARM S55 Midpipe Kit is designed with  precision and manufactured from 6061 aluminum to ensure strength, durability, and a perfect fit, while keeping the weight to a minimum.  Installation of the under brace is a simple bolt-on process and mounts directly to the factory mounting points, ensuring a secure and stable fit.

IN THE BOX

FITMENT GUIDE

ARM MOTORSPORTS LIFETIME WARRANTY

Every ARM Motorsports product is backed by a lifetime warranty which is automatically issued at the time of purchase. Your warranty protects you against any defects in craftsmanship or fitment. The warranty entitles you to a replacement unit.

This product is for Off-Road Use Only. Items sold for off-road use only are illegal to use on public roads in most states and provinces. This product is intended for racing vehicles which may never be used on a public road.