ARM Downpipe for BMW E-Series (N55)

Overview

The ARM E-Series N55 Downpipe is designed to increase power and performance of your N55 equipped BMW by optimizing exhaust flow and reducing back pressure. Upgrading the downpipe on your N55 increases power, improves turbo spool, and allows you to run stage 2+ tuning, all while making your 135i or 335i sound better. The ARM N55 Downpipe is compatible with OEM and aftermarket midpipes, designed for a direct fit with the 80mm V-Band flange that accommodates both standard and upgraded turbo setups. An N55 downpipe upgrade is the first hardware upgrade every N55 owner should invest in for more power!

Details

Highlights

• Gain up to 21whp/27wtq
• Faster Turbo Spool
• Improved Exhaust Sound
• Upgrade to Stage 2+ Tuning
• SS304 Stainless Steel

Construction

• High-quality TIG welded SS304 stainless steel
• Of the ARM N55 Downpipe is the 4.5" middle section
• Two O2 sensor bungs to allow for reinstallation of the OEM oxygen sensors

What's in the Box

• ARM N55 Downpipe
• 2x Midpipe Gaskets
• 4x Bolts, Washers, and Nuts

Improved Exhaust Sound

In addition to helping your N55 make more power and torque, the ARM N55 Downpipe significantly improves the exhaust sound. Thanks to it's 4.5" middle section, the ARM N55 Downpipe will produce a deeper and more aggressive exhaust note, especially under full throttle and on cold starts.

Warranty & Off-Road Use

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.

Fitment

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