OVERVIEW
The aFe MACH Force-Xp exhaust system for the BMW N55 is offered here in both axle-back and cat-back form. Both configurations are built from 3" into 2-1/2" mandrel-bent, brushed 304 stainless steel tubing and are 100% hand TIG-welded by certified craftsmen for corrosion resistance, strength and freedom from cracking.
Exhaust flows through a high-flow transverse muffler finished in high-temperature black powder coat, and the system incorporates a factory-style exhaust valve that runs off the factory exhaust valve motor (not included) and the factory performance modes. With the valve closed the exhaust is routed through the muffler for a smooth, tuned note; with the valve open the exhaust bypasses the muffler to release the full sound and performance potential of the N55. aFe rates the cat-back system at up to +12 horsepower and +10 lbs. x ft. of torque.
The system is finished with dual 4" diameter 304 stainless steel tips carrying a laser-etched aFe POWER logo. High-quality band clamps provide a full 360-degree sealing surface, and all factory hanger locations are retained for a hassle-free installation.
SPECS
- +12 HP and +10 lbs. x ft. torque max gains (cat-back)
- 3" to 2-1/2" mandrel-bent, brushed-finish 304 stainless steel tubing
- 100% hand TIG-welded construction
- High-flow transverse muffler with high-temp black powder-coated finish and stamped aFe POWER logo
- Dual 4" diameter 304 stainless steel tips with laser-etched aFe POWER logo; polished or gloss black depending on variant
- Factory-style exhaust valve, operated by the factory exhaust valve motor (not included)
- Band clamps for a full 360-degree leak-free sealing surface
- Uses all factory hanger locations
- Optional resonator delete pipe available separately, aFe P/N 49-36622 (no cutting or fabrication required)
PARTS INCLUDED
- Axle-back (49-36336-P / 49-36336-B): muffler assembly — 05-145119 polished tips or 05-145120 black tips
- Axle-back: adaptor pipe tube 05-145122
- Axle-back: 3" band clamp 05-41055
- Axle-back: stainless steel T-bolt clamp 03-50292
- Cat-back (49-36340-B): muffler assembly 05-145120
- Cat-back: front pipe 05-45867
- Cat-back: resonated mid-pipe #1 05-145193
- Cat-back: mid-pipe #2 05-145406
- Cat-back: 3" band clamps 05-41055
TECH RESOURCES
Required Extras
- None. aFe specifies no additional hardware for this part — the system reuses the vehicle’s factory exhaust valve motor and all factory hanger locations.
- Optional, not required: aFe resonator delete pipe, P/N 49-36622 (sold separately; not currently stocked by Speed Logic).
Installation
- aFe POWER 49-36336-P / 49-36336-B axle-back installation instructions (PDF)
- aFe POWER 49-36340-P / 49-36340-B cat-back installation instructions (PDF)
PART NUMBER
- 49-36336-P — axle-back, polished tips
- 49-36336-B — axle-back, black tips
- 49-36340-B — cat-back, black tips
- 49-36340-P — cat-back, polished tips (aFe sibling variant)
VEHICLE APPLICATIONS
| Make / Model | Chassis | Engine | Years |
|---|---|---|---|
| BMW 335i | F30 | N55 3.0L Turbo I6 | 2012–2015 |
| BMW 335i xDrive | F30 | N55 3.0L Turbo I6 | 2013–2015 |
| BMW 435i | F32/F33 | N55 3.0L Turbo I6 | 2014–2016 |
| BMW 435i xDrive | F32/F33 | N55 3.0L Turbo I6 | 2014–2016 |
The table above reflects aFe’s fitment for the 49-36336 axle-back system. aFe’s 49-36340 cat-back instructions list the 2012–2015 BMW 335i (F30) N55; confirm cat-back fitment for your chassis with Speed Logic before ordering.