OVERVIEW
The aFe POWER MACH Force-Xp cat-back exhaust system was developed for the N55-powered F30 335i and F32/F33 435i. In aFe's in-house dyno testing the system produced a maximum gain of +4 horsepower and +5 lbs. x ft. of torque. Tube diameters and lengths were engineered to maximize performance across the power band while maintaining a strong tone with an aggressive note on shifts.
Construction is 100% hand TIG-welded, mandrel-bent 304 stainless steel with a uniform brushed finish that resists corrosion. The system uses 3" tubing that merges into 2-1/2" tubing for maximum flow, and smooth-transition mandrel bends keep turbulence low. A true mitered merge collector eliminates the dead space that formed collectors tend to create, which would otherwise cause turbulence and hinder flow.
Dual free-flowing transverse mufflers absorb high-pitch tones to produce a powerful sound while unleashing all available horsepower and torque. The system finishes with dual aFe laser-etched 3.5" polished 304 stainless steel tips, and high-quality band clamps provide a complete 360-degree sealing surface. All factory hanger and mounting locations are used for a stable, hassle-free installation.
SPECS
- Maximum gains: +4 HP and +5 lbs. x ft. of torque, verified on aFe's in-house dyno
- Tubing: 3" merging into 2-1/2" mandrel-bent 304 stainless steel
- Construction: 100% hand TIG-welded 304 stainless steel with brushed finish
- Collector: true mitered merge design
- Mufflers: dual free-flowing transverse mufflers
- Tips: dual 3.5" polished 304 stainless steel with laser-etched aFe logos
- Clamps: high-quality band clamps for a full 360-degree sealing surface
- Mounting: uses all factory hanger locations
- Does not use the OEM exhaust valve
- Available with polished or black tips (see PART NUMBER)
PARTS INCLUDED
- Front mid-pipe — 05-45665
- Mid Y-pipe sub-assembly — 05-45669
- Muffler assembly with polished tips — 05-45870 (supplied with 49-36326-P)
- Muffler assembly with black tips — 05-45890 (supplied with 49-36326-B)
- 3" band clamps (x2) — 05-41055
- 2.5" band clamps (x2) — 05-41061
TECH RESOURCES
Required Extras
- None. aFe Power specifies no additional hardware for this part — all clamps are supplied and the factory hangers are reused.
- Installer supplies: standard metric hand tools, penetrating oil, and a lift or jack and jack stands.
- Optional service items: stainless-safe metal polish for the polished tips.
Installation
PART NUMBER
- 49-36326-P — 304 stainless steel with polished tips
- 49-36326-B — 304 stainless steel with black tips
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 |
This system does not retain the OEM exhaust valve.