aFe 49-36355-B MACH Force-Xp Axle-Back Exhaust Black Tips for BMW 228i F44 21-24

Vehicle Fitment

• 2021-2024 BMW 228i Gran Coupe (F44), L4-2.0L (t) B46, xDrive AWD

Fitment Notes

• Fits the BMW 228i Gran Coupe (F44) platform only - does not fit the M235i Gran Coupe (F44).
• The F44 228i Gran Coupe was sold exclusively with xDrive AWD in the US market for the 2021-2024 model years.
• This system replaces the factory exhaust valve and muffler section. The OE exhaust valve motor is not required for operation and is not included.
• Some cutting of the factory exhaust pipe may be required - refer to the included instruction sheet for specific details.
• Does not fit the BMW M235i Gran Coupe (F44) - that model uses a separate, higher-output powertrain configuration.

Features

• MACH Force-Xp axle-back exhaust system purpose-engineered for the 2021-2024 BMW 228i Gran Coupe (F44) with the B46 turbocharged 2.0L engine.
• Dyno-proven performance gains of up to +9 HP and +9 lbs. x ft. TQ over the factory exhaust system.
• Constructed from 3 IN to 2-1/2 IN mandrel-bent brushed 304 stainless steel tubing for maximum flow, strength, and corrosion resistance.
• High-flow 304 stainless steel polished muffler produces a powerful, performance-oriented exhaust note with zero freeway drone.
• Removes the factory exhaust valve assembly to maximize exhaust flow and eliminate factory-imposed flow restrictions.
• Finished with dual 4-1/2 IN diameter black 304 stainless steel clamp-on exhaust tips featuring a laser-etched aFe POWER logo for a bold, aggressive look.
• Utilizes factory-style hangers, mounting directly to OE mounting locations for a secure, rattle-free installation.
• 100% MIG-welded construction for race-proven strength and long-term durability under high-heat, high-vibration conditions.
• Computer-aided design (CAD) technology ensures precise, high-tolerance fitment to the F44 platform's exhaust routing and bumper cutouts.

Specifications

• Part Number: 49-36355-B
• Series: MACH Force-Xp
• System Type: Axle-Back
• Tubing Material: Brushed 304 Stainless Steel
• Inlet Tubing Diameter: 3 IN
• Outlet / Tailpipe Diameter: 2-1/2 IN
• Muffler Material: 304 Stainless Steel (high-flow, polished finish)
• Tip Quantity: 2
• Tip Diameter: 4-1/2 IN (outlet)
• Tip Style: Round, clamp-on, single-wall
• Tip Material: 304 Stainless Steel
• Tip Finish: Black with laser-etched aFe POWER logo
• Exhaust Valve: Factory valve removed/replaced - OE valve motor not required or included
• Dyno-Proven Gains: Up to +9 HP / +9 lbs. x ft. TQ
• Installation: Factory-style hangers and mounting locations; some cutting may be required
• CARB EO#: Not required

Included Components

• 1x Axle-back exhaust system (3 IN to 2-1/2 IN mandrel-bent brushed 304 stainless steel tubing)
• 1x High-flow 304 stainless steel polished muffler
• 2x 4-1/2 IN black 304 stainless steel clamp-on exhaust tips (laser-etched aFe POWER logo)
• 1x Hardware kit (factory-style hangers, band clamps, and necessary fasteners)

Product Description

The aFe POWER MACH Force-Xp 3 IN to 2-1/2 IN 304 Stainless Steel Axle-Back Exhaust System with Black Tips (PN 49-36355-B) is purpose-built for the 2021-2024 BMW 228i Gran Coupe (F44) equipped with the turbocharged 2.0L B46 engine. This system replaces the restrictive factory muffler and exhaust valve section with mandrel-bent brushed 304 stainless steel tubing and a high-flow polished stainless muffler, delivering dyno-proven gains of up to +9 horsepower and +9 lbs. x ft. of torque over the stock system. By removing the factory exhaust valve - which limits flow at lower throttle positions - the system allows exhaust gases to exit more freely at all throttle inputs, delivering a richer, more performance-oriented exhaust tone that the stock 228i's muffled factory system simply cannot produce.

The dual 4-1/2 IN black 304 stainless steel clamp-on tips, each bearing a laser-etched aFe POWER logo, fill the factory bumper cutouts with a commanding, aggressive presence. The stepped tubing design - flowing from a 3 IN inlet down to 2-1/2 IN tailpipes - increases exhaust velocity for a broader torque delivery across the RPM range, complementing the B46's already strong low-end turbo power. The entire system mounts to factory hanger locations for a secure, vibration-free fit, and some cutting of the factory exhaust section may be required during installation - full step-by-step instructions are included in the kit.

This system is engineered exclusively for the BMW 228i Gran Coupe (F44) and is not compatible with the higher-performance M235i Gran Coupe variant. Built to aFe POWER's exacting standards and manufactured at their Corona, California facility, every weld and bend is quality-controlled for precise fitment and lasting durability. The brushed 304 stainless steel construction withstands the thermal cycling, road salt, and moisture exposure that come with long-term daily driving, ensuring the system looks and performs as intended for years to come. For 228i Gran Coupe owners looking to sharpen their car's exhaust note, unlock hidden performance, and add an assertive blacked-out tip style, the MACH Force-Xp axle-back is the definitive bolt-on upgrade.