aFe MACH Force-XP Axle-Back Exhaust – BMW 340i/440i (F30/F32) B58

OVERVIEW

The aFe MACH Force-XP Axle-Back Exhaust gives the B58-powered F30 340i and F32 440i a deeper, more aggressive tone with an easy, bolt-on install — no mid-pipe work required. Built from mandrel-bent 304 stainless steel stepping from 3″ down to 2-1/2″, it replaces the rear section behind the axle and retains the factory-style exhaust valve for a civil cruise and an open note on demand. Finished with dual 4″ tips.

SPECS

• Max gains of +14 HP and +13 lb-ft of torque (aFe in-house dyno)
• Mandrel-bent 3″ to 2-1/2″ 304 stainless steel construction, 100% TIG-welded
• High-flow transverse muffler, high-temp powder-coated black finish
• Retains a factory-style exhaust valve (uses the factory valve motor — not included)
• Dual 4″ 304 stainless steel tips — gloss black or polished per selection
• Bolt-on axle-back install (rear section only); no cutting
• Does not require a CARB EO#

PARTS INCLUDED

• MACH Force-XP axle-back exhaust (rear muffler section and dual tips)
• Band clamps and mounting hardware

TECH RESOURCES

• Installation Instructions (PDF)
• Retains the factory exhaust valve — reuses the factory valve motor (not included)
• Want the fuller system? See our aFe MACH Force-XP Cat-Back (340i/440i)
• Pairs with our aFe Control Sway Bars (340i/440i)

PART NUMBER

• Black Tips — 49-36335-B
• Polished Tips — 49-36335-P

VEHICLE APPLICATIONS