Dinan Free Flow Axle-Back Exhaust - BMW 335i / 435i (F3x) 2012-2016 - Black Tips

This axle-back system swaps the factory rear section for free flowing 100 percent 304 stainless steel construction that lowers back pressure and returns 6 HP and 5 lb-ft at 6600 rpm. A Helmholtz chamber is designed into the system to cancel low rpm resonance, so the car stays civilized at cruise and only gets aggressive under hard acceleration. Twin 3.5 in laser engraved ceramic black tips finish it off, and the factory brackets and hangers are reused for factory like fitment.

Specifications

Documents: Installation Instructions (PDF)

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy