Dinan Free Flow Axle-Back Exhaust - BMW 335i/335xi (E90) 2007-2011 - Polished Tips

Dinan's Free Flow axle-back exhaust for the E90 335i improves flow by reducing back pressure for a measured gain of 6 horsepower and 5 lb-ft at 6600 RPM. It is built from 100% 304 stainless steel and mounts to the factory hangers and brackets for a direct fit, resisting corrosion while shedding weight versus stock. Drone abatement tuning keeps the cabin civilized at cruise, while harder acceleration brings a louder, sportier tone. The system finishes with dual 3.5 inch laser engraved polished stainless tips.

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