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.
| Type | Free Flow axle-back exhaust |
| Material | 100% 304 stainless steel |
| Tips | Dual 3.5" laser engraved |
| Tip Finish | Polished stainless |
| Power Gain | +6 HP, +5 lb-ft @ 6600 RPM |
| Part Number | D660-0012 |
Documents: Installation Instructions (PDF)
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2011 | BMW | 335i | Base |
| 2009-2011 | BMW | 335i xDrive | Base |
| 2007-2008 | BMW | 335xi | Base |
Shipping: In-stock orders placed before 3 PM EST ship the same day, and everything else ships within 24 hours. Standard, expedited, and overnight options are available at checkout. Backordered items ship as soon as we get them back in stock. Contact us for lead times. See the full Shipping Policy.
Returns: 30-day returns on new, unused items in original packaging. See the full Refund Policy.
