Bomiz BMW E9x 335i N54 N55 Valvetronic Catback Exhaust
Lifetime Warranty Guarantee Included
This one is on the next production run, shipping mid-September 2026. Ordering now holds your place in that batch. If the date ever moves you hear it from us first, and you can cancel for a full refund any time before it ships.
Free shipping in the USA
Questions before ordering? Call or text Brian, our founder.
Built to give the 335i the sound it was missing.
The E9X 335i has always been one of BMW’s great tuner platforms — torque-rich, responsive, and capable of becoming something far more emotional than its factory exhaust allows. The Bomiz E9X 335i Valvetronic Exhaust was built with that idea in mind: a system designed to bring more sound, more flow, and more feeling out of the N54/N55 without turning the car into something harsh or annoying to live with.
With our newest generation electronic valves, the system gives you control over the car’s personality. Closed, it stays refined and comfortable for normal driving. Open, it lets the turbo inline-six breathe with a sharper, more aggressive tone. The integrated X-pipe helps reduce drone and rasp while improving exhaust balance, giving the 335i a cleaner, more complete sound instead of just more noise.
Features
- Improved power and exhaust flow
- X-pipe design to help reduce drone and rasp
- Fully adjustable fitment for E9X 335i / 335i xDrive models
- Newest generation electronic valves
- Valved sound control for quiet cruising or aggressive sound on demand
- Designed to bring more emotion out of the BMW turbo inline-six platform
Specifications
- Built from 304 stainless steel
- High-quality TIG welding
- Dual 2.5-inch piping
- Adjustable 3.5-inch / 90mm single-wall tips with Bomiz logo
- Designed for HP and torque gains
- Compatible with N54 and N55 applications
Fitment
Fits BMW E9X 335i / 335i xDrive models, including:
- E90 335i / 335xi Sedan
- E92 335i / 335xi Coupe
- E93 335i Convertible
Compatible with N54 and N55 engine platforms.
Includes
- Valvetronic exhaust system
- Electronic valve system
- Adjustable 90mm Bomiz tips
- Necessary hardware and clamps
- Installation components where applicable
WARNING: Please note that certain aftermarket exhaust systems may not comply with applicable US (including California) laws and regulations, and may therefore be prohibited for use on highways or roads, or on roads or vehicles otherwise subject to emissions control requirements. California prohibits the use of any aftermarket exhaust system that modifies, removes or replaces original equipment catalysts, unless CARB has issued an Executive Order as to such part or system.
BOMIZ parts or exhaust systems/components used or intended for use on “racing vehicles” (i.e. a competition vehicle used exclusively for competition on closed-course circuits) do not require an exemption or Executive Order from CARB to be sold in California. However, such parts are prohibited from use on California public highways or roads, even if occasionally used “off-road.”
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