Cobra Speedster 909: Performance Shotgun Pipes for the 2006-2011 Dyna

The Cobra Speedster 909 for 2006-2011 Harley-Davidson Dyna models—including the Street Bob, Low Rider, Wide Glide, and Super Glide—is the definitive upgrade for riders who want their bike to look like a classic chopper but perform like a modern racer. This system takes the popular Speedster Short design and updates it with a larger, more aggressive profile. The pipes expand from 3 inches at the front to 3.5 inches at the rear, creating a brawny silhouette that fills out the side of the Dyna frame perfectly. But the real magic happens inside the pipes. The Speedster 909 features Cobra’s patented PowerPort technology, a hidden crossover that allows the exhaust pulses from one cylinder to help scavenge the other. This engineering feat provides the low-end torque and mid-range “punch” usually reserved for 2-into-1 systems while maintaining the clean, symmetrical lines of a 2-into-2 shotgun setup.

Engineered for Sound and Durability

Sound is a critical part of the Dyna experience, and the Speedster 909 does not disappoint. It utilizes 2-inch constant velocity cores wrapped in a combination of bonded e-glass and stainless steel mesh. This construction creates a deep, resonant rumble at idle that transitions into a sharp, mechanical “bark” when you twist the throttle. Unlike cheaper exhaust systems that can sound “tinny” or thin at high RPMs, the Speedster 909 maintains a full-bodied, high-fidelity exhaust note. To protect that sound and your investment, Cobra includes full-length, 222-degree heat shields. These shields act as a thermal barrier, ensuring that the intense heat of the Twin Cam engine doesn’t discolor the finish, whether you choose the show-quality Chrome or the tactical Raven Black.

Expert Tuning & Installation Advice

As V-Twin specialists, we’ve installed hundreds of Cobra systems on the Dyna platform. Pro Tip: The 2006-2011 Twin Cam models were the first to feature 46mm throttle bodies and 02 sensors; because this system flows significantly more air than stock, a fuel tuner is essential. We recommend the Vance & Hines Fuelpak FP3 or Cobra Fi2000R to optimize the air-fuel ratio, which prevents the “popping” on deceleration and keeps your engine running cooler. Installation Note: When installing on models with mid-controls, ensure the heat shield clamps are clocked correctly to avoid interference with the brake pedal linkage. Always use a fresh set of standard tapered exhaust gaskets for this specific year range to ensure a leak-free seal at the exhaust port.

The Classic Hot-Rod Aesthetic

The Cobra Speedster 909 isn’t just an exhaust; it’s a visual transformation. The rolled tips and expanded muffler bodies give the bike a custom, high-performance look that screams American muscle. Whether you are building a “blacked-out” bobber or a chrome-heavy cruiser, the 909 provides the perfect finishing touch. With its combination of class-leading power, deep sound, and blue-proof durability, the Cobra Speedster 909 remains one of the best-selling exhaust systems for the 2006-2011 Dyna era.

Fitment Note: Fits 2006-2011 Dyna models. Note that 2006 models may require O2 sensor bungs to be plugged if running a non-EFI conversion. Includes all necessary mounting hardware and brackets.

Cobra Speedster 909 Exhaust For Harley Dyna

The brand new 909 Speedsters is one of the most affordable systems out there for your Harley, all while retaining the performance aspect. Cobra’s Speedster systems combine the traditional styling which staying up to date with modern technology thanks to the proprietary Cobra PowerPort.

Features:

• Combined traditional styling and modern performance technology
• Offers triple-chromed, shotgun-styled pipes
• Includes full length, 222° heat shields and a rolled tip
• Deliver power gains over stock that are among the highest, they come from the Cobra PowerPort, crossover technology, which helps increase overall power from idle to redline
• Power increases you normally experience with a 2-into-1 system while retaining the clean classic lines of a 2-into-2 system
• Made in the USA