D&D 2-into-1 Diablo Gato Exhaust for 2009–2016 Harley-Davidson Touring Models (FLH / FLT)
Upgrade your touring bike’s power, sound, and style with the D&D 2-into-1 Diablo Gato Exhaust System, engineered specifically for 2009–2016 Harley-Davidson FLH and Harley-Davidson FLT models.
Built for riders who demand performance and aggressive tone, the Diablo Gato delivers measurable horsepower gains, increased low-end torque, and a deep, commanding exhaust note.
Key Features & Performance Benefits
Stepped 2-Into-1 Header Design
The Diablo Gato features a precision stepped header system:
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1 7/8" at the head
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Stepped to 2"
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Finished at 2 1/2" at the collector
This design optimizes exhaust scavenging, improves throttle response, and maximizes horsepower output.
Dyno-Tested Performance Gains
Every system is designed and dyno tested in-house using the Harley SE Tuner to ensure real-world performance results.
✔ Up to 12% increase in horsepower and torque with proper tuning
✔ Noticeable improvement in low-end pull and acceleration
Built for High-Performance Engines
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2 1/2" perforated baffle core supports engines up to 131”
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4" muffler housing for a deep, aggressive tone
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Designed to deliver strong mid-range power and top-end performance
Signature Diablo Gato Sound
At idle, the Diablo Gato produces a deep, boomy, full-bodied exhaust note with unmistakable character.
Under throttle, it transforms into a powerful, race-inspired growl that enhances the overall riding experience.
This is more than an exhaust system — it’s a statement.
Complete Installation Package
Each Diablo Gato full system includes:
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Full heat shields
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Exhaust gaskets
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Complete bolt kit
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Performance baffle
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12mm and 18mm O2 bungs (compatible with 2009–2016 touring models)
Interchangeable end-cap design
End caps are sold separately, allowing riders to customize the look and finish of their exhaust.
⚠ Important Notes
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Blueing and discoloration are caused by improper tuning and are not covered under warranty.
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Proper tuning is required to achieve optimal performance and prevent finish damage.
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D&D Performance Exhaust Systems are designed for closed-course racing applications only.
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Not for use on pollution-controlled vehicles.
- Price Includes Desired End Cap (Please Email After Purchase with Selection)
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Chrome End Cap Options:
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Chrome Straight Cut End Cap
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Chrome Fish Mouth End Cap
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Chrome Race Style End Cap
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Chrome 30° Angle Cut End Cap
Black End Cap Options:
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Black Straight Cut End Cap
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Black Fish Mouth End Cap
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Black Race Style End Cap
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Black 30° Angle Cut End Cap
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