Flatline – 2-Into-1 Performance Exhaust for Harley Sportster
The Flatline Exhaust is designed for riders who want a clean, linear design with top-tier performance and sound. Featuring a 0-degree straight-line construction, this 2-into-1 system delivers a deep, aggressive tone while optimizing power and throttle response.
Constructed from hand-TIG welded 304 stainless steel, the Flatline Exhaust ensures maximum durability, corrosion resistance, and a lightweight profile. The internally ceramic-coated tubing reduces external heat exposure for a cooler ride experience.
For tuning flexibility, this system includes an optional fiberglass-wrapped internal baffle, allowing you to adjust sound output and airflow based on your preferred tuning setup.
With O2 sensor bungs included for EFI Sportsters (2007-2022+), this exhaust is fully compatible with both carbureted and fuel-injected models. Riders can also customize their exhaust tip style, choosing from 45°, 90°, slash cut, or straight tips for a personalized aesthetic.
*Not passenger-friendly due to its linear design.
Specifications:
Material: Mandrel-bent 304 stainless steel, hand-TIG welded
Coating: Internally ceramic-coated for heat control
Diameter: Starts at 1.75" at the flange, expanding to 2" at the exit
Baffle Options: Optional fiberglass-wrapped internal baffle for sound tuning
Muffler Tip Options: 45°, 90°, slash cut, teardrop, or straight tips
O2 Sensor Bungs: Required for EFI models (2007-2022+), unless using O2 eliminators
Flange Kit: Integrated flange kit included – no need for OEM snap-ring flanges
The Flatline Exhaust is designed for riders who want a clean, linear design with top-tier performance and sound. Featuring a 0-degree straight-line construction, this 2-into-1 system delivers a deep, aggressive tone while optimizing power and throttle response.
Constructed from hand-TIG welded 304 stainless steel, the Flatline Exhaust ensures maximum durability, corrosion resistance, and a lightweight profile. The internally ceramic-coated tubing reduces external heat exposure for a cooler ride experience.
For tuning flexibility, this system includes an optional fiberglass-wrapped internal baffle, allowing you to adjust sound output and airflow based on your preferred tuning setup.
With O2 sensor bungs included for EFI Sportsters (2007-2022+), this exhaust is fully compatible with both carbureted and fuel-injected models. Riders can also customize their exhaust tip style, choosing from 45°, 90°, slash cut, or straight tips for a personalized aesthetic.
*Not passenger-friendly due to its linear design.
Specifications:
Material: Mandrel-bent 304 stainless steel, hand-TIG welded
Coating: Internally ceramic-coated for heat control
Diameter: Starts at 1.75" at the flange, expanding to 2" at the exit
Baffle Options: Optional fiberglass-wrapped internal baffle for sound tuning
Muffler Tip Options: 45°, 90°, slash cut, teardrop, or straight tips
O2 Sensor Bungs: Required for EFI models (2007-2022+), unless using O2 eliminators
Flange Kit: Integrated flange kit included – no need for OEM snap-ring flanges
The Flatline Exhaust is designed for riders who want a clean, linear design with top-tier performance and sound. Featuring a 0-degree straight-line construction, this 2-into-1 system delivers a deep, aggressive tone while optimizing power and throttle response.
Constructed from hand-TIG welded 304 stainless steel, the Flatline Exhaust ensures maximum durability, corrosion resistance, and a lightweight profile. The internally ceramic-coated tubing reduces external heat exposure for a cooler ride experience.
For tuning flexibility, this system includes an optional fiberglass-wrapped internal baffle, allowing you to adjust sound output and airflow based on your preferred tuning setup.
With O2 sensor bungs included for EFI Sportsters (2007-2022+), this exhaust is fully compatible with both carbureted and fuel-injected models. Riders can also customize their exhaust tip style, choosing from 45°, 90°, slash cut, or straight tips for a personalized aesthetic.
*Not passenger-friendly due to its linear design.
Specifications:
Material: Mandrel-bent 304 stainless steel, hand-TIG welded
Coating: Internally ceramic-coated for heat control
Diameter: Starts at 1.75" at the flange, expanding to 2" at the exit
Baffle Options: Optional fiberglass-wrapped internal baffle for sound tuning
Muffler Tip Options: 45°, 90°, slash cut, teardrop, or straight tips
O2 Sensor Bungs: Required for EFI models (2007-2022+), unless using O2 eliminators
Flange Kit: Integrated flange kit included – no need for OEM snap-ring flanges
Fitment:
Designed for Harley-Davidson Sportster models (1986-2022+)
Works with rearsets, mid-controls, and forward controls
O2 bungs required for EFI models (2007-2022+), unless using O2 eliminators
Why Choose the Flatline Sportster Exhaust?
Linear 0-Degree Design – Offers a sleek, modern look with optimal performance
2-Into-1 System – Maximizes exhaust flow for increased horsepower and torque
Hand-TIG Welded 304 Stainless Steel – Built for strength, durability, and corrosion resistance
Internally Ceramic-Coated – Reduces external heat for a cooler ride
Optional Fiberglass-Wrapped Baffle – Customize sound levels and tuning
Customizable Tips – Choose from 45°, 90°, slash cut, teardrop, or straight tips
Integrated Flange Kit – No need to reuse OEM snap-ring flanges
Worldwide Shipping Available – Delivered straight to your garage
FAQs
Q: Will this exhaust fit my Sportster?
A: Yes, the Flatline Exhaust fits Harley-Davidson Sportster models from 1986-2022+, including all trims and configurations.
Q: Do I need O2 bungs for my bike?
A: Yes, if your Sportster is EFI (2007-2022+), O2 bungs are required unless you're running O2 eliminators.
Q: What tip options are available?
A: Choose from 45°, 90°, slash cut, teardrop, or straight tips for a customized look.
Q: Does this exhaust come with a baffle?
A: The Flatline Exhaust offers an optional fiberglass-wrapped internal baffle, which helps to reduce noise and airflow based on your tuning preferences.
Q: How long does it take to ship?
A: Since this is a made-to-order exhaust, the turnaround time is typically 2-4 weeks.
Q: How do I check the current production queue?
A: Email contact@kineticmotorcycles.com for the latest production updates.