Flatline – 2-Into-1 Performance Exhaust for Harley Sportster

from $500.00

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

O2 Bungs:
Integrated Flanges:
Baffle:
Custom Tip:

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.