21 Sidewinder – High-Performance 2-Into-1 Exhaust for Harley Sportster

from $995.00

The 21 Sidewinder Sportster Exhaust is a refined version of our original Sidewinder design, engineered for maximum performance, durability, and sound optimization.

Featuring a smooth 2-into-1 merge collector and a resonated stainless steel muffler, the 21 Sidewinder enhances horsepower, torque, and overall exhaust efficiency while producing a deep, aggressive exhaust note.

Each system is handcrafted from 304 stainless steel to withstand the elements, ensuring rust resistance and long-term reliability. The internally ceramic-coated tubing helps reduce external heat, making it an ideal choice for both daily riders and performance enthusiasts.

Designed to fit all Harley-Davidson Sportster models (1986+), this exhaust works seamlessly with forward controls, mid controls, and rearsets.

For EFI Sportsters (2007-2020+), O2 bungs are required unless using O2 eliminators, ensuring optimal air/fuel ratio management through the ECM.

Specifications:

  • Material: Mandrel-bent 304 stainless steel for superior strength and corrosion resistance

  • Coating: Internally ceramic-coated for enhanced heat control

  • Diameter: 1.75” at the flange, stepped to 2”, then expanding to a 3” outlet on the muffler

  • Muffler Type: Resonated stainless steel muffler for improved sound tuning

  • O2 Sensor Bungs: Optional for EFI Sportsters (2007-2020+)

  • Flange Kit: Integrated flange kit for hassle-free installation—no need for OEM snap-ring flanges

  • Fitment: Works with mid, forward, and rear-set controls

  • Shipping: Worldwide shipping available

O2 Bungs:
Integrated Flanges:
Quantity:
Add To Cart

The 21 Sidewinder Sportster Exhaust is a refined version of our original Sidewinder design, engineered for maximum performance, durability, and sound optimization.

Featuring a smooth 2-into-1 merge collector and a resonated stainless steel muffler, the 21 Sidewinder enhances horsepower, torque, and overall exhaust efficiency while producing a deep, aggressive exhaust note.

Each system is handcrafted from 304 stainless steel to withstand the elements, ensuring rust resistance and long-term reliability. The internally ceramic-coated tubing helps reduce external heat, making it an ideal choice for both daily riders and performance enthusiasts.

Designed to fit all Harley-Davidson Sportster models (1986+), this exhaust works seamlessly with forward controls, mid controls, and rearsets.

For EFI Sportsters (2007-2020+), O2 bungs are required unless using O2 eliminators, ensuring optimal air/fuel ratio management through the ECM.

Specifications:

  • Material: Mandrel-bent 304 stainless steel for superior strength and corrosion resistance

  • Coating: Internally ceramic-coated for enhanced heat control

  • Diameter: 1.75” at the flange, stepped to 2”, then expanding to a 3” outlet on the muffler

  • Muffler Type: Resonated stainless steel muffler for improved sound tuning

  • O2 Sensor Bungs: Optional for EFI Sportsters (2007-2020+)

  • Flange Kit: Integrated flange kit for hassle-free installation—no need for OEM snap-ring flanges

  • Fitment: Works with mid, forward, and rear-set controls

  • Shipping: Worldwide shipping available

The 21 Sidewinder Sportster Exhaust is a refined version of our original Sidewinder design, engineered for maximum performance, durability, and sound optimization.

Featuring a smooth 2-into-1 merge collector and a resonated stainless steel muffler, the 21 Sidewinder enhances horsepower, torque, and overall exhaust efficiency while producing a deep, aggressive exhaust note.

Each system is handcrafted from 304 stainless steel to withstand the elements, ensuring rust resistance and long-term reliability. The internally ceramic-coated tubing helps reduce external heat, making it an ideal choice for both daily riders and performance enthusiasts.

Designed to fit all Harley-Davidson Sportster models (1986+), this exhaust works seamlessly with forward controls, mid controls, and rearsets.

For EFI Sportsters (2007-2020+), O2 bungs are required unless using O2 eliminators, ensuring optimal air/fuel ratio management through the ECM.

Specifications:

  • Material: Mandrel-bent 304 stainless steel for superior strength and corrosion resistance

  • Coating: Internally ceramic-coated for enhanced heat control

  • Diameter: 1.75” at the flange, stepped to 2”, then expanding to a 3” outlet on the muffler

  • Muffler Type: Resonated stainless steel muffler for improved sound tuning

  • O2 Sensor Bungs: Optional for EFI Sportsters (2007-2020+)

  • Flange Kit: Integrated flange kit for hassle-free installation—no need for OEM snap-ring flanges

  • Fitment: Works with mid, forward, and rear-set controls

  • Shipping: Worldwide shipping available

Fitment:

Designed for Harley-Davidson Sportster models (1986+)

Compatible with mid, forward, and rear-set control setups

O2 bungs required for EFI models (2007-2020+) unless using O2 eliminators

Why Choose the 21 Sidewinder Sportster Exhaust?

Smooth 2-Into-1 Merge Collector – Enhances exhaust flow for optimal power delivery

Resonated Muffler Design – Produces a deep, aggressive exhaust tone without excessive drone

Handcrafted 304 Stainless Steel – Corrosion-resistant and built for lifetime durability

Internally Ceramic-Coated – Minimizes heat exposure while maintaining performance

Perfect Fit for Sportsters – Works with forwards, mids, and rearsets

Easy Installation with Integrated Flange Kit – No OEM snap-ring flanges required

Made for Performance Riders – Designed for power, efficiency, and sound balance

Worldwide Shipping Available – Get it delivered to your doorstep, no matter where you ride

FAQs

Q: Will this exhaust fit my Sportster?

A: Yes! The 21 Sidewinder Exhaust is designed for all 1986+ Harley-Davidson Sportster models.

Q: Do I need O2 bungs for my motorcycle?

A: If your Sportster is EFI (2007-2020+), O2 bungs are required unless you’re using O2 eliminators.

Q: What makes the 21 Sidewinder different from the original Sidewinder?

A: The 21 Sidewinder features a resonated muffler for a more refined sound while maintaining the performance gains of the original Sidewinder.

Q: What’s the turnaround time for this exhaust?

A: Since this is a made-to-order exhaust, the turnaround time is typically 2-4 weeks.

Q: How do I get an accurate time frame for my order?

A: Email support@kineticmotorcycles.com to check the current production queue.