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