The typical airflow pattern of the wake from most windscreens is called a van Karman vortex. At speeds of 50-90 mph, the air swirls off the windscreen in an approximate 90-degree segment of rotation, hits the bottom of the rider's neck on the way up, and curves off the shoulder at approximately 45 degrees. We gave the VStream® its name for the shape it takes at the upper edge. The patented "V" shape is so quiet because it pushes this vortex out and away from the side of the rider's head. The rider's helmet then resides in still air, and the passenger's environment is greatly improved as well.
The National Cycle N20409 VStream 9.5-inch Light Smoke Windscreen is designed to help improve airflow management for compatible Harley-Davidson touring motorcycles. Its patented V-shaped upper edge redirects the airflow vortex away from the sides of the rider’s head, helping create a quieter riding environment. The design also improves the passenger’s airflow environment.
Constructed from thick, durable hard-coated Lexan polycarbonate, this windscreen features National Cycle’s exclusive scratch-resistant Quantum hard coating. It replaces the stock windscreen and uses the OEM mounting hardware for installation. The N20409 fits select 2014–2017 Harley-Davidson Electra Glide Ultra Classic, Electra Glide Ultra Classic Low, Electra Glide Ultra Limited Low, and Tri Glide Ultra Classic models.
Made in the USA, the National Cycle N20409 VStream windscreen includes an exclusive 3-year warranty.
Features:
- VStream aerodynamic shape redirects airflow vortices away from the rider’s head
- Designed to improve the airflow environment for both rider and passenger
- Constructed from thick, durable hard-coated Lexan polycarbonate
- Finished with National Cycle’s scratch-resistant Quantum hard coating
- Replaces the stock windscreen and uses OEM mounting hardware
- Fits select 2014–2017 Harley-Davidson touring models listed in the product data
- Includes an exclusive 3-year warranty
- Made in the USA
Fitment:
Harley Davidson FLH Electra Glide 2021
Harley Davidson FLHT Electra Glide 2019
Harley Davidson FLHT Electra Glide 2020
Harley Davidson FLHTCU Electra Glide Ultra Classic 2014
Harley Davidson FLHTCU Electra Glide Ultra Classic 2015
Harley Davidson FLHTCU Electra Glide Ultra Classic 2016
Harley Davidson FLHTCU Electra Glide Ultra Classic 2017
Harley Davidson FLHTCU Electra Glide Ultra Classic 2018
Harley Davidson FLHTCU Electra Glide Ultra Classic 2019
Harley Davidson FLHTCUL Electra Glide Ultra Classic Low 2015
Harley Davidson FLHTCUL Electra Glide Ultra Classic Low 2016
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2014
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2015
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2016
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2017
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2018
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2019
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2020
Harley Davidson FLHTCUTG Tri Glide Ultra Classic 2021
Harley Davidson FLHTCUTGSE CVO Tri Glide 2020
Harley Davidson FLHTCUTGSE CVO Tri Glide 2021
Harley Davidson FLHTK Electra Glide Ultra Limited 2014
Harley Davidson FLHTK Electra Glide Ultra Limited 2015
Harley Davidson FLHTK Electra Glide Ultra Limited 2016
Harley Davidson FLHTK Electra Glide Ultra Limited 2017
Harley Davidson FLHTK Electra Glide Ultra Limited 2018
Harley Davidson FLHTK Electra Glide Ultra Limited 2019
Harley Davidson FLHTK Electra Glide Ultra Limited 2020
Harley Davidson FLHTK Electra Glide Ultra Limited 2021
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2015
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2016
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2017
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2018
Harley Davidson FLHTKL Electra Glide Ultra Limited Low 2019
Harley Davidson FLHTKSE CVO Limited 2014
Harley Davidson FLHTKSE CVO Limited 2015
Harley Davidson FLHTKSE CVO Limited 2016
Harley Davidson FLHTKSE CVO Limited 2017
Harley Davidson FLHTKSE CVO Limited 2018
Harley Davidson FLHTKSE CVO Limited 2019
Harley Davidson FLHTKSE CVO Limited 2020
Harley Davidson FLHTKSE CVO Limited 2021
Harley Davidson FLHX Street Glide 2014
Harley Davidson FLHX Street Glide 2015
Harley Davidson FLHX Street Glide 2016
Harley Davidson FLHX Street Glide 2017
Harley Davidson FLHX Street Glide 2018
Harley Davidson FLHX Street Glide 2019
Harley Davidson FLHX Street Glide 2020
Harley Davidson FLHX Street Glide 2021
Harley Davidson FLHXS Street Glide Special 2014
Harley Davidson FLHXS Street Glide Special 2015
Harley Davidson FLHXS Street Glide Special 2016
Harley Davidson FLHXS Street Glide Special 2017
Harley Davidson FLHXS Street Glide Special 2018
Harley Davidson FLHXS Street Glide Special 2019
Harley Davidson FLHXS Street Glide Special 2020
Harley Davidson FLHXS Street Glide Special 2021
Harley Davidson FLHXSE CVO Street Glide 2015
Harley Davidson FLHXSE CVO Street Glide 2016
Harley Davidson FLHXSE CVO Street Glide 2017
Harley Davidson FLHXSE CVO Street Glide 2018
Harley Davidson FLHXSE CVO Street Glide 2019
Harley Davidson FLHXSE CVO Street Glide 2020
Harley Davidson FLHXSE CVO Street Glide 2021
