Harley Davidson Street Glide ST Decatalyzer Kit / Header Kit, MY 2017–2025

Zard has developed a beautiful racing Header Kit for the Harley-Davidson Street Glide ST. This decatalyzer kit replaces the original Header Kit, including the catalytic converter.

Available in satin stainless steel and titanium finishes.

This is a Header Kit without homologation.

The Header Kit is compatible with both the original silencers and the Zard slip-on silencers.

The original heat shields can also be used with the Zard Header Kit. See the installation video.

The Zard Header Kit is both lighter than the OEM Header Kit (-2.2 kg) and offers better performance (+2.9 PS).

Material:
AISI 304 stainless steel or high-quality titanium.

Fits all Grand American Touring and CVO models from MY 2017–2025
107, 114, 117, and 121-inch Milwaukee-Eight engines.

Performance:
Zard Decatalyzer Kit Racing: + 2.9 PS

Weights:
Stock Header Kit: 3.6 kg
Zard Decatalyzer Kit Stainless Steel: 2.3 kg
Zard Decatalyzer Kit Titanium: 1.4 kg

No changes to the mapping or engine settings are necessary after installation.

Feel free to contact us with any questions.