ROAD GLIDE ST EXHAUST | SLIP-ONS "4.5 INCHES" (2025)

The "4.5 Inches" slip-ons for the Harley-Davidson® Road Glide ST combine the style and technology typical of Officine Italiane Zard products with the tradition and charm of Milwaukee's iconic Touring bikes. 

Made entirely by hand in Italy, this pair of silencers is made of AISI 304 steel. They are available in different finishes: Black Chrome, Chrome, Black Cerakote®, with a billet anodized aluminum endcap and Zard nameplate.

In addition to the attractive look and deep sound, Zard slip-ons provide a +2.3 HP power increase.

Warning: after installing the Zard racing slip-on, the motorcycle’s ECU in E5 Plus configuration may detect a catalyst anomaly, triggering the catalytic converter warning light (informational). To prevent this warning light from activating, ECU remapping is required.