Harley-Davidson Street Glide and Road King Exhaust Guide

by Euro Motards

Upgrading the Exhaust on Your Harley Touring Model

The Street Glide and Road King sit at the pinnacle of the Harley-Davidson touring range. These are long-haul machines built for comfort and presence, and their exhaust note is a huge part of the identity. The stock Milwaukee-Eight exhaust is a competent unit but is heavily muffled to meet emissions standards — the result is a muted sound that doesn't do justice to a 107ci or 114ci V-twin. An aftermarket exhaust changes everything.

Euro Motards carries a selection of premium European exhaust systems specifically engineered for Harley Touring models, offering improved sound, better performance, and quality craftsmanship that lasts the distance.

The Milwaukee-Eight Engine: What to Expect from an Exhaust Upgrade

The Milwaukee-Eight 107 and 114 engines (introduced in 2017) respond very well to exhaust modifications. The stock system constrains exhaust flow, and a quality aftermarket system opens up the engine's breathing considerably. Typical gains from a full exhaust system with appropriate tuning are 8–15 hp and a meaningful improvement in torque across the entire rev range — which translates directly to effortless overtaking on touring rides.

For touring riders, the sound character also matters enormously. You want a deep, confident burble at idle that grows into a strong, authoritative note when you open the throttle. Not a harsh race pipe sound — a touring exhaust note that complements long-distance riding without causing fatigue.

Zard Touring Systems: Italian Craftsmanship for American Icons

Zard has developed specific exhaust systems for the Milwaukee-Eight Touring platform that strike the ideal balance between sound, performance, and touring-appropriate character. Their stainless steel headers are precision-formed for optimal flow, and the muffler design delivers the deep Harley tone that riders expect.

Zard Full System for Street Glide and Road King

The Zard full system for Milwaukee-Eight Touring models covers 2017 onwards, fitting Street Glide, Street Glide Special, Road King, Road King Special, Road Glide, and Ultra Classic variants. The 2-into-2 low configuration maintains the traditional Harley touring silhouette while dramatically improving exhaust flow. Available in stainless steel with optional carbon fibre muffler end caps for a premium finish.

Zard Slip-Ons for Touring Models

If you want to upgrade the sound of your touring Harley without changing the headers, Zard slip-on mufflers offer an easy, reversible solution. These bolt directly to the stock crossover pipe and are fully road-legal in homologated versions. Installation is achievable in 30–45 minutes, making them ideal for riders who want a quick improvement before a big trip.

GPR Systems for the Street Glide and Road King

GPR's approach to touring exhausts focuses on build quality and a refined sound profile. Their systems are designed with the touring rider in mind — durable construction that handles the heat cycles of long daily rides, and a sound tuned for enjoyment over thousands of kilometres rather than maximum aggression.

GPR Furore for Touring V-Twins

The GPR Furore series for Harley Touring models delivers a characterful V-twin sound without the harshness of race-oriented systems. The dark anodised finish on the Furore Nero variants complements the blacked-out styling popular on Street Glide and Road King Special models. Available in homologated form for road use across Europe.

Sound Levels and European Road Use

European noise regulations (typically 95 dB(A) for road use in most EU countries) apply to all motorcycles. Both Zard and GPR offer homologated exhaust variants that comply with these limits. If you're riding in noise-sensitive areas or attending touring rallies with noise checks, ensure you select the homologated variant. Race or open versions are available for track and private use.

Fitment Guide for Milwaukee-Eight Touring Models

  • Street Glide / Street Glide Special: 2017+ (Milwaukee-Eight 107 and 114)
  • Road King / Road King Special: 2017+ (Milwaukee-Eight 107)
  • Road Glide / Ultra Classic: 2017+ (Milwaukee-Eight 107 and 114)

For Twin Cam touring models (2007–2016), different fitment systems are available — contact us for specific recommendations.

Shop Touring Exhausts at Euro Motards

Give your Street Glide or Road King the exhaust note it deserves. Browse the full selection of touring-compatible exhaust systems from Zard, GPR, and other premium brands in our exhaust collection. Fast European shipping and expert support available.

Back to News