GPR Exhaust Systems: A Complete Buyer's Guide for Motorcycle Enthusiasts

by Euro Motards Performance

If you've been shopping for an aftermarket motorcycle exhaust, you've likely come across GPR — the Italian manufacturer that's been producing high-performance exhaust systems since 1988. Based in Italy, GPR (Gruppo Produttori Ricambi) has built a strong reputation across Europe for quality slip-on and full exhaust systems that offer real performance and a distinctive sound without breaking the bank.

Why Choose GPR?

GPR occupies a sweet spot in the exhaust market: they offer a genuine performance improvement over stock systems at a price point below the premium tier brands. Their systems are manufactured in Italy and comply with European homologation standards, making them a legal road-use option in most markets when purchased in the street-legal configuration.

Key reasons riders choose GPR:

  • Italian craftsmanship — TIG-welded stainless steel construction with attention to fit and finish
  • Wide fitment range — GPR makes systems for hundreds of motorcycle models, from naked street bikes to adventure tourers and off-road bikes
  • Multiple series — Different product lines to suit different aesthetics and budgets
  • Sound — Deeper, more characterful tone than stock without drone at motorway speeds

GPR Product Series Overview

Trioval / M3 Inox

The Trioval is GPR's entry-level stainless steel slip-on. It features GPR's signature triangular-section canister, which is compact and lightweight. The M3 Inox is similar but with a more conventional round profile. Both are good value choices for riders who want an improvement over stock without spending on premium materials.

Furore Nero

The Furore Nero uses a carbon fibre end cap over a stainless steel body — a popular visual choice that adds a track-day aesthetic. It produces a noticeably sportier sound than the Trioval.

GPE Ann / Decatalizzatore

These are race-oriented systems. The decatalizzatore (de-cat) removes the catalytic converter for track use, resulting in better flow and more power. These are not road-legal in most jurisdictions and should only be used on closed circuits.

Dual Slip-On Systems

For bikes with twin-exit configurations — popular on Ducati, Aprilia, and some BMW models — GPR produces dual slip-on setups that replace both cans for a symmetrical, clean look.

GPR for Adventure Bikes: BMW GS Series

GPR has an extensive range for the BMW GS family, including the F800 GS, F700 GS, and G650 GS. The adventure riding community values GPR systems for the weight saving over stock and the improved sound character. For a detailed look at BMW GS exhaust options, see our guide: Best Exhaust Upgrades for the BMW F800 GS and G650 GS.

GPR for KTM Duke

The KTM Duke range (125, 250, 390, 690) is one of the most popular GPR applications — particularly the Duke 390, where the GPR Furore Carbon Fibre slip-on transforms the bike's sound character dramatically. See our dedicated guide: KTM Duke Exhaust Upgrades: Best Slip-On Options.

How to Choose the Right GPR System

When selecting a GPR exhaust, consider the following:

  • Road-legal vs. race — Check whether the system comes with an EC approval certificate if you need road legality. GPR's homologated systems include this documentation.
  • Slip-on vs. full system — A slip-on replaces only the muffler and is easier to fit, while a full system offers maximum performance gains.
  • Material — Stainless steel is the most durable and affordable. Titanium is lighter but more expensive.
  • Fitment year — GPR systems are model and year-specific. Always check the application list carefully.

Not sure which type of system is right for your bike? Read our general guide: How to Choose an Aftermarket Motorcycle Exhaust.

Installation Tips

GPR slip-ons are generally straightforward to install — most require only basic tools and take under an hour. A few things to note:

  • Allow the exhaust to cool completely before installation or removal
  • Use new exhaust gaskets if replacing a full system
  • Stainless steel will develop a natural heat discolouration after use — this is normal
  • For full systems on fuel-injected bikes, a fuel controller or ECU remap is recommended to take full advantage of the improved flow

Browse our full range of GPR exhaust systems and other aftermarket exhausts at Euro Motards Performance.

Back to News