GPR Furore-X Inox Slip-On Race Exhaust for the KTM 390 Duke 2021-2023

The GPR Furore-X Inox slip-on fits the 2021-2023 KTM 390 Duke and replaces the stock silencer (muffler). The Furore-X uses an oval 304 stainless steel body made of 0.8 mm sheet, a perforated stainless steel inner barrel and tapered end caps. The kit comes with the link pipe for the 390 Duke.

Benefits

• Stainless steel. Both the body and the end caps have a brushed stainless steel finish.
• No modifications. The 390 Duke does not need any structural modification to take the kit.
• Model-specific fitment. GPR makes the Furore-X Inox specifically for the 2021-2023 390 Duke.
• Italian manufacturing. A 2-year manufacturer warranty from GPR comes with the GPR Furore-X Inox slip-on, made in Italy.

Technical Details

Exhaust

• Kit type: Slip-on, link pipe supplied
• Version: Race
• Silencer series: Furore-X Inox
• Removable DB killer: No
• Emissions classification: No EPA/CARB certification
• Weight: 2.5 kg (5.51 lbs)

Construction

• Silencer body: 304 stainless steel
• End caps: Tapered, satin-finish 304 stainless steel
• Silencer shape: Oval
• Dimensions: 90 mm x 130 mm (3.5 in x 5.1 in)
• Body color: Brushed stainless steel
• End cap color: Brushed stainless steel

Fitment

Installation

GPR supplies the kit without a DB killer and without a catalyst. A racing exhaust can require an ECU remap, particularly when the rider also installs a sports air filter or similar parts.

Package contents: silencer and the link pipe.

Common Questions

Does the GPR Furore-X Inox slip-on require an ECU remap?

GPR notes that racing exhausts sometimes need an ECU remap, particularly alongside a sports filter.

Which KTM 390 Duke model years fit the Furore-X Inox?

Every KTM 390 Duke built from 2021 through 2023 takes the Furore-X Inox, and the fitment table shows each model year.

What warranty covers the GPR Furore-X Inox slip-on?

The GPR Furore-X Inox slip-on carries a 2-year international warranty.

Why Choose Magma Powersports

• Authorized GPR dealer
• Built in Italy, covered by GPR's 2-year manufacturer warranty
• Free shipping worldwide
• Dedicated fitment for the KTM 390 Duke