GPR M3 Inox Slip-On Race Exhaust for the KTM 390 Duke 2017-2020

The GPR M3 Inox slip-on fits the 2017-2020 KTM 390 Duke and replaces the stock silencer (muffler). The RP-M3 Inox combines a round hand-brushed stainless steel body with a removable racing grill and CNC-machined end caps. GPR supplies the link pipe in the kit.

Benefits

• Hand-brushed stainless steel. GPR finishes the body and the end caps in brushed stainless steel.
• No modifications. Installation on the 390 Duke does not require any structural modification.
• Model-specific fitment. The M3 Inox is sized for the 2017-2020 390 Duke.
• Italian manufacturing. The GPR M3 Inox slip-on is Italian made and has a 2-year manufacturer warranty from GPR.

Technical Details

Exhaust

• Kit type: Slip-on, link pipe supplied
• Version: Race
• Silencer series: M3 Inox
• Removable DB killer: No
• Emissions classification: No EPA/CARB certification
• Weight: 1.5 kg (3.31 lbs)

Construction

• Silencer body: Hand-brushed stainless steel
• End caps: CNC-machined
• Silencer shape: Round
• Dimensions: 100 mm (3.9 in) diameter
• Overall length: 300 mm (11.8 in)
• Body color: Brushed stainless steel
• End cap color: Brushed stainless steel

Fitment

Installation

GPR does not supply a DB killer or a catalyst with the kit. GPR notes that racing exhausts may need an ECU remap, especially alongside other changes such as a sports air filter.

Package contents: silencer and the link pipe.

Common Questions

Does the GPR M3 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 M3 Inox?

GPR lists the M3 Inox for the KTM 390 Duke from 2017 through 2020. The fitment table shows each model year.

What warranty covers the GPR M3 Inox slip-on?

The GPR M3 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