Arrow Indy-Race titanium slip-on silencer 71957PK for KTM RC 390 2022-2025 with carbon end-cap⟲ 360° — drag me
1.99 k g
02 · Data & docs

The facts.

Technical data
BrandArrow
Part Number71957PK
TypeSlip-On Silencer
FitmentKTM RC 390 (2022-2025)
Weight1.99 kg
Canister MaterialTitanium
End-Cap MaterialCarbon
Internal ComponentsStainless steel
Canister Length250 mm
Inlet Diameter45 mm
DescriptionThe whole story▼

Engineered specifically for the KTM RC 390 across model years 2022 to 2025, the Arrow Indy-Race titanium slip-on silencer (part number 71957PK) delivers a genuine step up in throttle response and mid-range pull without compromising the all-day rideability that makes the RC 390 such a rewarding machine. At just 1.99 kg, it sheds meaningful mass over the stock unit and arrives road-legal straight from the box thanks to its E-number homologation.

Key Features

  • Titanium canister construction keeps total weight to 1.99 kg, reducing unsprung and overall mass for sharper handling feel on both road and track.
  • E-number homologation means the silencer is fully street-legal and ready to fit and ride without any additional paperwork.
  • Included DB-killer insert allows straightforward sound-level adjustment — remove it on track days, refit it for the commute home.
  • Carbon end-cap gives the silencer a premium, race-derived appearance that suits the RC 390's aggressive bodywork.
  • Stainless steel internal components resist the intense heat cycles of hard riding and ensure long-term durability.
  • Compatible with the Arrow header and Arrow mid-pipe to form a complete Arrow exhaust system for maximum power gains.

Build Quality and Materials

Arrow has built the 71957PK around an aerospace-grade titanium outer body, the same material philosophy used on their MotoGP and World Superbike programmes. Titanium offers an exceptional strength-to-weight ratio alongside outstanding resistance to heat and corrosion, so the canister holds its finish season after season. The internal baffling and packing are housed in stainless steel components, chosen for their ability to withstand sustained high temperatures without distorting or corroding. The carbon fibre end-cap completes the package with a lightweight, race-influenced finish that ages gracefully even under heavy use.

Performance and Throttle Response

The Indy-Race silencer geometry is tuned to reduce back-pressure at the RPM range the RC 390 uses most — the result is noticeably crisper throttle pick-up and a broader, more usable power delivery across the rev range. On a standard slip-on fitting you will feel the improvement immediately; pair it with the Arrow header and Arrow mid-pipe and the gains scale up considerably. Arrow recommends a dedicated ECU map to extract the full potential of the system and to ensure fuelling remains optimal throughout the rev range.

Fitment and Compatibility

The Arrow 71957PK is a direct bolt-on replacement for the standard silencer on the following motorcycle:

  • KTM RC 390 — model years 2022, 2023, 2024 and 2025

The silencer connects via a 45 mm inlet diameter and exits through a 36 mm outlet. Overall canister length is 250 mm. It mates directly to the original KTM mid-pipe or can be combined with the Arrow mid-pipe and Arrow header for a full Arrow exhaust system.

Specifications

Brand Arrow
Part Number 71957PK
Type Slip-On Silencer
Fitment KTM RC 390 (2022-2025)
Weight 1.99 kg
Canister Material Titanium
End-Cap Material Carbon
Internal Components Stainless steel
Canister Length 250 mm
Inlet Diameter 45 mm
Outlet Diameter 36 mm
Homologation E-number (road legal)
DB-Killer Included
FitmentWhich bikes this fits▼
  • KTM RC 390 (2022–2025)
07 · Support

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