Arrow Pro-Race 71903PRN slip-on silencer dark stainless steel on BMW S1000RR K67⟲ 360° — drag me
1.72 k g
02 · Data & docs

The facts.

Technical data
Part Number71903PRN
TypeSlip-on silencer
FitmentBMW S1000RR K67 (2019–2026)
Canister MaterialDark stainless steel
End Cap MaterialStainless steel
Internal MaterialStainless steel
Weight1.72 kg
Overall Length250 mm
Inlet Diameter60 mm
Outlet Diameter68 mm
DescriptionThe whole story▼

The Arrow Pro-Race 71903PRN is a road-legal slip-on silencer purpose-built for the BMW S1000RR K67 (2019–2026), offering a genuine upgrade in both weight savings and exhaust note without forcing a full system change. At just 1.72 kg, it trims meaningful mass from the tail end of your S1000RR while the dark stainless steel finish gives a purposeful, understated look that ages gracefully through daily and weekend use alike.

Key Features

  • E-number type approval — fully road legal and compliant for everyday street use straight out of the box.
  • Weighs only 1.72 kg, delivering a noticeable reduction over the stock unit and sharpening the bike's handling balance.
  • Dark stainless steel canister body with stainless steel end cap and internals — resistant to heat, corrosion and the rigours of year-round riding.
  • Removable dB killer included, letting you run quieter for commuting or remove it for a more characterful note on a closed circuit.
  • Plug-and-play fitment onto the OEM header — no cutting, welding or complex modification required for installation.
  • Compatible with Arrow headers to form a complete exhaust system should you choose to upgrade further down the line.

Build Quality and Performance

Arrow engineers the Pro-Race range at its Italian facility with aerospace-grade production tolerances. The full stainless steel construction — canister, end cap and internals — means there is no compromise between durability and weight. The dark finish on the outer canister is a heat-treated process, not a paint or coating that will flake or discolour after a season of riding. Connection dimensions of 60 mm inlet and 68 mm outlet are matched precisely to the S1000RR K67 exhaust port geometry, ensuring a leak-free seal and consistent back-pressure characteristics.

Road and Track Versatility

The fitted dB killer makes the 71903PRN an easy choice for riders who spend most of their time on public roads but still want the weight and aesthetic advantage of an aftermarket exhaust. When track days come around, the killer is removable in minutes, freeing up exhaust flow and sharpening throttle response across the rev range. For those seeking maximum performance gains, pairing this slip-on with an Arrow header and arranging a dedicated ECU remap is the recommended route to extract everything the S1000RR K67 platform can offer.

Fitment and Compatibility

This silencer is designed exclusively for the BMW S1000RR K67 across model years 2019 to 2026. It mounts directly to the standard OEM mid-pipe. It is also fully compatible with Arrow's own header pipes, allowing straightforward conversion to a full Arrow exhaust system at a later stage.

Specifications

  • Part number: 71903PRN
  • Type: Slip-on silencer
  • Fitment: BMW S1000RR K67 (2019–2026)
  • Canister material: Dark stainless steel
  • End cap material: Stainless steel
  • Internal material: Stainless steel
  • Weight: 1.72 kg
  • Overall length: 250 mm
  • Inlet diameter: 60 mm
  • Outlet diameter: 68 mm
  • Approval: E-number (road legal)
  • dB killer: Included, removable
FitmentWhich bikes this fits▼
  • BMW S1000RR (2019–2026)
07 · Support

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