Arrow Pro-Race Low stainless steel full exhaust system for BMW M1000RR K66, part 71204CP
3.62 k g
02 · Data & docs

The facts.

Technical data
BrandArrow
Part Number71204CP
System TypeFull exhaust system (Pro-Race Low)
FitmentBMW M1000RR K66 (2021–2026)
Header MaterialStainless steel
Silencer MaterialTitanium
End Caps / InternalsTitanium
System Weight3.62 kg
Silencer Length250 mm
Outlet Diameter68 mm
DescriptionThe whole story

The Arrow Pro-Race Low complete exhaust system 71204CP is one of the most practical full-system upgrades available for the BMW M1000RR K66. Weighing just 3.62 kg and engineered to deliver measurable gains in throttle response and power delivery, it is the kind of bolt-on investment that rewards both dedicated track-day riders and serious club racers who want more from every session without compromising reliability.

Key Features

  • Stainless steel headers for outstanding heat resistance, rigidity and long service life across repeated high-temperature track cycles.
  • Titanium silencer, end caps and internals for exceptional heat dissipation and an overall system weight of just 3.62 kg.
  • Removable dB-killer included — reduce noise levels for noise-sensitive venues, then pull it out for unrestricted performance when conditions allow.
  • 250 mm silencer length with a 68 mm outlet connection diameter, engineered for a precise factory-quality fitment.
  • Optimised exhaust gas flow developed specifically for the M1000RR K66 platform, improving throttle response and peak power under racing conditions.
  • Straightforward installation designed to integrate cleanly with the existing M1000RR K66 chassis and ancillaries.

Build Quality and Materials

Arrow has paired two complementary materials to give this system the best of both worlds. The headers are fabricated from high-grade stainless steel — a choice that prioritises durability and dimensional stability under the sustained thermal loads generated by the S1000RR-derived four-cylinder engine. The silencer, end caps and all internal components are manufactured in titanium, which keeps weight to a minimum while handling heat more effectively than steel equivalents. The result is a system that feels purposeful and premium without unnecessary mass.

Track-Day Practicality

Everyday track-day usability has been central to the design of the 71204CP. The included dB-killer fits securely and removes in seconds, meaning you can comply with circuit noise limits without carrying additional hardware. A custom ECU mapping is strongly recommended to unlock the full performance benefit of this system and achieve the sharpest possible throttle response across the rev range.

Important Notice

Race-use only — this complete exhaust system carries no road-use type approval. It is intended exclusively for closed-circuit competition and track-day use. Ensure compliance with your venue's noise regulations when the dB-killer is removed.

Fitment and Compatibility

The Arrow 71204CP Pro-Race Low exhaust system is designed and manufactured specifically for the following motorcycle:

  • BMW M1000RR K66 — model years 2021, 2022, 2023, 2024, 2025, 2026

Specifications

Attribute Detail
Brand Arrow
Part Number 71204CP
System Type Full exhaust system (Pro-Race Low)
Fitment BMW M1000RR K66 (2021–2026)
Header Material Stainless steel
Silencer Material Titanium
End Caps / Internals Titanium
System Weight 3.62 kg
Silencer Length 250 mm
Outlet Diameter 68 mm
Homologation Race-use only — no road approval
dB-Killer Included, removable
FitmentWhich bikes this fits
  • BMW M1000RR K66 (2021–2026)
07 · Support

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08 · Paddock

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