Arrow Pro-Race Low Full Exhaust System in Titanium – BMW M1000RR K66 (2021-2026) 71205CP

The Arrow Pro-Race Low complete exhaust system transforms the BMW M1000RR K66 into a track-focused weapon without compromising on everyday workshop practicality. Weighing just 2.92 kg across the entire system, this full titanium assembly delivers measurable gains in throttle response and power output while stripping meaningful mass from the motorcycle — a combination that justifies its place in any serious track programme.

Key Features

• Full titanium construction throughout — header, slip-on silencer, end caps and internals — for outstanding heat resistance and a minimal system weight of 2.92 kg.
• Removable dB killer included as standard, allowing you to manage sound levels in the paddock or during noise-controlled sessions without tools.
• Purpose-engineered for the BMW M1000RR K66 (2021–2026) for a bolt-on, factory-precise fit with no fabrication or modification required.
• Outlet diameter of 68 mm and a canister length of 250 mm optimised for high-rpm flow characteristics on the M 1000 RR platform.
• Race-use only specification means every design decision prioritises power delivery and weight reduction over road-going compromise.

Build Quality and Materials

Arrow manufactures the 71205CP entirely from titanium — a material chosen not merely for its weight advantage but for its exceptional resistance to the sustained high exhaust temperatures generated by the M 1000 RR's S 1000 RR-derived engine under race conditions. The header runs in titanium, the silencer body is titanium, and even the end caps and internal components share the same specification. The result is a cohesive, thermally stable system that maintains its structural integrity session after session without the discolouration or warping associated with lesser materials.

Performance and Track Use

Developed specifically for circuit use, the Pro-Race Low system is calibrated to liberate the M 1000 RR K66's top-end performance rather than simply reducing back-pressure. Throttle response sharpens noticeably across the mid-range and upper rev band, and the 2.92 kg total system weight represents a significant reduction over the OEM assembly — weight saved low and central on the chassis where it improves handling balance most. Arrow recommends pairing this system with a bespoke ECU remap to extract the full performance benefit; this is standard advice for any full system replacement on a modern ride-by-wire superbike and is worth planning into your build budget from the outset.

Fitment and Compatibility

This system is designed exclusively for the following application:

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

Please note: the Arrow 71205CP is a race-use only exhaust system. It carries no road-use type approval and must not be used on public roads. The removable dB killer is provided for noise-controlled track environments and does not confer any road-legal status.

Specifications