Spark Exhaust Grid-O Titanium Full Exhaust System BMW M1000RR K66 (2021-2026) GBM8823

The Spark Exhaust Grid-O Titanium full exhaust system for the BMW M1000RR K66 strips 6.8 kg from your motorcycle's original exhaust weight — dropping from 10.5 kg down to just 3.7 kg — delivering genuinely measurable gains in chassis dynamics and throttle response from the moment you bolt it on. This is the same Grid-O silencer proven on Moto2 and Superbike World Championship circuits, now available as a complete bolt-on solution for road and track use on your M1000RR.

Key Features

• Full titanium construction throughout — header, silencer body and end cap — combining extreme heat resistance with a significant weight reduction of 6.8 kg over the standard system.
• Race-proven Grid-O silencer design, directly derived from units run in Moto2 and WorldSBK competition without decibel restrictions.
• Removable DB killer (part number G9980) included, giving you the flexibility to run a compliant setup or open it up for full track noise of approximately 114 dB at 5,500 rpm.
• Compatible with original BMW fairings and both standard and kit radiators, so installation does not require additional bodywork modifications.
• Supplied with a bracket for the original pillion footrests and a complete fitting kit including all exhaust springs — everything needed for a straightforward installation.
• Handcrafted in Italy, reflecting Spark's exacting quality standards and the same production process used for their top-level race programmes.

Build Quality and Real-World Usability

Choosing a full system over a slip-on delivers the greatest possible return on investment for track-focused riders. Where a slip-on replaces only the silencer, the Grid-O full system replaces the entire exhaust path with titanium pipework, so the weight reduction and flow improvements are felt across the entire rev range. The titanium header and canister resist discolouration and corrosion far better than stainless alternatives, keeping the system looking purposeful even after sustained high-temperature use.

The removable DB killer is a practical feature that distinguishes this system for riders who use their M1000RR on both road and track. Install the G9980 insert for a more manageable sound level on public roads or at circuits with noise limits, then remove it for maximum flow and the characteristic 114 dB bark when conditions allow. An optional chassis bracket is also available separately, allowing the system to be further tailored to specific race or trackday configurations.

Performance and Track Use

The Grid-O's racing heritage means it was designed specifically for circuits without decibel restrictions, and the performance gains are concentrated where they matter most on track. The 6.8 kg mass reduction lowers the centre of gravity and reduces unsprung rotational mass at the rear, with a direct and perceptible effect on corner-entry stability and direction changes. To extract the full potential of the system, Spark recommends a dedicated race map or a bespoke dyno session — pairing the Grid-O with an optimised fuel map will unlock the complete throttle response improvement the system is capable of delivering.

Fitment and Compatibility

This system is designed and manufactured specifically for the following motorcycle:

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

Compatible with original BMW fairings and both OEM and aftermarket kit radiators. Includes a pillion footrest bracket for integration with the standard subframe arrangement.

Specifications