Spark Exhaust Grid-O Titanium Slip-On Silencer BMW M1000RR K66 (2021-2026) GBM0702

A genuine 1.4 kg weight saving straight out of the box — the Spark Exhaust Grid-O Titanium slip-on silencer for the BMW M1000RR K66 (2021-2026) is the single most impactful bolt-on upgrade you can make to your M1000RR without touching the engine. The same Grid-O canister already races in Moto2 and the Superbike World Championship, and now it fits your road or track bike with zero compromise to daily usability.

Key Features

• Verified 1.4 kg mass reduction (stock unit: 2.1 kg, Grid-O: 0.7 kg) — sharpens chassis balance and throttle response immediately.
• Full titanium canister and end cap: exceptional heat resistance, corrosion resistance and long-term durability with a purposeful racing aesthetic.
• Removable dB killer allows you to run the system quietly on the road, then pull it for track days where no noise limit applies — measured at 110 dB at 5,500 rpm without the dB killer fitted.
• Compatible with the standard fairing, radiator and passenger footpegs, so no bodywork modifications are required for fitment.
• Proven Moto2 and SBK World Championship race lineage — Grid-O is not a cosmetic upgrade, it is a competition-developed component.
• Made in Italy: every unit is hand-assembled using Italian craftsmanship to Spark's exacting production standards.
• Complete fitting kit included: all exhaust springs and mounting hardware ship in the box, so installation is straightforward from day one.

Performance and Sound

The Grid-O canister is engineered to liberate the M1000RR's inline-four and let it breathe without the restriction of the heavy stock silencer. The titanium construction handles the extreme temperatures generated by the S1000RR-derived race engine without distortion or discolouration over time. On track without the dB killer, the system delivers a sharp, high-frequency exhaust note consistent with its Superbike racing origins. For road riding, simply refit the removable dB killer and the character changes to something far more civil — no tools required beyond what Spark supplies in the mounting kit.

To extract the full performance potential, Spark recommends pairing this slip-on with a dedicated race ECU map or a custom dyno tune. The free-flowing canister will shift the fuelling and power delivery noticeably, and a proper tune ensures the engine management reflects the improved exhaust flow.

Build Quality and Materials

Spark chose titanium for both the canister body and the end cap because it combines the lowest practical weight with the structural integrity and thermal stability demanded at World Championship level. Unlike aluminium, titanium retains its form and finish under sustained high-heat cycling, which matters whether you are completing a 20-lap race session or a long motorway run. The Grid-O name refers to the distinctive external grid pattern on the canister — a visual signature that identifies it immediately on track and in the paddock, and one that reinforces the can's rigidity without adding meaningful weight.

Fitment and Compatibility

This listing is specifically for the BMW M1000RR K66, covering model years 2021 through 2026. The system connects to the existing header and mid-pipe using the original mounting points, and Spark confirms full compatibility with:

• Standard BMW M1000RR K66 bodywork (2021-2026)
• OEM radiator and cooling system
• Factory pillion footpeg hangers

No fairing cuts or bracket fabrication are needed. If you are running aftermarket bodywork or a different model year, please confirm fitment before ordering.

Specifications