Spark Exhaust Grid-O Homologated Full System Titanium Triumph Trident 660 / Tiger Sport 660 / Daytona 660 (2021-2026) GTR8820TOM

The 2020 Moto2 world champion silencer, with a road certificate, on a 660 roadster. Spark's Grid-O version of the Trident system is the one that puts a genuine racing case on a motorcycle most people ride to work.

Key Features

• Homologated full system for the Triumph Trident 660, Tiger Sport 660 and Daytona 660.
• Grid-O silencer: full titanium, visible TIG welding, titanium grid.
• AISI 304 stainless collector and pre-silencer box.
• Racing catalytic converter with high noble-metal loading.
• Certificate from the Italian Ministry of Transport.
• The lightest silencer option in the homologated range.

Why This Silencer Is on This Bike

Spark is the Moto2 world champion exhaust manufacturer, and Triumph supplies the engine that championship runs. The Grid-O is the silencer that won the 2020 title. Putting it on the Trident — which uses the smaller version of the same three-cylinder architecture — is closing a circle rather than borrowing a name.

It is full titanium, its TIG welds are left unground, and the titanium grid at the outlet is the visual signature of Spark's racing catalogue. None of that is softened for the road version.

Approved, Not Restricted

The homologation belongs to the assembly. A racing catalytic converter heavily soaked with noble metals cleans the gas without behaving like a restriction, and the pre-silencer box ahead of the silencer takes the edge off the pressure pulse.

Because that work happens upstream, the Grid-O is left exactly as the racing department built it. That is why a Spark homologated system sounds like a Spark system — dark and enveloping, in Spark's own words — rather than like a muffled one.

Racing or Homologated

Spark builds this system in two forms and the difference is one component. The homologated version, this one, carries a racing catalytic converter in the pre-silencer box. The racing version GTR8820T replaces it with a 3-into-1 racing pipe.

The racing pipe is freer and around seventy euros cheaper, and it ends the road approval. Since the two are otherwise the same system with the same silencer, the choice is simply whether the motorcycle has to stay registered.

One Lambda Socket or Two

Spark changed this system during production. Kits delivered before the end of February have a single lambda sensor socket; those from the beginning of March carry a fitting for the second sensor as well. Current stock has the dual predisposition.

If you are buying a system that has been sitting somewhere, confirm which version it is first — Triumph's later machines run two sensors, and an unused socket left open is an air leak and an error light.

Fitment & Compatibility

Triumph Trident 660, Tiger Sport 660 and Daytona 660, 2021 through 2026. The racing version, with a 3-into-1 racing pipe instead of the catalyst, is GTR8820T. With the Moto GP silencer the system is GTR8818TOM; with the 60's, GTR8819IOM.

Road Approval

Homologated, with a certificate from the Italian Ministry of Transport.

Specifications

• Part number: GTR8820TOM
• Type: Full system, homologated
• Silencer: Grid-O, full titanium with titanium grid
• Collector and box: AISI 304 stainless steel
• Catalytic converter: racing, high noble-metal loading
• Fitment: Triumph Trident 660 / Tiger Sport 660 / Daytona 660 (2021-2026)
• Road approval: homologated
• Manufacturer: Spark Exhaust Technology, Mantova, Italy