Spark Exhaust Grid-O Titanium 3/4 Racing Kit Triumph Street Triple (2017-2026) GTR0501T

One point seven kilos, in place of six point six. Spark's racing half system for the Street Triple is a titanium link pipe with its TIG welds left on show, closed by the Grid-O — and Spark marks it plainly: not recommended for road use, racing only.

Key Features

• Racing 3/4 kit for the Triumph Street Triple, 2017 to 2026.
• 1.7 kg against 6.6 kg standard — 4.9 kg saved.
• Titanium link pipe with visible TIG welding.
• Grid-O silencer: the 2020 Moto2 world champion case, full titanium.
• Fits the standard collector with its catalyst, or Spark's GTR8502 racing manifold.
• Marked by Spark as racing use only.

Nearly Five Kilos

Four point nine kilos off a Street Triple is a large number in relation to what the motorcycle weighs, and it comes from the middle of the machine — the section behind the collector, under the seat, close to the roll axis.

That is the region where mass is least noticeable at a standstill and most noticeable in a fast change of direction. A naked bike with a short wheelbase already changes direction well; taking five kilos out of the part of it that swings is the kind of change a rider notices in the first corner rather than on the spec sheet.

Welds Left Visible

Spark describes the racing link pipe as having visible TIG welding for a style that is racing and elegant at once, and it is worth taking at face value. A ground and polished weld looks tidier and tells you nothing; an unground bead is a weld you can inspect.

On a titanium pipe the bead also carries the heat-tint colours of the weld, which is why race exhausts look the way they do. Spark leaves them because the alternative is grinding away the evidence that the part was made by hand.

Two Ways to Fit It

Spark built this range to be modular, and this kit reflects that. It mounts on the original Triumph collector with its catalytic converter in place, or on Spark's GTR8502 racing manifold.

The first route is the cheaper one and keeps the catalyst in the system. The second removes it and gives the engine the collector dimensions Spark developed from its Moto2 work. Either way the silencer and link pipe are the same part. On MY24-26 machines the SKIT112 mounting kit is required.

Fitment & Compatibility

Triumph Street Triple, 2017 through 2026 — the 660 S and the 765 R, RS and S. The link pipe on its own is GTR0501R. The homologated alternatives with a catalysed box are GTR0507TOM and GTR0503TOM. Spark's racing manifold is GTR8502; the mounting kit for MY24-26 is SKIT112.

Road Approval

None. Spark marks this kit as not recommended for road use and for racing use only. It carries no EC certificate.

Specifications

• Part number: GTR0501T
• Type: 3/4 racing kit
• Link pipe: titanium, visible TIG welding
• Silencer: Grid-O, full titanium
• Spark weight: 1.7 kg
• Standard weight: 6.6 kg
• Weight saving: 4.9 kg
• Mounts on: standard collector or Spark GTR8502
• Required on MY24-26: SKIT112 mounting kit
• Fitment: Triumph Street Triple (2017-2026)
• Road approval: None — racing use only
• Manufacturer: Spark Exhaust Technology, Mantova, Italy