Spark Exhaust Force Evo 400 mm WSSP Titanium Link Pipe Group Triumph Street Triple 765 (2019-2026) GTR8827ST
02 · Data & docs

The facts.

Technical data
Part numberGTR8827ST
TypeHalf system
Silencer designForce Evo
MaterialTitanium
Dimensions400 mm long
FitmentTriumph Street Triple 765 R / Street Triple 765 RS / STREET TRIPLE 765 S (2023-2026)
Road approvalNone — track use only
OriginMade in Italy
DescriptionThe whole story▼

The long case, on the current WSSP link pipe. Spark's 400 mm Force Evo behind a carbon-covered titanium pipe — the same price as the Konix Evo group, so the choice between them is about sound and proportion rather than money.

Key Features

  • Titanium link pipe with carbon cover and 400 mm Force Evo silencer.
  • Triumph Street Triple 765 and Daytona 765 Moto 2, 2019 to 2026.
  • Fits only Spark's GTR8815 or GTR8817 collector.
  • Force Evo: titanium case with a rib running into the carbon end cap.
  • The longest silencer group Spark offers on this collector.
  • Takes the G9999 dB killer.

Where a 400 mm Case Ends

Fifty millimetres over the 350 mm version is not much on paper and quite a lot on a naked bike. The Street Triple's tail is short, and a long silencer carried on the WSSP link pipe reaches noticeably further back than the compact one.

Whether that reads well depends on the motorcycle. On a Street Triple the longer case fills the space behind the seat unit and gives the rear of the bike a horizontal line it otherwise lacks. On the more heavily bodied Daytona the shorter case sits closer to the tail's own proportions. Neither is wrong; they are different silhouettes.

Length Instead of a Baffle

Spark's reason for offering longer Force Evo cases is stated across the range: to bring the sound level further down. A longer case gives the gas more distance through the packing and leaves the outlet open, which is not what a dB killer does.

For a rider who books circuits with published limits, that difference decides whether the exhaust arrives compliant or arrives needing a plug. The G9999 insert still fits this case if you need to go lower again, but the point of the longer silencer is not to need it.

What It Bolts To

Spark's part description sets the limit: GTR8815 or GTR8817 collector only. This is a group for a bike that already has a Spark front end, not a slip-on for standard headers.

If the Triumph is still standard in front, the equivalent complete kits are GTR0510T and GTR0511T with the same Force Evo silencers on a link pipe designed for the unmodified motorcycle.

The Carbon Cover

The link pipe under this group is titanium with a carbon fibre cover over it, and the cover is not decoration. Titanium radiates heat readily and the link pipe runs directly past the rider's boot and the underside of the seat unit; the carbon sits between the two.

It also survives being kicked. On a bike that is loaded into a van and pushed around a paddock, a carbon shield takes the knocks that would otherwise dent thin titanium.

Fitment & Compatibility

Triumph Street Triple 765 R, RS and S and the Daytona 765 Moto 2, 2019 through 2026, on the Spark GTR8815 or GTR8817 collector only. The Konix Evo version of this group is GTR8828ST; the 350 mm Force Evo for the Daytona is GTR8823ST. The dB killer is G9999.

Road Approval

None. No EC certificate and no catalytic converter. A lower noise reading is not an approval. Closed circuits only.

Specifications

  • Part number: GTR8827ST
  • Type: Link pipe and silencer group, WSSP replica
  • Link pipe: titanium with carbon fibre cover
  • Silencer: Force Evo, titanium with carbon end cap, 400 mm
  • Requires: Spark collector GTR8815 or GTR8817
  • dB killer: not included (G9999)
  • Fitment: Triumph Street Triple 765 / Daytona 765 Moto 2 (2019-2026)
  • Road approval: None — racing use only
  • Manufacturer: Spark Exhaust Technology, Mantova, Italy
FitmentWhich bikes this fits▼
  • Triumph Street Triple 765 R
  • Triumph Street Triple 765 RS
  • Triumph STREET TRIPLE 765 S
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08 · Paddock

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