Spark Exhaust Force Evo Silencer Group 400 mm D.60 Yamaha R1 (2015-2025) G00SI41T
02 · Data & docs

The facts.

Technical data
Part numberG00SI41T
TypeSilencer
Silencer designForce Evo
MaterialTitanium
DimensionsØ 60 mm, 400 mm long
FitmentYamaha R1 / R1M (2015-2025)
Road approvalNone — track use only
OriginMade in Italy
DescriptionThe whole story

Spark's current-generation compliance silencer, on its own. The Force Evo in titanium, 400 mm, sized for the D.60 STEP2 system — the case with the rib that converges into the carbon end cap, and the one the factory runs in the Endurance World Championship.

Key Features

  • Force Evo silencer group, titanium, 400 mm, for the Yamaha R1 and R1M.
  • For Spark's D.60 STEP2 manifold.
  • Within the 102 dB limit of the French championship and the Endurance World Championship.
  • Titanium case with a rib running into the lines of the carbon end cap.
  • The silencer fitted to Spark's EWC full titanium system.
  • Takes the G9999 dB killer as an option.

Force or Force Evo

Both clear the same limit, so this is not a choice about legality. The Force is Spark's long-running case: cylindrical, plain, with a straightforward mounting interface. The Force Evo is the newer design — a ribbed titanium sleeve closed by a carbon end cap, with the rib carried into the end cap's lines.

Around fifty euros separates them at this length. What that buys is the appearance of the silencer Spark puts on its endurance racing bikes rather than the one it has sold for years, on a bike where the silencer is the only part of the exhaust anyone sees.

What a Silencer Group Contains

Spark sells these as groups rather than as bare cases: the silencer together with the parts needed to hang it on the connecting pipe. That matters when you are replacing a damaged silencer rather than building a system, because the mounting hardware is what usually gets bent in the crash that killed the silencer.

A dB killer is not part of it. Spark's stated aim for this range is to meet the limits without one, and the Force Evo does at 102 dB. If you need to go lower, the G9999 insert fits the Force Evo and Konix Evo cases.

Fitment & Compatibility

Yamaha R1 and R1M, 2015 through 2025, on Spark's D.60 manifolds GYA8878 in stainless or GYA8858 in titanium. Complete as a kit it is GYA8859T, which additionally requires the SGATT844 bracket. The plain Force group with a dB killer for this diameter is G00SI38T.

Road Approval

None. No EC certificate, and the D.60 manifold it belongs to removes the catalytic converter. Closed circuits only.

Specifications

  • Part number: G00SI41T
  • Type: Silencer group for 3/4 system
  • Design: Force Evo
  • Material: Titanium with carbon end cap
  • Length: 400 mm
  • Manifold diameter: 60 mm (STEP2)
  • Noise: within the 102 dB French championship and EWC limit
  • dB killer: not included (G9999 optional)
  • Fitment: Yamaha R1 / R1M (2015-2025)
  • Road approval: None — track use only
  • Manufacturer: Spark Exhaust Technology, Mantova, Italy
FitmentWhich bikes this fits
  • Yamaha R1
  • Yamaha R1M
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08 · Paddock

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