Spark Exhaust EWC Titanium Racing Manifold D.65 Yamaha R1 (2015-2025) GYA8894R
4.1 k g
02 · Data & docs

The facts.

Technical data
Part numberGYA8894R
TypeHeader
MaterialTitanium
Spark weight4.1 kg
Standard weight10.8 kg
Weight saving6.7 kg
FitmentYamaha R1 / R1M (2015-2025)
Road approvalNone — track use only
OriginMade in Italy
DescriptionThe whole story▼

Spark's endurance-specification collector, sold on its own. The full titanium EWC system was among the company's 2023 news and is the configuration used in the Endurance World Championship; this is its collector, without the silencer.

Key Features

  • Titanium D.65 collector in the EWC specification, Yamaha R1 and R1M.
  • The configuration Spark runs in the Endurance World Championship.
  • Introduced as part of Spark's 2023 range.
  • Its own Force Evo silencer group: G00SI39T with cover, SGCM12400026T as the bare 400 mm case.
  • Replaces the standard headers and the catalytic converter.
  • Supplied without a silencer.
  • Spark states this version is not compatible with the passenger footrests.
  • Spark states this version is not compatible with the passenger footrests.

What Endurance Asks of an Exhaust

Spark makes reliability the centre of its argument for the full system, and points to the record: many teams chose the Spark system for the Endurance World Championship, and it took the 2017 world title in the Stock 1000 category. A twenty-four-hour race is a different test from a sprint — the same joints heat and cool through pit stops, rider changes and a night session, and a collector that merely survives twenty minutes is not qualified for it.

That is the case for buying an endurance-derived part for a bike that will never see Le Mans: whatever margin was engineered in for a twenty-four-hour race is margin you keep on a track day.

EWC or STEP2

Spark offers two titanium collectors on this bike at the same price, and the difference is the specification rather than the material. Both are D.65, both are titanium, both delete the catalytic converter, and both have their own 400 mm Force Evo silencer group — G00SI39T for the EWC, G00SI40T for the STEP2.

The decision you can actually make on paper is the pillion seat. Spark lists the STEP2 systems as compatible with the passenger footpegs and states that the EWC version is not. If someone rides on the back of your R1, take the GYA8880R. If the bike is a track bike with the pillion pegs already removed, the endurance configuration costs you nothing you were using.

Fitment & Compatibility

Yamaha R1 and R1M, 2015 through 2025. Complete with the 350 mm Force Evo silencer this collector becomes GYA8894T; the 400 mm silencer group for this specification is G00SI39T. The general-specification titanium collector is GYA8880R, the stainless one GYA8881R.

Road Approval

None. The catalytic converter is removed and no EC certificate exists for this part. Closed circuits only.

Specifications

  • Part number: GYA8894R
  • Type: Racing collector, full system, EWC specification
  • Diameter: 65 mm
  • Material: Titanium
  • Matching silencer: Force Evo — 350 mm in the complete system, 400 mm available separately
  • Catalytic converter: removed
  • Silencer: not included
  • Passenger footrests: not compatible (Spark)
  • Passenger footrests: not compatible (Spark)
  • Weight: Spark publishes a figure for the complete system only — not stated here for the collector alone
  • 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
07 · Support

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