Termignoni Full Exhaust System Stainless steel / Titanium Yamaha YZF-R7 (2021-2026) – Y13909400ITC⟲ 360° — drag me
3.4 k g
02 · Data & docs

The facts.

Technical data
BrandTermignoni
Part numberY13909400ITC
PipeworkStainless steel
SilencerTitanium, carbon fibre end cap
Power gainUp to +2.8 hp (manufacturer)
Weight saving3.4 kg (manufacturer)
ECU mapNot required
IncludedRemovable dB killer, lambda plug
FitmentYamaha YZF-R7 (2021-2026)
Road approvalRace use only — not road legal
DescriptionThe whole story▼

The YZF-R7 is a chassis that was always waiting for a better voice. Y13909400ITC is Termignoni's complete racing system for it: stainless steel headers and collector running into a titanium silencer finished with a carbon end cap, from the cylinder head all the way to the tail.

Key Features

  • Complete racing system for the YZF-R7, model years 2021 to 2026.
  • Stainless steel headers, titanium silencer, carbon fibre end cap.
  • Up to +2.8 hp and 3.4 kg lighter than standard, according to Termignoni.
  • No remap required to run it.
  • Removable dB killer and a lambda plug in the box.
  • Racing part — the motorcycle is not road legal with it fitted.

Three kilos off a 188-kilo sportbike

The R7 is light by supersport standards, and that is exactly why a weight figure like this one is felt rather than merely measured. The standard system carries its catalyst and silencer low and towards the rear; replacing all of it with stainless tube and a titanium can takes 3.4 kg away from where the bike notices it most, in direction changes and when it is picked up off a side stand on a cold morning in the paddock.

No new map, by design

Termignoni developed the Y139 to run on the standard engine calibration, which is unusual for a complete system and worth knowing before you budget for a dyno session you may not need. The maximum gain of 2.8 hp is the figure Termignoni quote for the system as delivered. A lambda plug is supplied so the oxygen sensor port can be closed once the original pipework is gone.

A message on the dash

On Euro 5+ bikes, Termignoni point out that fitting the system may bring up an error message on the dashboard, because the electronics notice that the original catalyst is no longer there. It is a warning from the bike's own diagnostics, not a fault in the exhaust, and it is the expected consequence of a racing system on a current-generation motorcycle.

Track days and the dB killer

The insert comes out, so the same system can meet a circuit noise limit with it fitted and run open where the organiser allows. On an R7 used for track days, that flexibility matters more than any number on a test bench. Termignoni start deliveries in October 2026.

Fitment and Compatibility

Yamaha YZF-R7, model years 2021 to 2026. The same reference is listed for the MT-07, which shares the CP2 engine; on our site that version has its own page.

Road Approval

Not road legal. Y13909400ITC is a racing system without EC type approval or ABE, for closed-circuit use only.

Specifications

Specification Detail
Brand Termignoni
Part number Y13909400ITC
Type Full racing system
Headers / collector Stainless steel
Silencer Titanium, carbon fibre end cap
Power gain Up to +2.8 hp (manufacturer)
Weight saving 3.4 kg (manufacturer)
ECU map Not required
Included Removable dB killer, lambda plug
Fitment Yamaha YZF-R7 (2021-2026)
Road approval Race use only — no ABE, no EC approval
FitmentWhich bikes this fits▼
  • Yamaha YZF-R7 (2021–2026)
07 · Support

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