Termignoni Full Exhaust System Stainless steel / Titanium Yamaha MT-07 (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 MT-07 (2021-2026), incl. Y-AMT
Road approvalRace use only — not road legal
DescriptionThe whole story▼

On a naked bike the exhaust is half of what you see. Y13909400ITC is Termignoni's complete racing system for the MT-07: polished stainless headers that run in full view along the engine, a stainless collector and a titanium silencer closed with a carbon end cap.

Key Features

  • Complete Termignoni racing system for the Yamaha MT-07, 2021 to 2026.
  • Stainless steel headers and collector, titanium silencer with carbon end cap.
  • Termignoni quote up to +2.8 hp and a saving of 3.4 kg.
  • Also tested on the MT-07 with automatic shifting (Y-AMT).
  • Works without a remap; removable dB killer and lambda plug included.
  • For closed-circuit use only.

Pipework you can see

There is no fairing on the MT-07 to hide anything. The header pipes curve down the right-hand side of the CP2 twin and are the first thing you notice on the bike after the tank. Bare stainless gives them a lighter, mechanical look that changes the colour balance of the whole motorcycle. On the grey and blue bikes in Termignoni's own photos, it lifts the lower half of the machine.

Tested with the automatic gearbox

Yamaha now sell the MT-07 with Y-AMT, the automated manual transmission without a clutch lever. Termignoni state that they tested the Y139 on the automatic-shift version as well, so owners of that bike are not left guessing whether the system suits their machine.

What it changes and what it does not

The 689 cc twin keeps its 270-degree crank and its uneven, off-beat note; the exhaust just stops covering it up. Termignoni measure up to 2.8 hp more at peak and 3.4 kg less on the scale, and the system is designed to run on the standard calibration, so no dyno session is required. Expect a warning on the dashboard of Euro 5+ bikes once the catalyst is gone; the supplied lambda plug closes the sensor port.

The dB killer

It can be removed. Leave it in for circuits with a noise limit and take it out where the event allows. Termignoni plan to deliver from October 2026.

Fitment and Compatibility

Yamaha MT-07, model years 2021 to 2026, including the Y-AMT version. The YZF-R7 version of this reference has its own page.

Road Approval

None. This is a racing system without EC type approval or ABE; with it fitted, the MT-07 is not road legal.

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 MT-07 (2021-2026), incl. Y-AMT
Road approval Race use only — no ABE, no EC approval
FitmentWhich bikes this fits▼
  • Yamaha MT-07 (2021–2026)
07 · Support

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08 · Paddock

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