Termignoni Full Exhaust System Black stainless steel / Carbon fibre Yamaha MT-07 (2021-2026) – Y13909400BCC⟲ 360° — drag me
3.4 k g
02 · Data & docs

The facts.

Technical data
BrandTermignoni
Part numberY13909400BCC
PipeworkBlack stainless steel
SilencerFull carbon fibre
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 in plain sight, and the colour of the pipework sets the tone of the whole machine. Y13909400BCC takes the dark route. Termignoni's complete racing system with black stainless steel collectors and a full carbon silencer.

Key Features

  • Racing system for the Yamaha MT-07, model years 2021 to 2026.
  • Black stainless steel collectors, silencer entirely in carbon fibre.
  • Termignoni figures: up to 2.8 hp more, 3.4 kg less.
  • Tested by Termignoni on the automatic-shift Y-AMT bike as well.
  • No remap; dB killer removable, lambda plug supplied.
  • Not road legal.

Keeping the bike dark

A bright exhaust on an MT-07 is a statement, and quite a few owners only realise after fitting one how much it shifts the look of the bike. The black version keeps the lower half of the bike in one tone: dark engine, dark frame, dark pipes, with the carbon silencer as the one textured detail at the back. On the grey and blue machine in Termignoni's photos, that is what keeps the wheels as the colour accent.

Is the extra money worth it

Mechanically the two Y139 versions are the same system with the same quoted gain and weight saving. In our shop this one costs noticeably more than the stainless and titanium version. Buy this one for the look, not for a number on a test bench.

Living with carbon on a naked bike

Without a fairing, the silencer is more exposed: a drop in a car park or a boot heel against the can will mark carbon where titanium would simply scuff. Reasonable care and a frame slider on the right go a long way.

Fitting and electronics

The system runs on the standard map. The lambda plug closes the sensor port, and Termignoni warn that Euro 5+ bikes may show an error message on the dashboard afterwards. The Y-AMT version with automatic shifting has been tested too. Deliveries begin in October 2026.

Fitment and Compatibility

Yamaha MT-07 from 2021 to 2026, Y-AMT included. The YZF-R7 version is listed separately.

Road Approval

Not road legal: Y13909400BCC has no EC approval and no ABE and is meant for the circuit.

Specifications

Specification Detail
Brand Termignoni
Part number Y13909400BCC
Type Full racing system
Collectors Black stainless steel
Silencer Full carbon fibre
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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