YAMAHA MT-09 (2021 - 2022)STR-1 muffler, with full 3-1 exhaust system Stainless Steel Aisi 304 - Euro 5

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Part Number: Y37A-C135MB


Line Full exhaust system 3-1
Headers Material Stainless Steel AISI 304
Body Material Stainless Steel Aisi 304
End Cap Material Stainless Steel Aisi 304
Frame attachment Bracket
Lambda probe Yes
Homologation – EC, TUV approved Yes - street legal - EURO 5
Approval Certificate Yes
World Leading Homologation Approved Development EURO 5
Certified EU Approved (Euro 5) Stringent Noise and Emissions Compliance Yes
Compliant to Australia Noise Regulations Yes
Weight   -0.5Kg (SC 6.5 Kg / STOCK 7 Kg)
Power   +3.1 hp @ 9750 rpm
Torque   +2.5 Nm @ 9750 rpm


** Pre-Order Now Delivery Scheduled for late August 2022 **



The usual turnaround time to our Perth (WA) warehouse is: 3-7 weeks. SC-Project Oceania retain an incredibly extensive inventory of items in our large Perth warehouse, however it is not always possible to retain all options for every bike and year model in stock at all times. It is for this reason that backorders are required from time to time. Order today knowing your patience will be rewarded with the exceptional excellence of SC-Project. The trusted choice to the Real World Champions. Ride with the Best! Afterpay and PayPal Pay In 4 now available.


The new STR-1 exhaust is the last creation of SC-Project R&D Department and represents a full step forward in terms of tuning process of the new Yamaha MT-09.

To combine perfectly the aesthetic of the bikes originally designed and produced with low-position exhaust – sometimes totally positioned under the engine – it has been necessary to project and develop a new solution: the answer is the new and innovative STR-1 exhaust.

Great attention has been dedicated to performance optimization and sound output, which is a real “must” for the 3-cylinders Yamaha engines and for all SC-Project products.

The full-system for the MT-09 has been manufactured with high-quality stainless steel AISI 304 and with top level quality finishes that this bike deserves. All couplings are guaranteed by male / female bushings that ensure a perfect seal, with special T.I.G weldings handcrafted in protected environment. The option “black color” is made with a special ceramic paint process to resist to high temperatures. The specific carbon fiber cover is manufactured with autoclave process to offer a unique style and harmonic design.

The STR-1 full system for Yamaha MT-09 allows to save 0,5 kilograms and to gain an outstanding maximum increase of 3.1 hp and 2.5 Nm of torque at 9.700rpm (if compared to the original system), with a sensible improvement of throttle response and riding experience throughout the engine delivery range, in the total respect of Euro5 regulations.

The installation is plug&play and ECU remapping is not required.
For racing use only, it is possible to remove the catalytic converter.
The removal of the catalytic converter does not meet the Euro 5 regulations.

  • Slip-On muffler
  • Full AISI 304 stainless steel 3-1 Exhaust System
  • Carbon fiber heat protection
  • Springs and screws
  • SC-Project stickers
  • 24 months SC-Project official warranty
  • Homologation card
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