2021 Yamaha MT-09 First Look

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By Ryan Adams

Details for the 2021 Yamaha MT-09 have just been released. Notable takeaways for the 2021 model year are an all-new larger capacity engine at 890cc, updated chassis to match, and advanced electronics. While those are certainly the major changes for this new iteration of MT-09, styling has also been tweaked slightly throughout, with the cyclops-esque headlight undoubtedly being the most polarizing change.

As we previously reported in September, the MT-09 has received a displacement boost from 847cc to 890cc. This was achieved by increasing the stroke to 62.1mm from 59.1. The Triple’s bore remains the same at 78mm. Keeping in line with trends recently, the additional displacement will help Yamaha pass ever-tightening emissions standards while also providing a four horsepower boost, bringing it to 118 hp, according to emissions test data.

For 2021, the MT-09 gets a displacement boost of 43cc, from 847cc to 890cc.

The larger displacement isn’t the entire story with the new engine though. Yamaha claims, “virtually every major component is new, including the pistons, connecting rods, camshafts and crankcases.” The new 890cc engine also uses a completely new fuel delivery system. For 2021, the fuel injectors are mounted to the throttle valve side – versus attached directly to the cylinder head – for better fuel atomization that also reduces the fuel adhesion to the intake port walls, delivering an 11% increase in fuel efficiency. The MT-09 also receives the Yamaha Chip Controlled Throttle (YCC-T) featuring a new Accelerator Position Sensor Grip (APSG) said to give excellent feel and reliability.

The intake system gets other changes as well: “As the engine speed increases, the intake sound becomes more dominant and heightens the feeling of acceleration felt by the rider. This is accomplished via a new intake system with an air cleaner box featuring an all-new three duct layout, with …read more

Source:: 2021 Yamaha MT-09 First Look


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