The Yamaha MT-09 is a very popular middleweight sport bike from Yamaha. I previously wrote about it as part of my Tracer 900 review in passing — I wasn't impressed enough by the bike to write about it by itself.

In the past, the MT-09 suffered from two major things: Twitchy throttle response, and soft suspension.

In my personal opinion, the MT-09 also had slightly outdated electronics (not really a problem, just the lack of something I wanted). The display looked a bit old and the bike lacked an IMU, something that more and more motorcycles in the middlweight category feature (like BMW's latest F900R, and the 2021 Honda CBR600RR).

So has the MT-09 added the things that might tempt me away from my S1000R and onto a bike with more practical amounts of horsepower? Let's see...

Background — Problems with the previous MT-09

The MT-09 seemed like an awesome package. The "right" amount of power (100-120 hp is my personal sweet spot — enough so I can grab a handful of throttle on public roads, but never feel like it's wheezing), a naked chassis, and Yamaha reliability.

But when I test rode the old MT-09 — various years — I hated them. Here's why.

Twitchy throttle. Some people call this "responsive". It's true that you can get used to it. But for people who ride multiple bikes, the MT-09's throttle is jerky compared to most. When coming out of corners or leaving lights, I had to always be on guard, and couldn't relax. For context, I've ridden higher-power superbikes that had more predictable throttles.

Soft suspension. Many non-race bikes have soft suspension to comply with the vagaries of modern life. That's fine. But something about the short wheelbase and large amount of power made the suspension on the MT-09 felt toy-like. Yamaha can do (and has done) better on most of their mid-range motorcycles. Revzilla said the old MT-09's suspension made it "basically unrideable".

In general, the MT-09 felt overpowered. Its chassis couldn't keep up with the engine. The engine was always ready to spit out way too much for the chassis. You can slice it up anyway you like — the result was the same; it lacked "balance". And I wasn't the only one who felt that way. Not just reviewers, either; check message boards and reddit for phrases like "MT-09 jerky" or "mt-09 soft suspension" and prepare for the onslaught!

Apart from those things though, the promise of the the MT-09 was great!

When I recently bought a BMW S1000R, I did it by listing the things I'd regret not having, and an IMU that inputs into braking and traction control — often called "cornering ABS" — was one of them. So, the fact that the MT-09 and the Tracer 900 GT didn't have it were strikes against them, especially when I could get those on competitors (albeit slightly higher CC, and maybe competitors to the MT-10) like the Kawasaki Ninja 1000 and the Suzuki Katana.

But that appears to have changed in the 2021 Yamaha MT-09 — they've addressed those issues. Short of a test ride, I'm intrigued. (Yamaha Australia, send me one and I'll ride it around Oz for you!)

In addition, Yamaha have improved the engine and the display, plus made a small range of other changes.

So, on we go to the five major improvements in the 2021 Yamaha MT-09.

2021 Yamaha MT-09 and MT-09 SP improvements summary

In summary, the 2021 Yamaha MT-09 and MT-09 SP get

  • Improved suspension and handling: better suspension on the standard MT-09 (all KYB), and on the MT-09 SP, even better suspension (high-spec KYB forks and a fully adjustable Öhlins rear shock
  • Throttle improvements and Ride-by-wire: Ride by wire, and an attempt to reduce twitchiness, in support of the electronics package. The MT-09 SP (but not the base model) gets cruise control
  • Safety Features — a Six-Axis IMU: The 2021 Yamaha MT-09 and SP both get an IMU with cornering ABS and lean angle-sensitive ABS. Not even the MT-10 has this yet.
  • Engine improvements: More displacement to 889cc, and more power at 90 kW (120 hp). (Various sources say between 117-120; it may be regional.)
  • Updated digital TFT display. It looks nice!

Read below for more detail.

1. Suspension & Handling Improvements — Better Fully Adjustable Forks; Stiffer, lighter Frame

  • Front KYB forks get compression adjustment; MT-09 SP gets fully-adjustable, higher-spec inverted (still KYB) fork with DLC (for reduced friction)
  • Lighter weight — 4kg (8 lbs) lighter, to wet weight of 189 kg (417 lb)
  • Stiffer frame — 50% improved lateral rigidity
  • The MT-09 SP gets fully adjustable Öhlins rear shock (replacing KYB rear on the standard)
2021 Yamaha MT-09 suspension fully adjustable preload, rebound, compression
Adjustable front forks for rebound, compression, and preload

Yamaha addressed the tendency of the old MT-09 to dive by stiffening the frame and upgrading the forks.

The new lightweight 41mm KYB front forks are fully adjustable for preload, compression and rebound damping. (The front and rear are adjustable for preload and rebound, and the front is also adjustable for compression).

The out-going MT-09 had forks only adjustable for preload and rebound.

Yamaha promises to have reduced the tendency for the MT-09 to pitch with revised settings for the forks to complement the stiffer, lighter frame, optimising for a "smoother, more controlled rides".

The new MT-09 is also 4kg (8 lbs) lighter, with a wet weight of 189 kg (417 lb). That's super light! They get this weight with a lighter aluminium frame. Yamaha has also targeted rigidity, saying they've increased lateral rigidity by 50% (not sure what the metric is), adding to straight line stability.

2. Throttle Improvements — Ride by Wire

  • Ride by wire
  • Acceleration Position Sensor from the 2020 R1
2021 Yamaha MT-09 throttle and ride by wire
Throttle on the 2021 Yamaha MT-09

The twitchy throttle is one of those issues that has plagued every generation of the MT-09. Reviewers said that it made the outgoing MT-09 "too much to drive in the city" (Safer Turn) and "jerky". Commenters said "I decided the journalists were being pedantic... I then rode an MT09, and hated it. Obviously you can ride around it, but why should you have to - it detracts from the pleasure of riding." (reddit).

Jury is still out whether the 2021 MT-09 has fixed the throttle response. But it seems they're continuing to listen to feedback, and the throttle has been majorly overhauled on the 2021 MT-09. The 2021's throttle is now ride-by-wire, with an acceleration position sensor. Yamaha has added a spring, slider and gear to provide degrees of resistance to give a natural throttle feel during use.

The MT-09 SP gets one more gimmick attached to the ride-by-wire: cruise control. This puts it in the same category as the MT-10, another Yamaha standard motorcycle with cruise.

The whole ride-by-wire package comes from the 2020 Yamaha R1/R1M, but is calibrated for the MT-09. It has good pedigree at least.

Let's try one and see if it holds up the promise.

3. Safety Features — That Six-Axis IMU!

New for 2021:

  • Lean angle-sensitive traction control, braking, slide control, and front wheel lift control!
  • "Cornering ABS"

Since 2015, the only Yamaha motorcycle that had a six-axis IMU was the venerable R1. (Here are all the motorcycles with cornering ABS on the market.)

Look, the R1 is awesome. But it's not exactly a bike that most people can ride every day. So it's a shame that such a great safety feature was in a bike that most people just use for hard riding and on the track (admittedly probably where it'll come in most useful).

After years of just being on the R1, Yamaha has brought cornering ABS and their six-axis IMU to one of their mid-tier bikes, the MT-09! This is ahead of the higher-spec MT-10 and even Yamaha's premium-priced touring bike range.

The 2021 MT-09 has a new 6-axis inertial measurement unit (IMU) that keeps the performance of the R1's IMU in a smaller package.

The IMU gives input to

  • Traction control — which takes the difference in speed between the front and rear wheels, and takes input from the IMU to adjust intervention levels.
  • Slide control — adjusting power output on the rear wheel if it slides, but not cutting power if you're mid-corner,
  • Front wheel lift control — reducing power if it detects you doing a wheelie, but again, moderating this if you're mid-corner
  • Braking control — giving you "cornering ABS", meaning you can grab a handful of panic brakes mid-corner and your bike won't just stand up — you'll progressively come to a stop without going into the opposite lane.

Oh, and all these are adjustable and can be switched off. So you can do dank wheelies when you want!

That last one is important. The new MT-09 has two braking modes — BC1 and BC2. BC1 is regular ABS. And BC2 "controls the brake pressure in addition to ABS and operates in situations where machine behavior is likely to become unsettled, such as unavoidable panic braking mid-corner."

Cornering ABS on an MT-09. Awesome. (Now, I hope it makes it to the Tracer GT!)

4. Engine Improvements — More displacement, More power

2021 Yamaha MT-09 engine improvements

I thought the engine of the previous MT-09, with an 847cc engine and 86 kW (115 hp) of power was enough.

But Yamaha has increased the displacement to 889cc (sometimes reported as 890cc, even different regional Yamaha websites are different), and improved power output to 90 kW (120 hp).

So why increase the power on a middleweight sport bike with enough power? I've seen manufacturers do this at times in response to emissions regulations, where they're forced to increase engine size so they can maintain power while reducing emissions. For marketing reasons, they slightly increase power while they're at it, I think to distract from the emissions compliance. Since the 2021 MT-09 is compliant with EURO-5 emissions regulations, this may be the reason.

5. Digital Display Update

I thought the outgoing MT-09 LCD dash was fine. It gave all the info I needed, even if it was a bit small.

But the new 2021 MT-09 has a 3.5 inch full-colour TFT display with all the info. It looks "premium" and up-to-date, competing with the fancy displays from other manufacturers both in Europe and Japan.

Other improvements

  • Nissin front brake master cylinder
  • Adjustable riding position (handlebars and pegs)
  • LED lighting

The braking system has been improved in the 2021 MT-09. The front brakes are still 298mm discs, like the previous model, but the master cylinder is now a Nissin one.

Riding position is now adjustable on the 2021 MT-09. The handlebars and footpegs can be adjusted to two different positions. You can move the handlebar clamps 10mm forwards, and the footpeg mounts can be raised 14mm higher and 4mm backward.

The 2021 MT-09 has LED front headlight that also looks more aggressive. The parking lights (position lights) are also LED.

Lighting improvements Yamaha MT-09