Moro Riders Unite!

[Midlake Crisis]

The Yamaha Moro 07 is an incredible machine but has some issues - I’m here hoping to connect with others who love the Moros and share positive info, solutions, upgrade/replacement part compatibility etc. Let’s Ride!

 

[Paulquattro]

Welcome to the site

 

[Midlake Crisis]

I had early trouble with the cassette lock ring and freehub, each had to be replaced, and I started shifting down a little when going uphill. It doesn’t seem to like full muscle power uphill on the two smallest cogs. since then bike has been running and shifting great without slips.

taking time out to dial in the suspension using the TrailHead app was easy and well worth it.

I am having a weird issue charging the battery. After charging the bike won’t come on and I get a display error. I remove the battery, push the test button and see it is fully charged. pop battery back in, and all works great. Anybody have ideas about why or how to correct?

 

[Stihldog]

I’m not familiar with your bike but there are several reasons for getting an error. You’ve probably searched for the potential issue.
Vibration, water ingress, component failure. An intermittent wiring connection disconnect could cause the error. It did for me. It became a mystery.

A main power disconnect was the problem caused by a slight vibration during a ride. Your situation is slightly different. Re-seat all electrical connections (motor, battery, computer etc). A failed computer would likely need a local Bike Shop to diagnose.

I don’t know if this helps …but consider this a bump for members who may have some experience with this. Good luck.

 

[ryry99]

Welcome to the site

Thankyou very mu

 

[ryry99]

Thankyou very much

 

[CarolinaCrawler]

My wife and I both had the regular Moro (the yellow ones) and put over 1200 miles on them before handing them down to out children. They were our first ebike and we really loved them.

We just had the usual problems. I struggled keeping the motor mounts tight until I just red locktited them. That solved it. Every time I had to adjust my wife's dropper I would have to drop the motor. Hers also would randomly shut off during a ride. Found out the battery was disconnecting from the mount so I shimmed the lower battery mount and that fixed it. Other than that they were problem free.

I put a zeb ultimate and fox float x on mine. Really made the bike ride better. I also had to install cushcore because I couldn't find a stiff casing 2.8 wide tire. We both kept the Magura brakes but upgraded to 4 piston rear calipers. Other than my wife going through 3 levers from wrecks we liked them.

Being our first ebikes, looking back we really have fond memories of them. They are what opened our eyes to the whole world of ebiking.

 

[JMath]

The Yamaha Moro 07 is an incredible machine but has some issues - I’m here hoping to connect with others who love the Moros and share positive info, solutions, upgrade/replacement part compatibility etc. Let’s Ride!

I think the Yamaha YDX Moro 07 is a decent bike, but I have definitely encountered issues.

I purchased mine in October 2024 (my first emtb) through the big online sale (when Yamaha was off-loading its existing inventory) at a price of ~$2,560 (pre-tax). It came with an extra battery and a 5 year warranty on the frame, battery and motor. On paper this appears to be a great deal. Shortly after purchase, Yamaha announced they were going to discontinue selling their emtbs in the USA, but said you could still get the bike serviced at any Yamaha dealership. This turned out to be false (very false).

Even though I purchased this bike new in late 2024, to the best of my knowledge this is the 2022 model and no changes to the bike were made after that model year. I think Yamaha realized they couldn’t compete with the rapidly evolving e-mtb market and innovation in the USA market and likely had been planning for a few years to just sell off their existing stock and make their exit.

Here are some positives about the bike. At the price I paid and at the spec level it came with, this appears to be a good deal, at least on paper (w/out taking into consideration customer service). The bike rides well on beginner to intermediate level terrain (green and low blue trails). It has a low bottom bracket height, which improves turning ability (however it is also a negative as it typically results in more pedal strikes and hits to the undercarriage).

I like that it has 27.5” wheels front and back, which to me adds to its turning ability and playfulness. The battery being removable was a big plus in my book and getting a free extra battery didn’t hurt either. The Yamaha electric motor (PWX3 on mine) is incredibly reliable and I have had no issues with approximately 5,400 miles to date and its still going strong.

Now, I will share some negatives. It’s not the quietest bike and requires some noise dampening to reduce the rattling, clicking and clacking, etc. Even after noise dampening efforts it still makes some noise, but is far better than no noise reduction effort.

It came with a worthless rear tire (Maxxis Rekon).

I don’t care for the Magura MT5 brakes at all, the lever assembly is made of plastic and prone to breaking, limited adjustment, difficult to service and not powerful enough for an e-bike that is this heavy. Additionally, the brake pads are held in by magnets and tend to make rattling noise in rough terrain.

Drivetrain - when in the smallest rear cog it is prone to slipping or completely binding up, when hammering on the pedals (e.g. charging towards a big jump line).

The battery level indicator is imprecise (e.g. only 4 bars, so 25% increments). So it only tells you the battery level is somewhere between 75% & 100%, or between 50% & 75%, etc. The battery is only 500wh so long rides are out of the question unless you swap the battery with a fresh one or recharge the one installed. For having only a 500wh battery the bike is relatively heavy. Many other brands are able to achieve a similar weight with an 800WH battery.

There is no adjustability of the motor’s performance characteristics, at least not that I am aware of. Maybe the bike can be taken to a Yamaha dealership and they can make adjustments. However, finding a dealership willing to do anything with these bikes can be challenging.

The eco mode of assistance is essentially worthless to me as I feel there is so much motor resistance that it feels like the motor is actively resisting you and I found it easier to pedal with the motor turned off. Based on my tests there does not appear to be much battery saving when using lower modes of assistance (same trail, same distance). For example, there was only a few % points saved when using the second level of assistance vs. the max assistance (level 5). The only meaningful difference is that it took noticeably longer and required much more effort when using lower levels of assistance (the battery savings was negligible).

The rear wheel is garbage and the hub disintegrated within three months of purchase. I think it is because there is only 12 points of contact in the freehub and it doesn’t have tight tolerances. Other reputable brands have over a hundred points of contact and tight tolerances. There is a little bit of play in the OEM freehub (due to the imprecise engineering/manufacturing) and with an electric motor and the forces involved the freehub was quickly destroyed as the contact surfaces smack against one another. It took Yamaha over 9 months to get me a replacement wheel under warranty (makes me wonder if they were making sure that I couldn’t file another warranty claim on the wheel as it only had a 1 year warranty, so by the time I received the replacement wheel the warranty was expired). After installing the replacement wheel from Yamaha, within a month or two the spokes begin breaking and this is with a tire insert installed. After the 3rd spoke broke, I said to heck with it and put on an aftermarket wheel that I purchased out of pocket (since it is difficult to replace the spokes, especially with a tire insert).

Just for a little context in regard to the length of time it took to receive the Yamaha replacement wheel, I also filed a warranty claim on the aftermarket wheel I had purchased from Quality Wheels (headquarters in Minnesota), as it developed a few cracks. However, instead of it taking 9 months to get a replacement wheel it only took a week and a half (great job Quality Wheels).

An additional negative is that Yamaha has added proprietary parts, which may limit what aftermarket components can be used on this bike. For example there are Yamaha specific sensors (related to the function of the electric motor) located on the axle of the rear wheel. So you can’t just buy any wheel from a different manufacturer and have it work. I found that there are very limited wheels/hubs that are actually compatible. Also the Yamaha rims that come with the bike are very wide (e.g. 40mm inner rim width vs. 30mm for most other bikes) and putting a narrower rim on like I did may change the sensor readings and instead of having a speed limiter of 20mph it may drop to 18mph. Just something to keep in mind.

In the marketing materials it claims 150mm rear wheel travel, however reputable bike testers and reviewers (e.g. Loam Wolf) have measured it at ~140 mm.

While spending several months in Bentonville, AR doing some riding on the fantastic trails there, I had a pedal strike at high speed while trying to get up enough speed to clear a lengthy table top jump. Immediately afterward, the right crank arm began contacting the frame (the lower rear triangle arm). I called every Yamaha Dealership within 200 miles to ask if they would look at the bike and assess the issue. The second I said electric mountain bike, every single one of them said “We don’t have anything to do with those bikes!”. Since I wasn’t planning on going back to Utah for several months, where I had picked up the bike from a Yamaha Dealership in Smithfield, UT, I decided to try a temporary solution and I purchased some shorter and stiffer cranks. Hoping that would eliminate and/or alleviate the issue of the crank arm contacting the frame. This did work, but when really hammering the pedals it would still graze the frame, so I put some gorilla tape on the frame where there was contact, to reduce any further damage until I could get back to the Yamaha dealership in Utah where I had picked up the bike and have them assess the issue.

Eventually, I did get the bike into the dealership where I had picked it up (after purchase) and was told, they would look at it, but they had never done any service on these e-mtbs (not a positive sign). They did their thing and then told me they couldn’t find an issue and it seemed as though the bike was working. I said, well I’m pretty sure the crank arm shouldn’t be contacting the frame. They’re like, well it seems to be working so I don’t know what to tell you. So essentially, all they did was spray a little silicone lubricant around the crank and said you’re all good to go!

Not satisfied with the Yamaha Dealerships assessment (Smithfield, UT location). I headed down to St George, UT and took the bike to Factory Power Sports (a Yamaha dealership). They actually had someone competent look at the bike and discovered there was a hairline crack in the frame and one of the electric motor mounts was broken, which is why the crank arm was contacting the frame.

So a warranty claim was filed in November of 2025. Months began to click by and no communication, so I called the dealership and they said they are waiting to hear from Yamaha Corporate on what to do. It’s now late into June 2026 and still no communication from Yamaha (I really do mean zero communication). If I call the dealership it’s always the same answer “We are waiting to hear from Yamaha Corporate”.

I understand people get busy and have priorities, but it only takes 10 seconds to send an email with an update. Even saying we haven’t been able to get to your warranty claim yet, but are hoping to do so with the next month would be better than nothing at all.

Despite all the issues with this Yamaha emtb and customer service issues, I don’t regret the experience as I have learned so much, from how to fix mountain bikes, to what I want and need from an e-mtb, as well as how important customer service is in the overall experience. Overall, in my opinion this bike is good for beginners and low intermediate’s who aren’t going to get rowdy and test the limits of this bike’s capability (think green and moderate blue trails). Just lower your expectations when and if you need any support from Yamaha. Would I buy another Yamaha e-mtb? No.

 

[JMath]

I had early trouble with the cassette lock ring and freehub, each had to be replaced, and I started shifting down a little when going uphill. It doesn’t seem to like full muscle power uphill on the two smallest cogs. since then bike has been running and shifting great without slips.

taking time out to dial in the suspension using the TrailHead app was easy and well worth it.

I am having a weird issue charging the battery. After charging the bike won’t come on and I get a display error. I remove the battery, push the test button and see it is fully charged. pop battery back in, and all works great. Anybody have ideas about why or how to correct?

Check the wiring harness located in between the very back of the rear triangle on the left side (disc brake side). The wiring harness connection to a sensor on the back wheel axle is prone to coming apart easily and can cause an error. I taped mine together cause it started throwing errors while out on the trail. This is something that Yamaha should have done in the manufacturing process.

 

[Stihldog]

Check the wiring harness located in between the very back of the rear triangle on the left side (disc brake side). The wiring harness connection to a sensor on the back wheel axle is prone to coming apart easily and can cause an error. I taped mine together cause it started throwing errors while out on the trail. This is something that Yamaha should have done in the manufacturing process.

I agree, the types of speed sensors can cause a world of hurt on almost any EMTB. Slight orientation issue, dirty magnet, poor wiring, failing sensor switch …blah blah .


Regarding warranty issues, (your patience is impressive btw), I would include this post in your next email communication with Yamaha corporate. And a link to this site. Copy and paste to any appropriate party’s. Their response may be interesting and helpful to others, and perhaps, beneficial to yourself.