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Wow, thanks!... I was in contact with Anna Lee from greenbikekit who said she could get me one. I waited a month, emailed her and she said it got lost and she'd order another, that was another month ago.

My ultra is no louder than the Yamaha PW motor on my Haibike, maybe even quieter

So if you've got a worn rotor gear you're basically screwed?

How many miles since you put it back together? Still quiet?

Nothing I ride gets that sloppy. If it looks like that, I'm not riding through it!

I hope I've made the right decision with the super moto X tires. My riding is mostly pavement but there's a 2 mi. stretch of dirt road I ride with hills that can stay wet long after a rain. The cheap kenda knobbies that came stock on the bike handle this with no problem whatsoever even as they...

I'd like to think I am easy on my Ultra so hoping for a long life. I had planned to open it up after just a couple hundred miles to re-lube but it's still quiet, maybe even quieter than when new. Maybe the grease guy was generous w/ mine but I'll have to take it apart this winter to check or...

I've read a fair amount of ultra motors needing replaced on this and other forums. Is there any sort of life expectancy for these motors? I've got a little over 1,000mi. on mine. Haven't opened it up yet as it's still very quiet

Wow, I like those numbers. Can't wait to install my moto X tires

Agreed, why my urban Rize RX came with knobbies is beyond me. I did ride it up and down the local ski hill trails. It's NOT a mountain bike

I realize there's a thousand variables but when I switch to road tires from knobbies, how much more range can I expect, if any. I can go 40mi. now on a full charge. Going from cheap Kenda knobbies to Schwalbe MotoX tires is the plan. I'm hoping for a mile or two more range since the tires should...

That's a shame because all those extra electrons weigh a lot and slowed you down

How much did the Moto X tires increase your range? I'm expecting maybe a mile or two from my normal 40mi. if that

I believe it's the straight PW motor, an early motor from them. Current versions are up to 85NM of torque

I'm losing my kenda knobbies for schwalbe moto x street tires. Not enough off road to justify knobbies although the noise doesn't bother me

They do but the difference is 12 mph all day long instead of 6mph into the wind. I need earplugs just for wind noise now

This bike with bafang ultra for 500 bucks more maybe and take my money

My 5 year old Haibike w/ Yamaha 60 NM of torque bike performs poorly in a strong wind, either that or I'm really weak. Enter my new Rize RX bike with bafang ultra motor and now headwinds don't exist as presented to the bike. It's a wonderful thing.

7075 alloy is good stuff, don't know if ali tempers it or even if it's really 7075 to begin with. Hopefully your long term testing will give us some answers. The sprocket I received may very well have worked o.k. but just by looking at it I decided not to use it. I'm sure these things are made...

Aluminum is too soft. I'm sure these Ali sprockets are some kind of alloy but nothing lasts and holds it's shape like real steel. The difference in teeth on the ali sprocket was visible to the naked eye. Honesty it probably would have worked o.k. but it wasn't quality that's for sure. Maybe they...