In this guide (6 sections)
When I pulled the Cyrusher XF900 out of the box, my wife took one look and said, “That’s disgusting” (3:58). That’s how this video got its name: the good, the bad and the ugly. After riding all three, though, I don’t think any of them is a bad bike. They’re built for different riders, and the right one depends on where you ride and how you get the bike there. You can watch the whole three bike comparison video or read my take below.
One thing first: this video is from July 2022, and only one of these bikes is still sold new. I’ll point you to what’s available now as I go.
The good: Aventon Sinch Step-Through
The Aventon Sinch Step-Through was $1,800 when I filmed, with the fenders and rear rack extra (0:22). That’s a steep price, but it does something the other two can’t. It folds, and it fit in the trunk of my Model 3 (0:42). It’s rare to find a full size e-bike that’s comfortable for me at about 6’1” and still fits in my car.
The rest of the package backed that up. It has a 500W rear hub motor with a ton of power, 4 inch street tires that handled solid dirt trails well, a key locked removable battery, and a throttle on the left that works from a stop as long as you’re in pedal assist 1 or higher. The dark green with gum sole tires looked sharp, too. My one complaint was that it had no headlight or tail light, which my Aventon Soltera has built in (1:20).
Today: Aventon no longer sells the Sinch Step-Through. Its current folding model, the Sinch 2.5, was listed at $1,799 and sold out on Oct 27, 2026. I haven’t ridden the Sinch 2.5. My link above now lands on Aventon’s home page. The full specs for the bike I tested are in my Sinch Step-Through review.
The ugly: Cyrusher XF900
I’ll admit it, this was the one I called ugly (3:46). I kind of like the blue, but the blue rims are a bit much. Get past the looks and the Cyrusher XF900 had the most hardware of the three: rear suspension plus a big, dirt bike style air fork you can inflate and deflate up top. It came with fenders, a rear rack, a tool kit, a headlight, a tail light on the rear fender and a horn.
The fork was impressive until I rode it. The 750W motor felt lackluster for a bike this heavy (5:33). Sitting behind that twist throttle, you feel like you’re on a dirt bike and expect dirt bike performance, and it doesn’t deliver. The kickstand also flexed from the moment it came out of the box, which is a problem on a bike this heavy.
If 90% of your riding is dirt or gravel, I’d pick this over the Sinch, because the dual suspension keeps you comfortable. If you mostly ride the road, it’s not the one for you.
Today: It was $2,400 in my video. As of Oct 27, 2026, Cyrusher sells the XF900 Pro for $1,199, down from $1,399, in grey, blue and green. I haven’t ridden the Pro version, so check whether its motor answers my complaint. More in my XF900 review.
The bad that wasn’t: Wallke F1
I called the Wallke F1 “the bad,” but it’s really not that bad (8:00). When I filmed, Amazon had it about $380 off, which put it near $1,000, about $800 less than the Sinch. I misstated the list price on camera. Wallke’s own page last listed it at $1,199.
Its 500W rear motor felt like way more power on this smaller bike. That was the surprise of the video: the same 500W rating as the Sinch, but on a lighter frame with 2 inch tires, it felt stronger than the 750W XF900. It still fit me, it had 3 gears up front and 7 or 8 in back, an adjustable headlight, and a sturdier kickstand than the XF900, which is hilarious to me. The catch is the parts. The tires, brakes, handlebars, screen and seat all felt cheap.
Today: The Wallke F1 is gone. Wallke’s product page now redirects to its general e-bike collection, and the Amazon listing is dead. If you wanted a cheaper bike with slimmer tires, look at the Jasion EB5 ST, $699 as of Oct 27, 2026. More in my Wallke F1 review.
What I learned riding all three
Watts alone don’t tell you how a bike will feel. The 500W Wallke felt stronger than the 750W XF900 because weight, big tires and suspension all eat into that power. And if you don’t own a bike rack, folding may be the only feature that matters. Only the Sinch fit in my trunk.
Quick specs
| Spec | Aventon Sinch ST | Cyrusher XF900 | Wallke F1 |
|---|---|---|---|
| Price in my video | $1,800 (fenders and rack extra) | $2,400 | About $1,000 on Amazon with $380 off; Wallke listed $1,199 |
| Price as of Oct 27, 2026 | Discontinued; Sinch 2.5 $1,799, sold out | XF900 Pro $1,199 (was $1,399) | Discontinued |
| Motor | 500W rear hub | 750W | 500W rear hub |
| Tires | 4 in fat, street tread | 4 in fat | 2 in |
| Suspension | not tested | Air front fork, rear suspension | not tested |
| Folds | Yes, fits a Model 3 trunk | No | No |
| Headlight | No | Yes, LED, plus horn | Yes, adjustable |
| Tail light | No | Yes, on rear fender | not tested |
| Brakes | not tested | Zoom | Zoom (cheaper) |
| Gears | Several (count not given) | Yes (count not given) | 3 front, 7 or 8 rear |
| Throttle | Left side, works from a stop in PAS 1+ | Twist | not tested |
Sources: my three bike comparison video; current prices from Aventon and Cyrusher, checked Oct 27, 2026.
Who should buy which
| If you… | Look at |
|---|---|
| Need to fit it in a small car trunk | A folder like the Sinch 2.5 (not tested by me) |
| Ride mostly dirt and gravel | Cyrusher XF900 Pro |
| Want the lowest price and slimmer tires | Jasion EB5 ST |
| Ride mostly on the road | Not the XF900 |
For more folding options, see my best folding e-bikes guide, or my original Aventon Sinch review.
“but test everything; hold fast what is good.” 1 Thessalonians 5:21 (ESV)
Check prices for the bikes in this guide
Prices change often, so these links go to the current listing. I only show a price where it's in my review data.
- Jasion EB5 Roamer ST · $699
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