Mokwheel Obsidian ST Review: Long Range Off-Road Muscle for $2,000
A low step-through fat-tire off-roader with 105 Nm of torque, a throttle, and a real shot at long mixed-terrain days for $1,999.99.
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What the stars are rated against
The stars compare this bike with other off-road e-bikes we have scored — 35 of them, priced $1,400–$2,600. They are a ranking inside that group, not an absolute grade: four stars means it beats most of that set on the measure, not that it hits some fixed standard.
Peers are drawn from a tight price band around this bike, so a $1,000 commuter is judged against other $1,000 commuters rather than against machines costing three times as much. Change the group and the stars would change with it.
The headline Genius Score is not decided by that group alone. It blends the category ranking above with a market-wide view across every bike we publish, so a bike cannot climb simply by sitting in a weak category. How we score.
If your riding is a mix of gravel roads, dirt paths, and the paved stretch back home, the Mokwheel Obsidian ST is built to take all of it in stride. The puts out a steady 750 watts, and gives it real pulling power for loose ground and climbs. It's a bike with a thumb , so you can cruise up to 20 mph without pedaling at all, and pedal assist keeps helping until 28 mph.
The large and easy-to-mount step-through frame round out a genuinely capable all-terrain bike for $1,999.99, and that combination earns a Genius Score of 80 out of 100.
Pros & cons
What we like
- A 750W motor and give it real climbing muscle for loose gravel, sand, and steep pitches.
- The big backs up an claim, so range is one of its clear strengths.
- A thumb lets you ride to 20 mph without pedaling, handy for pulling away from a stop or easing up a hill.
- The low step-through frame is easy to mount, and the 26x4-inch puncture-resistant fat tires grip loose ground and roll over obstacles.
- Tektro give confident stopping power for a heavy, capable bike.
Worth weighing
- Mokwheel doesn't list a fork, which many rivals at this price include, so the fat tires are the only thing softening bumps and roots.
Key specs
The motor & power
The Obsidian ST runs a 750W . Its steady power delivery is a plus on loose or steep ground, where you get consistent pull instead of a wheel-spinning surge.
What really matters off-road is the . That's a strong number, enough to keep you moving up a loaded climb or through soft sand without bogging down, even when the throttle is doing most of the work.
Mokwheel lists three power figures for the Obsidian ST: 750W , 1,000W continuous, and 1,300W . The 750 is what it holds all day, so that's the number to judge its everyday grunt by, not the peak.
Range & battery
Range is one of this bike's real strong suits. The is on the larger side for the price, which is what lets Mokwheel on a charge.
That 80-mile figure comes from easy, flat, pedal-forward riding. Out on real mixed terrain, with fat tires, climbs, and time spent on the , you'll see meaningfully fewer miles, and the exact number comes down to your terrain and how much you let the motor carry you.
Ride & components
The step-through frame is the easy-living part of this bike. You don't have to swing a leg up and over a high top tube, which helps when you're hopping on and off a lot, wearing bulky gear, or loading it up.
The 26x4-inch puncture-resistant fat tires are the main comfort feature, adding grip, floating over sand and gravel, and taking the edge off bumps. Since Mokwheel lists no fork, those tires are what smooth out the ride, so genuinely rough, technical trails will come through to your hands and body.
Stopping comes from Tektro TKD171 , which deliver the bite you want on a bike this heavy, and a Shimano 8-speed drivetrain covers the gear range for most trail and road riding. It weighs 77 pounds, normal for a fat-tire bike carrying a battery this large.
One quirk worth knowing: the throttle tops out at 20 mph, so reaching the full 28 mph means pedaling with the assist on. That's simply how a Class 3 throttle bike works, not a shortcoming of this one.
Mokwheel rates the Obsidian ST to carry up to 560 pounds. That's a very high for a bike this size, so if you plan to load it near that limit with a passenger, cargo, or a trailer, it's worth confirming the details with Mokwheel first.
Price & value
At $1,999.99, the Obsidian ST hands you a lot of hardware for the money. The large battery, the high-torque motor, and the hydraulic brakes are the sort of parts that usually push the price higher, which is why it comes across as a strong value for what it can actually do.
You're paying mid-range money and getting genuine all-terrain capability, not a stripped-down bike leaning on one headline spec. Where it saves is on the extras, like a fancier drivetrain, so the value comes down to whether the fat tires and 8-speed gearing fit your kind of riding.
Who it's for
The dirt-and-pavement wanderer
If your rides mix gravel, dirt trails, and a paved stretch to get there, this bike handles the whole loop. The torque and fat tires deal with loose ground, and the big battery means you're not planning your day around the next charger.
The rider who's done climbing over frames
If swinging a leg over a tall top tube is a pain, whether from a cranky knee, shorter legs, or an armful of gear, the low step-through makes getting on and off simple. The also lets you start from a dead stop without a hard first pedal push.
The technical singletrack rider
If you ride rocky, rooty, drop-heavy trails, note that no suspension fork is listed for the Obsidian ST. The 4-inch tires take some sting out, but a trail bike with a real fork will treat your hands and wrists better on the gnarly stuff.
The pavement-only commuter
If your riding never actually leaves the pavement, the fat tires and off-road build are effort you won't cash in on. A lighter street e-bike would feel quicker off the line and cost less to own, so this makes the most sense once there's real dirt in your week.
Frequently asked
How far does the Mokwheel Obsidian ST go on a charge?
Mokwheel from the 940Wh battery, but that's a best-case number. On mixed terrain with the throttle and fat tires, expect fewer miles depending on how much you climb and how hard you push.
Does the Mokwheel Obsidian ST have a throttle?
Yes. It has a thumb that will move the bike up to 20 mph with no pedaling at all.
Can you ride the Mokwheel Obsidian ST without pedaling?
You can. On the throttle it'll go up to 20 mph on motor power alone. To reach its 28 mph top speed, you'll need to pedal with the assist on.
How fast does the Mokwheel Obsidian ST go?
Pedal assist helps up to 28 mph, and the throttle alone gets you to 20 mph. That top assisted speed makes it a e-bike.
How much does the Mokwheel Obsidian ST weigh?
It weighs 77 pounds, which is normal for a fat-tire off-road e-bike carrying a battery this large.
What size battery does the Mokwheel Obsidian ST have?
It uses a 48V 19.6Ah pack, about 940 .
How it compares to its siblings
The Obsidian ST is spec-for-spec the same bike as the Obsidian - same 105Nm torque, 940.8Wh battery, 80-mile range, 77 lb weight, TEKTRO hydraulic brakes, 26" x 4.0" tires, and $1999.99 price. There's no measurable reason to choose one over the other. The 2.0 versions add a 10-speed drivetrain for $200 more but score a point lower on Genius (79 vs 80), so the extra gears cost more and test slightly worse.
Mokwheel Obsidian review Mokwheel Obsidian 2.0 review Mokwheel Obsidian ST 2.0 review
Similar bikes
Mokwheel Obsidian
A fat-tire off-roader with big power, a huge battery, and a throttle, built for long days across gravel, sand, and trails.
Read the review Genius 79 / 100Mokwheel Obsidian 2.0
A well-built fat-tire off-roader with a huge battery, real climbing muscle, and a throttle, at a mid-pack price that reflects its capability.
Read the reviewMokwheel Obsidian ST is ranked on:
Guides worth reading
- E-bike classes explained: Class 1, 2 and 3Three classes, two questions: does it have a throttle, and how fast does the motor keep helping.
- Nominal vs peak watts on an e-bikeThe wattage in the headline is usually the peak figure, which can be roughly double the number the motor actually sustains.
- E-bike range explainedEvery range figure on every spec sheet is a best case. Here is how to translate it into what you'll really see.
How we score: the Genius Score blends a bike's capability against same-price peers with its value for the money, weighted for what this off-road buyer prioritises. Specs are pulled from the manufacturer's live page and normalised (nominal vs peak watts, true weight with battery). Ratings are our estimate from specs, not a lab test.