Fat tires. Go anywhere.
Four-inch fat tires float over gravel, grass, sand and snow. Eight models from easy-going value bikes to full-suspension trail machines, each in step-over and step-through frames.
Climb Anything
Onyx's mid-drive motor puts out 210 Nm of torque for the steepest hills and hunting trails.
Float Over It All
26 × 4.0" puncture-resistant tires grip on gravel, sand, mud and snow.
Ride All Day
48V 19.6Ah batteries on Onyx, Obsidian and Basalt are rated for up to 80 miles.
Step-over or step-through?
Same motors, batteries and fat tires. The difference is how you get on.
Step-Over
- Traditional top-tube frame
- Stiffest frame for rough trails
- Great for taller riders
- Onyx, Obsidian, Basalt, Tor Plus
Step-Through
- Swing your leg through, not over
- Easier for stiff hips, knees and backs
- Easier stops and starts on hills
- Onyx ST, Obsidian ST, Basalt ST, Mesa Plus ST
All 8 Fat Tire Models
Fat Tire specifications
| Model | Motor | Torque | Battery | Range* | Top speed | Tires | Weight | Payload | Rider height | Brakes | Sensor |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Onyx / Onyx ST | 1000W mid-drive (1300W peak) | 210 Nm | 48V 19.6Ah | 60–80 mi | 28 mph PAS / 20 throttle | 26 × 4.0" | 88 lbs | 560 lbs | 5'5"–6'7" | 4-piston hydraulic | Torque + cadence |
| Obsidian 2.0 / ST 2.0 | 1000W (1300W peak) | 105 Nm | 48V 19.6Ah | 60–80 mi | 28 mph PAS / 20 throttle | 26 × 4.0" | 77 lbs | 560 lbs | 5'6"–6'8" | Hydraulic disc | Torque + cadence |
| Basalt 2.0 / ST 2.0 | 750W (1100W peak) | 90 Nm | 48V 19.6Ah | 60–80 mi | 28 mph PAS / 20 throttle | 26 × 4.0" | 80 lbs | 450 lbs | 5'2"–6'8" (by size) | Hydraulic disc | Torque + cadence |
| Tor Plus | 750W (1100W peak) | 90 Nm | 48V 15Ah | 50–60 mi | 28 mph PAS / 20 throttle | 26 × 4.0" | 81 lbs | 450 lbs | 5'6"–6'8" | Hydraulic disc | Cadence |
| Mesa Plus ST | 750W (1100W peak) | 90 Nm | 48V 16Ah | 50–60 mi | 28 mph PAS / 20 throttle | 26 × 4.0" | 72 lbs | 400 lbs | 5'2"–6'4" | Mechanical disc | Cadence |
Specifications from Mokwheel and subject to change. PAS = pedal assist. Step-through versions share the same motor and battery; weight and fit vary slightly.
Racks, bags, batteries & parts
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Test the Fat Tire lineup in Des Moines
EzipNzoom · 5454 NE 14th Street, Des Moines, IA
Tue–Thu 12–6 PM · Fri 12–5 PM · Closed Mon
📞 (515) 567-1930Prices shown are our current prices and may change; the crossed-out price is Mokwheel's listed regular price (MSRP). Specifications are from Mokwheel and subject to change. *Range is Mokwheel's estimate and varies with rider weight, terrain, temperature, tire pressure and assist level. Colors and availability vary; call to confirm. Taxes extra. Images courtesy of Mokwheel and are for illustration.