Biktrix Stunner-X 750W 48V/14.5Ah Comfort Cruiser Fat Tire Mid-Drive Step-Through Electric Bicycle with 5 Levels of Pedal Assist (PAS) and Thumb Throttle
New stock - Latest model. Limited Supply.
There is nothing like the feel of a mid-drive motor cruiser fat tire eBike, and Biktrix knows how to build the best.
The Stunner-X is a new class of off-road cruiser. With a powerful 750W mid-drive and classic styling, this is as comfortable as an on/off-road bike gets. Perfect for street and a bit of trails. The 120Nm torque from the motor will make sure you speed up any hill in your path.
Features of the Biktrix Stunner-X 750W 48V Cruiser Fat Tire Mid-Drive Step-Through eBike
- Beautiful classic styling
- Powerful and efficient 750W mid-drive Bafang motor
- Mid-drive motor - The mid-drive motor will let you roam cities, climb hills, and explore with ease
- Removable battery - All our bikes have removable batteries. Each bike comes with a unique key that's necessary to unlock the battery. Four choices to choose from
- 25-50 miles range based on battery choice (depending on rider's weight and riding conditions)
- 5 programmable Levels of Pedal Assist (PAS) to help you find just the right amount of help from the motor
- Two hydraulic brake options, for maximum stopping power in all conditions
- Three different wheelsets to choose from, to accommodate different size riders
- Large, easy to read LCD display with a lot of information
- Front suspension fork to soak up the bumps and add safety
- Shimano 7-speed (gears) transmission
- Integrated front light - Never ride blind again. Our bikes come with front lights integrated with the main battery of the bike
- Velo oversized, comfy cruiser seat
- Adjustable stem to help you find the perfect riding position
- Kenda fat tires, to tackle all kinds of terrain
- Max load: 330 lbs
- Includes front and rear fenders, and rear rack (value $100)
The Stunner X has been built to last with top quality components like 160mm hydraulic disc brakes, the adjustable up to 5 Levels of Pedal Assist (PAS) right on the display, or the thumb throttle. Top it off with a RST Guide front suspension and this will be your favorite bicycle you’ve ever ridden.

26x4 recommended for riders 5'6" and taller
24x3 recommended for riders 5'1" and taller
Many people associate the step-through bicycle as being for women, however, they are convenient for any gender. The big advantage of step-through bikes is that they make it easier and much more comfortable to mount the bike. Your feet will be able to touch the ground and there are no worries about losing your balance and possibly falling while trying to get on it.
750W Bafang mid-drive motor
The mid-motor makes this bike very versatile. Mid-drive motors are much more efficient than hub drives as they can use the bike's gears as transmission. Climb the steepest hills. Conquer anything.

Thumb-throttle & control pad
The Stunner-X comes with throttle-on-demand and Cadence/PAS (Pedal Assist Sensor). As you pedal, the motor measures how often you're pedaling and helps you proportionally. You can boost motor performance by setting assist levels between 1 to 5 levels - where level 1 gives you least assist, but most range, while level 5 gives you maximum assist and least range.

LCD display
The display gives you important information including speed, battery life, range, odometer, and pedal assist level.

RST guide front suspension
The suspension fork features 80mm of travel, preload, and lockout.

160mm hydraulic disc brakes
When it's easy to go fast, you need strong and dependable stopping power. These disc brakes will swiftly and reliably bring you to a halt.

7-speed Shimano Alivio transmission
From climbing steep hills to holding maximum speed on the flats and everything between, the Shimano 7-speed has you covered.

The battery is easily removed with a quick-release mechanism. The Biktrix Stunner-X electric bicycle comes with an integrated headlight, front and rear fenders, and a rear rack to put all your goodies.
4" Fat Tires
Whether you're up against sand, mud, or snow these tires will completely handle it. The Stunner X is outstanding for all-season and all-terrain riding.


Use it for exercise, commuting or just to take a leisurely ride. The Biktrix Stunner X is a real head-turner.
Personalize your Biktrix eBike and build a bike that is just perfect for you. Increase your bike’s functionality and boost your experience.
Compare wheelset

26x4 recommended for riders 5'6" and taller
24x3 recommended for riders 5'1" and taller
Compare battery options

Three ways to ride the Biktrix Stunner-X 750W 48V Cruiser Fat Tire Mid-Drive Step-Through eBike
- Pedal only (with no help from the motor)
- Pedal Assist (with 5 levels of assist to choose from)
- Throttle only (effortless like a motorcycle)
The Biktrix Stunner X can be used as a normal bike where the rider provides all the power, or you can use just the throttle and let the bike do all of the work. There is also an in-between option, Pedal Assist, where the rider pedals and the motor provides a great boost at the same time. You can choose the level that is right for your type of riding. The Levels of Pedal Assist allow for increased ride efficiency, resulting in less strain on your knees while riding. It makes riding fun and effortless.
Specifications of the Biktrix Stunner-X 750W 48V Cruiser Fat Tire Mid-Drive Step-Through eBike
COMPONENT | SPECIFICATION |
FRAME |
6061 ALUMINUM STEP THRU FRAME
|
FORK |
RST GUIDE, 80MM TRAVEL, 135MM DROPOUT, PRELOAD AND MECHANICAL LOCKOUT (26X4" FAT TIRE) / GT-MRK 80MM W/ LOCKOUT, COMPRESSION (24X3" SLICKS)
|
HEADSET |
THREADLESS 1-1/8 STRAIGHT
|
SHIFTER REAR | SHIMANO ATLUS 7 SPEED |
REAR DERAILLEUR | SHIMANO ATLUS 7 SPEED |
CASSETTE | SHIMANO 11-32T |
CHAIN | KMC Z7 |
CRANK SET | 170MM 42T |
BOTTOM BRACKET | BBS02 MOTOR |
FRONT HUB | 135MM |
FRONT AXLE/SKEWER | 5MM QR |
REAR HUB | 170MM |
REAR AXLE/SKEWER | 5MM QR |
RIMS |
BLACK 26"- 75MM 36H (26X4" FAT TIRE) / BLACK 24"- 40MM 36H (24X3" SLICKS)
|
TIRES |
KENDA JUGGERNAUT 26X4" / SLICKS 24X3" / MTB 24X3"
|
BRAKES |
TEKTRO DUAL PISTON HYDRAULIC W/ 160MM
|
BRAKE LEVERS |
TEKTRO HYDRAULIC W/ ADJUSTABLE REACH & MOTOR CUTOFF
|
HANDLEBAR |
25.4MM CLAMP BULLHORN CRUISER BARS
|
STEM | ADJUSTABLE QUILL |
GRIPS | ERGO SLIDE ON |
SEAT POST | ALUMINUM 30.4MM |
SEAT POST CLAMP | 38.5MM QR |
SADDLE | CRUISER FOAM SPRUNG |
MOTOR | 750W BBS02 MID-DRIVE |
DISPLAY | C961 |
LIGHTS | INTEGRATED HEADLIGHT |
THROTTLE | THUMB THROTTLE |
ASSIST LEVELS | 0-5 |
ASSIST TYPE | CADENCE |
MINIMUM RIDER'S HEIGHT | 5'1" |
MINIMUM SEAT HEIGHT | 31" - 32" |
OTHER |
ALUMINUM FENDERS, RACK, ADJUSTABLE KICKSTAND
|


BIKE GEOMETRY | 24" | 26" | |||
MM | INCHES | MM | INCHES | ||
1 | EFFECTIVE TOP TUBE LENGTH | 660.0 | 26.0 | 742.9 | 29.2 |
2 | SEAT TUBE LENGTH (CLASSIC BIKE SIZE) | 393.7 | 15.5 | 455.0 | 17.9 |
3 | REACH | 381.0 | 15 | 455.0 | 17.9 |
4 | STACK | 609.6 | 24 | 680.0 | 26.8 |
5 | CHAINSTAY LENGTH | 482.6 | 19 | 580.0 | 22.8 |
6 | STANDOVER HEIGHT | 508.0 | 20 | 480.0 | 18.9 |
7 | HEAD ANGLE | 68.0 DEGREES | 68.0 DEGREES | ||
8 | SEAT ANGLE | 67.0 DEGREES | 67.0 DEGREES | ||
9 | HEAD TUBE LENGTH | 215.9 | 8.5 | 220.0 | 8.7 |
10 | FORK LENGTH | 452.1 | 17.8 | 500.0 | 19.7 |
11 | FRONT CENTER | 622.3 | 24.5 | 725.0 | 28.5 |
12 | BB (BOTTOM BRACKET) DROP | 55.9 | 2.2 | 55.9 | 2.2 |
13 | FORK OFFSET | 50.8 | 2 | 50.8 | 2.0 |
14 | WHEELBASE | 1,220.0 | 48 | 1,220.0 | 48.0 |
15 | TOTAL LENGTH | 1,752.6 | 69 | 1,940.0 | 76.0 |
16 | MAX SEAT HEIGHT | 990.6 | 39 | 1,020.0 | 40.2 |
17 | MIN SEAT HEIGHT | 787.4 | 31 | 820.0 | 32.3 |
18 | HANDLEBAR HEIGHT | 1,104.9 | 43.5 | 1,270.0 | 50.0 |
19 | WEIGHT | 30.0 KG | 66.0 LB | 30.0 KG | 66.0 LB |
20 | FOLDED DIMENSIONS | N/A | N/A |
Download Display Manual HERE
Download Old Juggernaut User Manual HERE (very useful for all Biktrix eBikes)