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Ariel Rider
Ariel Rider Kepler 52V Fat Tire E-bike

Ariel Rider Kepler 52V Fat Tire E-bike

4.7· 592 ratings

Best price now

$1,399.00at Ariel Rider EbikesObserved at 1:08 PM
Deal: 33% off at Ariel Rider Ebikes →

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Our take on the Ariel Rider Kepler 52V Fat Tire E-bike

The Ariel Rider Kepler is a fat-tire electric bike built for commuting and off-road riding, with a 750W motor peaking at 1,940W and 118 Nm of torque. It pairs a 52V 20Ah Samsung battery (about 1,040Wh) with 26-inch, 4-inch-wide fat tires, front suspension with 80mm travel, and 4-piston hydraulic brakes with 203mm rotors. It comes in low-step and high-step frames, weighs 73 lb, and is rated for up to 75 miles of range and 28+ mph where allowed. The only new price seen is $1,399 at Ariel Rider Ebikes as of November 3, 2026, and it has held at that level since October 31.

Best forCommuters who want speed and range in one bikeRiders mixing paved roads with trails and dirtHeavier or taller riders wanting a sturdy frameBuyers who want high power at a mid-range price
Pros
  • Strong 750W motor with 1,940W peak and 118 Nm torque for hills
  • Large 52V 20Ah Samsung battery rated up to 75 miles
  • 4-piston hydraulic brakes with 203mm rotors front and rear
  • Fat tires, front suspension and rack included in the box
  • Low-step and high-step frame options
  • Assembled easily according to owners
Cons
  • Heavy at 73 lb, hard to carry or store
  • Noticeable gap between pedal assist levels 2 and 3
  • Fat tires and weight make it slower to handle than a city bike
  • Only one store lists it new, so price competition is limited

Ariel Rider Kepler 52V Fat Tire E-bike prices at every store

  • Ariel Rider EbikesNew

    In stock

    $1,399.00Observed at 1:08 PM
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Ariel Rider Kepler 52V Fat Tire E-bike price history

$1,399.00$1,399.00
Oct 31Nov 3

Lowest price we've seen: $1,399.00 on Oct 31 at Ariel Rider Ebikes. Tracked across 1 store since Oct 31.

What reviewers say

Rated 4.7 out of 5 from 592 ratings, the Kepler draws praise for power, range and build quality. The main recurring complaint is a jump in assist between levels 2 and 3.

Pros
  • Great power, speed and hill climbing
  • Long battery range
  • Solid build quality and components
  • Easy assembly and good value
Cons
  • Noticeable gap between 2nd and 3rd pedal assist levels

From Ariel Rider Ebikes

  • 24" x 4.0" puncture-resistant fat tires with reflective sidewalls
  • 750W nominal motor, 1,940W peak, 118 Nm torque
  • 52V 20Ah (~1,040Wh) Samsung 21700 battery with smart BMS
  • Up to 75 miles range; 50-75 mi typical
  • 4-piston hydraulic disc brakes with 203mm rotors front and rear
  • Torque and cadence pedal assist, switchable
Sizes
High-Step, Step-Thru
Materials
Hydroformed alloy frame; Samsung 21700 resin-potted battery cells
Fit
High-Step fits riders 5'1"-5'11"; Step-Thru fits 5'1"-5'9"
Sizing
24-inch wheels and low standover suit a wider range of riders; the high-step frame is tall, so most riders are recommended the step-through.
Guarantee
1-year warranty
Returns
Returns are policy-based and must meet eligibility requirements; bikes generally need to be unused and in original packaging, and fees may apply.
Shipping
Ships within 1-5 business days.
In the box
E-bike, MIK compatible Rear Rack, Fender Kit, E-bike Charger, Tools, Touch Up Paint
Size chart
MeasurementHigh-StepStep-Thru
Rider Height Range5'1" - 5'11"5'1" - 5'9"
Wheel Size24" x 4.0"24" x 4.0"
Bike Weight (Without Add98.6 lb97.4 lb
Stack26.3 in23.0 in
Handlebar Reach15.4 in17.2 in
Seat Tube Length15.0 in
Top Tube Length23.4 in
Head Tube Length6.3 in
Head Tube Angle69 deg
Seat Tube Angle73 deg
Chainstay Length18.5 in
Fork Length20.1 in

What buyers say

Buyers like
  • Great power, speed and hill climbing
  • Long battery range
  • Solid build quality and components
  • Great looks and ride feel
  • Easy assembly
  • Good value for the price
Buyers complain about
  • Noticeable gap between 2nd and 3rd pedal assist levels

Specifications

Intended Use
Commuting
Usage Terrain
Trails, Off-road
Suitable Terrain
Trails, City, Off-road, Off-road trails
Typical Users
Daily commuter, Adventurous weekend rider
Range
Up to 75+ Miles per Charge, 35-75+ Miles Range
Maximum Speed
28+ Mph (Where legally allowed)
Riding Style
Commuting, Venturing off-road

Questions and answers

Is the Kepler worth $1,399?
At $1,399 it undercuts most fat-tire e-bikes with this motor and battery size. You get a 1,040Wh battery, 4-piston brakes and a rack included, which is strong value at this price.
How far can it really go on a charge?
Ariel Rider rates it up to 75 miles and lists 50-75 miles as typical. Expect closer to the low end with heavy throttle use, hills or a loaded rack.
Is it legal to ride at 28 mph?
It can reach 28+ mph only where legally allowed. Many areas cap e-bike assist at 20 or 25 mph, so check your local rules before riding at full speed.
Low-step or high-step frame?
The low-step is easier to mount, especially with cargo or on uneven ground. The high-step has a 46.2-inch wheelbase and a more traditional ride feel.
What comes in the box?
The bike, a MIK-compatible rear rack, fender kit, charger, tools and touch-up paint. You assemble it yourself, which owners report is straightforward.
When is it cheapest?
The lowest price seen since October 31, 2026 is $1,399 at Ariel Rider Ebikes, the same as the current price. Watch for holiday sales, since only one store lists it new.
Where is the Ariel Rider Kepler 52V Fat Tire E-bike cheapest?
At Ariel Rider Ebikes, for $1,399.00, 33% off, as of our latest check.
Is the Ariel Rider Kepler 52V Fat Tire E-bike at its lowest price?
Yes: $1,399.00 is the lowest price we've seen for it since October 31.
What do buyers say about the Ariel Rider Kepler 52V Fat Tire E-bike?
Rated 4.7 out of 5 from 592 ratings. Buyers like: Great power, speed and hill climbing; Long battery range; Solid build quality and components. Common complaints: Noticeable gap between 2nd and 3rd pedal assist levels.
Bike Type
ebike
Design Material
Aluminum (rear rack), AL 6061 (Frame)
Weight
73 lb
Design Highlights
Water Resistant Connectors and Wire Harness
Dimensions
74 in (Total Length)
Frame Material
AL 6061
Frame Type
Low-Step, High-Step
Frame Shape
Low-Step, High-Step
Wheelbase
46.2 in (HIGH-STEP)
Tire Diameter
26 in
Tire Width
4 in
Tire Type
Fat Tires
Tire Highlights
Fat tire
Suspension Type
Front suspension
Front Suspension Travel
80 mm