Ariel Rider Kepler 52V Fat Tire Electric Bike
- Class 2
- 1,001-1,500 Wh
- 61-80 mi claimed
- 351-400 lb max load
SVT Score, Upper
A Class 2 fat-tire e-bike with a removable 1,040 Wh battery, 118 Nm hub motor, 203 mm four-piston brakes and Apple Find My, at nearly 99 lb.
$1,699
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Usability
6.1 out of 10- Cells: Samsung 21700, resin-potted, 52 V 3 A charger
- Peak: 1,940 W stated, not scored
- Without battery: 84 lb
- Speed: ships Class 2 at 20 mph; Class 3 setting to 28 mph where legal
- Searched: Intertek UL SGS TÜV SÜD CSA CPSC Health Canada Certipedia
Better on verificationPuckipuppy GoldenR Pro Dual-Motor E-Bike$1,999.99Scores 6.0- Registration: required within 30 days of delivery
Better on warranty & supportPuckipuppy GoldenR Pro Dual-Motor E-BikeThe battery. $1,999.99Scores 5.0- Twin: Step-Thru frame at $1,699.00
Strengths
- Strong four-piston brakes
- Air fork smooths rough roads
- Apple Find My tracking built in
- Rack and fenders come fitted
- Battery lifts out to charge indoors
Drawbacks
- Very heavy to lift or carry
- Only one year of warranty cover
- Owners report slow support on repairs
- Speed unlock goes past the class limit
- Short return window with restocking fees
A well-equipped fat-tire commuter for big riders, but very heavy to lift
Specs
- TypeFat Tire
- E-Bike ClassClass 2
- Battery1,001-1,500 Wh
- MotorHub
- Top Speed21-28 mph
- Claimed Range61-80 mi
- WeightOver 85 lb
- Max Rider Load351-400 lb
- BrakesHydraulic disc
- SuspensionFront
- FoldingDoes not fold
- CertificationsClaimed only
- Warranty1 Year
At a glance
- Shimano Altus 8-speed
- 60 lb rear rack limit
- Horn built into headlight
The ARIEL RIDER trademark is registered at the USPTO (No. 6740931) to Horcon Danismanlik Ve Ticaret Limited Sirketi of Ankara, Turkey.
- Ariel Rider bikes are sold in the US by ARBA International LLC dba Ariel Rider, a Washington limited liability company in Tukwila, Washington.
- Ariel Rider sells its bikes direct through its own store at arielrider.com and ships them from the Seattle area.
- The Amazon listings found under the brand's name are batteries and chargers from third-party sellers.
- It sells fat-tire and moped-style e-bikes, plus an off-road line of power bikes this site does not cover.
- None of Walmart, Best Buy, Target, Costco, Dick's Sporting Goods, REI, Home Depot or Lowe's sells Ariel Rider e-bikes; the brand sells through its own site (October 2026).
The Ariel Rider Kepler (2026) is a fat-tire e-bike that ships in a Class 2 setup, with a 52 V, 20 Ah removable battery of about 1,040 Wh and a 750 W nominal rear hub motor rated 118 Nm (1,940 W peak).
It has four-piston hydraulic disc brakes with 203 mm rotors, a 100 mm air fork with lockout, a suspension seatpost, a switchable torque or cadence sensor and 24 x 4.0 in puncture-resistant tires.
It weighs 98.6 lb with the battery (84 lb without it) and is rated for a 400 lb total payload, with a 60 lb limit on the fitted rear rack. The maker claims 50 to 75 miles of range and 20 mph on throttle and assist, with a Class 3 setting to 28 mph on pedal assist where legal.
It has integrated lights, rear turn signals, a horn, a colour Bluetooth display with an app and over-the-air updates, Apple Find My, fenders, a Shimano Altus 8-speed drivetrain and an IP65 rating. The Step-Thru frame sells on the same listing at the same $1,699.00 and the same weight.
Questions answered from our data
How much does an electric bike cost?The 185 electric bikes we list run from $799 to $12,500, with a median of $1,895.
Are electric bikes UL certified?77 of the 185 electric bikes we list carry a UL 2849 listing we could look up by model.
How far can an electric bike go?158 of the 185 electric bikes we list claim 41 miles or more on a charge, each on its maker's own basis.
Which electric bikes have a battery over 1,000 Wh?10 of the 185 electric bikes we list have a battery over 1,000 Wh, as their makers rate it.
