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Deal.ai › Compare

Macfox X1S Commuter E-bike vs Kepler 52V Fat Tire E-bike

The Kepler is the stronger bike on paper and in owner reports: a 750W motor peaking near 1,940W, a 52V 20Ah battery, 8 speeds, 4-piston brakes with 203mm rotors and a 400 lb limit. The Macfox X1S is a simpler, lighter-duty Class 2 commuter with a steel frame, one speed and front suspension only, and owners like its street-legal 20 mph cap and wheelie-friendly build. Buy the Macfox if you want a modest, legal, low-maintenance city bike; buy the Kepler if you want power, range and trail capability and can handle a 73 lb machine.

  • Choose the Macfox X1S if you want a street-legal 20 mph Class 2 commuter with a steel frame, one gear and minimal upkeep for short city trips.
  • Choose the Kepler if you want real power, 75-mile-class range, 8 speeds and trail-capable fat tires, and you can live with a 73 lb bike.

Prices

  • Macfox X1S Commuter E-bike: $1,149.00 at JDubs Racing (checked today)
  • Kepler 52V Fat Tire E-bike: $1,399.00 at Ariel Rider Ebikes (last seen Nov 10)
  • Difference: the Macfox X1S Commuter E-bike is $250.00 cheaper than the Kepler 52V Fat Tire E-bike at the latest prices (Nov 10 and Nov 12)
Macfox
Macfox X1S Commuter E-bike

Macfox X1S Commuter E-bike

4.7(1,194 ratings)
$1,149.00at JDubs RacingChecked 1 h ago
See all prices and details
Visit JDubs Racing
Pros
  • Street-legal Class 2, so no license or registration worries
  • Steel frame handles wheelie practice and DIY customization
  • UL 2849 system and UL 2271 batteries
  • Front suspension and 4-inch tires soften rough pavement
  • Lighter and simpler than the Kepler for short commutes
Cons
  • 28-mile single-battery range is short for longer rides
  • Single speed limits climbing and pace control
  • Owners report motor cutouts and controller issues on newer bikes
  • No app, tracking or OTA updates
Kepler
Kepler 52V Fat Tire E-bike

Kepler 52V Fat Tire E-bike

4.9(600 ratings)
$1,399.00at Ariel Rider EbikesChecked Nov 10
See all prices and details
Visit Ariel Rider Ebikes
Pros
  • Strong acceleration and hill climbing from the 1,940W peak motor
  • Long range: 50-65 miles typical, up to 75 claimed
  • 4-piston brakes with 203mm rotors for a heavy, fast bike
  • 8-speed drivetrain with switchable torque and cadence assist
  • Apple Find My, color display and OTA updates; 400 lb limit
Cons
  • 73 lb is heavy to lift, store or carry upstairs
  • Noticeable gap between the 2nd and 3rd assist levels
  • 28+ mph speed is not legal on every path or in every state
  • Some early-ride minor issues reported by owners

What separates them

Macfox X1S Commuter E-bikeKepler 52V Fat Tire E-bike
Motor and speed500W nominal, 750W peak, capped at 20 mph (Class 2)750W nominal, 1,940W peak, 28+ mph where legal
Battery and rangeSingle battery about 28 miles; 56 miles with a second battery52V 20Ah (~1,040Wh), up to 75 miles claimed, 50-65 typical
DrivetrainSingle speed8-speed with torque and cadence assist, switchable
BrakesHydraulic disc, rotor size not stated4-piston hydraulic with 203mm rotors front and rear
Frame and weight limitHigh-carbon steel, rider height from 5'3", limit not statedAL6061 aluminum, 400 lb limit, high-step or step-through
Tires and terrain20 x 4.0 inch knobby fat tires, city and light dirt24 x 4.0 inch puncture-resistant fat tires, trails and off-road
SuspensionFront suspension onlyNot specified in the listed specs
Security and displayBacklit LCD display, no trackingColor display with app and OTA updates, Apple Find My built in

Price history

$1,399.00$1,374.95
Oct 29Nov 10
  • Macfox X1S Commuter E-bike: lowest $1,374.95 on Oct 29 at SaferWholesaleSite; $1,399.00 on Oct 30.
  • Kepler 52V Fat Tire E-bike: lowest $1,399.00 on Oct 31 at Ariel Rider Ebikes; $1,399.00 on Nov 10.

Prices at every store

Macfox X1S Commuter E-bike

  • JDubs RacingNew

    In stockReturn policy

    $1,149.00Checked 1 h ago
    Visit JDubs Racing
  • Macfox BikeNew

    In stockReturn policy

    $1,199.00Checked 1 h ago
    Visit Macfox Bike
  • Tampa Bay eBikesNew

    In stockReturn policy

    $1,399.00Checked 1 h ago
    Visit Tampa Bay eBikes
  • SaferWholesaleSiteNew

    Availability unknown

    $1,374.95Checked Oct 29
    Visit SaferWholesaleSite

Also available at

  • MacfoxCheck price at Macfox
All 8 stores and price history →

Kepler 52V Fat Tire E-bike

  • Ariel Rider EbikesNew

    In stock

    $1,399.00Free shippingChecked Nov 10
    Visit Ariel Rider Ebikes

Also available at

  • Ariel Rider EbikesCheck price at Ariel Rider Ebikes
Prices and history →

Specs compared

SpecMacfox X1S Commuter E-bikeKepler 52V Fat Tire E-bike
Motor power500W750W nominal · 1,940W peak
Range28 milesUp to 75+ Miles per Charge, 35-75+ Miles Range
Frame materialhigh-carbon steelAL6061
Suspension TypeFront SuspensionFront suspension
Tire Width4 inch tires4 in
Wheel Size20 inch wheels24-inch
Peak motor power750W—
Top speed20mph—
Dual battery range56 miles—
Battery certificationUL 2271 Certified—
Warranty2-year warranty—
TypeHybrid—
Show all 40 specsShow fewer specs
SpecMacfox X1S Commuter E-bikeKepler 52V Fat Tire E-bike
With Hydraulic BrakeYes—
ColorBlack—
Age GroupAdult—
Number Of Speeds1 speed—
Frame Size31.5 inch frame—
Battery capacity—52V 20Ah (~1,040Wh)
Max range—up to 75 miles
Drivetrain speeds—8-speed
Brake rotors—203 mm rotors (front and rear)
Brake type

What reviewers say

Macfox X1S Commuter E-bike

  • 4.7 / 51,194 ratings

Rated 4.7 out of 5 from 1,194 ratings, the X1S is liked for being street legal, fun to ride and solidly built. Complaints center on range and occasional motor or controller faults.

What people mention
  • Street legalityPraisedOwners like that the Class 2 setup keeps them from worrying about being pulled over.
  • Battery rangeMixedSome call the range good, while others say the battery doesn't go far enough.
  • Motor reliabilityCriticisedA few owners report the motor cutting out on fairly new bikes.
  • ControllerCriticisedSome buyers report issues with the controller unit.

Kepler 52V Fat Tire E-bike

  • 4.9 / 5600 ratings

Riders rate it 4.9 out of 5 from 600 ratings and mostly praise the power, range and build. Complaints are small: an uneven step between assist levels and a few early-ride issues.

What people mention
  • PowerPraisedOwners say it accelerates quickly and climbs hills with the 1,940W peak motor.
  • Battery and rangePraisedRiders report long battery life and range close to the 50-65 mi typical figure.
  • Build qualityPraisedBuyers describe it as solid and well-built with good looks.
  • ValuePraised

Questions and answers

Which is better for daily city commuting?
The Macfox is the easier city bike: lighter, capped at 20 mph and legal on most paths. The Kepler commutes fine too and adds range and speed, but its 73 lb weight makes stairs and tight storage harder.
Which has more range?
The Kepler. Its 52V 20Ah battery gives roughly 50-65 miles typical and up to 75 claimed. The Macfox does about 28 miles on one battery and 56 with a second one.
Which is better off-road?
The Kepler. It has 24-inch fat tires, 8 speeds, 203mm 4-piston brakes and a 400 lb limit, and is rated for trails. The Macfox is a street-oriented Class 2 bike with front suspension only.
Which lasts longer?
The Kepler's aluminum frame and higher-rated components point to a longer service life under hard use. The Macfox's steel frame is durable, but owners report motor and controller faults, and its single speed wears simply.
Is the Kepler worth stepping up to?
Yes if you ride long distances, climb hills or want trail capability. If you only make short legal city trips and want low maintenance, the Macfox covers that without the extra weight and complexity.
Which is easier to assemble and maintain?
The Macfox: one speed, no app, fewer parts. Kepler owners call assembly easy, but 8 speeds, hydraulics and electronics mean more to service.

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Buying guides that pick them

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4-piston hydraulic brakes
Weight limit—400lbs
Pedal assist—Torque + cadence, switchable
Display—Bright color display + app + OTA updates
Security—Apple Find My built in
Intended Use—Commuting
Usage Terrain—Trails, Off-road
Suitable Terrain—Trails, City, Off-road, Off-road trails
Typical Users—Daily commuter, Adventurous weekend rider
Maximum Speed—28+ Mph (Where legally allowed)
Riding Style—Commuting, Venturing off-road
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 Type—Low-Step, High-Step
Frame Shape—Low-Step, High-Step
Wheelbase—46.2 in (HIGH-STEP)
Owners call it good value for the parts and accessories included.