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VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain Bike vs Large Frame Class 2 Electric Bike for Adults

Buy the VIVI if you want more motor and battery for the money: 1000W peak and a 48V 18Ah pack at $529.99 at Target as of October 28, 2026. Buy the HELOKEEP if you need a certified battery and a higher load rating: UL 2849 and 330 lb at $499.99. The HELOKEEP is $30 cheaper, but the VIVI gives you a bigger battery and a lighter aluminum frame.

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VIVI
VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain Bike

VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain Bike

Choose the VIVI if you want the most motor and battery capacity per dollar and a lighter aluminum frame.

Pros
  • 1000W peak motor for hill climbing and heavier riders
  • 48V 18Ah battery is larger than the HELOKEEP's 15.6Ah
Aluminum frame resists rust and is lighter than steel
  • 7-speed drivetrain and 26 x 4.0 fat tires
  • $529.99 at Target as of October 28, 2026, 47% off regular price
  • Cons
    • No UL 2849 certification stated
    • Load capacity, weight and range not published
    • Full specs are thin, so check the battery and brakes before buying
    HELOKEEP
    Large Frame Class 2 Electric Bike for Adults

    Large Frame Class 2 Electric Bike for Adults

    4.3· 28 ratings

    Choose the HELOKEEP if a UL 2849 certified battery and a 330 lb load rating matter more to you than peak watts.

    Pros
    • UL 2849 certified battery
    • 330 lb max load, higher than most budget ebikes
    • Front suspension and disc brakes
    • Stated 35 mi range, up to 60 mi with pedal assist
    • $499.99, $30 less than the VIVI
    Cons
    • High carbon steel frame is heavy at 71 lb
    • 750W nominal motor is less than the VIVI's 1000W peak
    • 8-hour charge time
    • 20 mph Class 2 limit

    What separates them

    VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain BikeLarge Frame Class 2 Electric Bike for Adults
    Price$529.99 at Target as of October 28, 2026$499.99
    Motor1000W peak750W nominal, 1500W peak
    Battery48V 18Ah48V 15.6Ah, UL 2849 certified
    Frame materialAluminumHigh carbon steel
    Load capacityNot listed330 lb
    SuspensionNot listedFront suspension
    WeightNot listed71 lb
    Stated rangeNot listed35 mi (up to 60 mi with pedal assist)

    Price history

    $529.99$499.99
    Oct 28Oct 30
    • VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain Bike: lowest $529.99 on Oct 28 at Target; $529.99 on Oct 30.
    • Large Frame Class 2 Electric Bike for Adults: lowest $499.99 on Oct 29.

    Prices at every store

    VIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain Bike

    • TargetCheck price at Target
    Prices and history →

    Large Frame Class 2 Electric Bike for Adults

    • WalmartCheck price at Walmart
    Prices and history →

    Specs compared

    SpecVIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain BikeLarge Frame Class 2 Electric Bike for Adults
    Frame MaterialAluminumHigh Carbon Steel
    ColorRedBlack
    Age GroupAdultAdult
    TypeMountain—
    Number Of Speeds7 speed—
    Bicycle type—Mountain Bikes
    Maximum travel distance—35 mi
    Maximum speed—20 mph
    Battery capacity—15.6 Amp Hours
    Electric bicycle class—Class 2
    Charging time—8 h
    Bicycle brake design—Disc Brakes
    Show all 32 specsShow fewer specs
    SpecVIVI Electric Bike 26" x 4.0 Fat Tire Ebikes Peak 1000W Electric Mountain BikeLarge Frame Class 2 Electric Bike for Adults
    Suspension—Front Suspension
    Wheel size—26 in
    Weight—71 lb
    Volts—48 Volts
    Watts—750 Watts
    Brand—HELOKEEP
    Speeds—7
    Max load—330 lb
    Drivetrain—1X7
    Frame size—76 in

    What reviewers say

    Large Frame Class 2 Electric Bike for Adults

    With 28 ratings averaging 4.3 out of 5, owners generally report the bike works as a budget fat-tire e-MTB. Complaints center on weight and assembly rather than the motor.

    Pros
    • Strong pull from the 750W motor
    • Stable, comfortable ride on fat tires
    • Good value at the price
    Cons
    • Very heavy to move and store
    • Some assembly and adjustment needed out of the box

    Questions and answers

    Which is better for hills and heavier riders?
    The VIVI has the higher peak rating at 1000W, which helps on climbs. The HELOKEEP's 750W geared hub motor is rated for 330 lb, so it handles weight well too. Pick the VIVI for raw power and the HELOKEEP for a published load limit.
    Is the HELOKEEP worth $30 less than the VIVI?
    Yes, if battery safety and load rating matter to you. The HELOKEEP has a UL 2849 certified battery and a 330 lb capacity at $499.99. The VIVI gives you a bigger 18Ah battery and an aluminum frame for $529.99 at Target as of October 28, 2026.
    Which lasts longer per charge?
    The VIVI's 48V 18Ah battery holds more energy than the HELOKEEP's 15.6Ah pack, so expect longer rides at the same assist level. The HELOKEEP states 35 mi and up to 60 mi with pedal assist. The VIVI does not publish a range.
    Which is easier to carry upstairs or put on a rack?
    The VIVI's aluminum frame should be lighter than the HELOKEEP's 71 lb steel frame. VIVI does not publish a weight, so confirm it before buying if you carry the bike often.
    Do both have fat tires and disc brakes?
    Both use 26 x 4.0 fat tires. The HELOKEEP lists disc brakes and front suspension. The VIVI listing does not state its brake type, so check before you buy.
    Which is better for a heavier rider?
    The HELOKEEP publishes a 330 lb max load, so it is the safer pick if you are near that range. The VIVI does not list a capacity, so do not assume it matches.

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    Motor type—Geared Hub
    Battery life—2 years
    Rim material—Alloy Aluminum
    Size descriptor—Large
    Bicycle Tire Size—20
    Height Range—5'5′′ - 6'5”
    Power Type—Battery
    Amps—15.6 Amps
    Minimum Recommended Age—18 years
    actual_color—Black