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Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike vs VIVI ACE01 Pro Electric Bike

Buy the Kingbull Hunter 2.0S if you want the bigger battery, longer stated range and a well-reviewed all-terrain bike. Buy the VIVI ACE01 Pro if you want a torque sensor, app features and the lower price. The Kingbull is $899.00 at Kingbull Bike as of November 4, 2026. The VIVI is $873.00 at Walmart as of November 4, 2026, and it hit $734.82 on October 31.

Today the VIVI ACE01 Pro Electric Bike costs $26.00 less at its best price.

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Kingbull
Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike

Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike

4.9· 809 ratings
$899.00at Kingbull BikeObserved Nov 3, 2026, 9:48 AM
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Choose the Kingbull Hunter 2.0S if you want an 864Wh battery, up to 80 miles of pedal-assist range and the stronger 4.9-star rating from 809 buyers.

Pros
  • 864Wh battery and up to 80 miles of pedal-assist range.
  • 4.9 out of 5 from 809 ratings, a large sample.

What separates them

Kingbull Hunter 2.0S Mountain Fat Tire Electric BikeVIVI ACE01 Pro Electric Bike
Price as of November 4, 2026$899.00 at Kingbull Bike$873.00 at Walmart
Battery48V 18Ah (864Wh)48V 15Ah (720Wh), removable
Stated pedal-assist rangeUp to 80 milesUp to 60 miles
Motor750W hub, 1300W peak, 85NmHub motor, 749W peak claimed in the listing, 1500W peak and 90Nm on the product page
Pedal assist sensorCadence assistTorque sensor
App and securityNot listedRoute tracking, GPS navigation, anti-theft alarm
Brakes and tiresDual-piston hydraulic discs, 26" x 4.0" fat tiresHydraulic brakes, 26" x 4.0" fat tires

Price history

$999.00$734.82
Oct 29Nov 4
  • Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike: lowest $899.00 on Nov 3 at Kingbull Bike; $949.00 on Nov 4.
  • VIVI ACE01 Pro Electric Bike: lowest $734.82 on Oct 31 at Amazon.

Prices at every store

Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike

  • Kingbull BikeNew

    In stock

    $899.00Free shippingObserved Nov 3, 2026, 9:48 AM
    Visit store
  • Riding 5 Electric Bikes officeNew

    In stock

    $949.00Free shippingObserved at 12:21 AM
    Visit store

Also available at

  • Kingbull BikesCheck price at Kingbull Bikes
  • AmazonCheck price at Amazon
  • BikeBerry.comCheck price at BikeBerry.com
All 2 stores and price history →

VIVI ACE01 Pro Electric Bike

  • WalmartNew

    In stockSold by Vivi StoreReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $873.00Free shippingVerified
    Visit store

Also available at

  • AmazonCheck price at Amazon
  • VIVICheck price at VIVI

Specs compared

SpecKingbull Hunter 2.0S Mountain Fat Tire Electric BikeVIVI ACE01 Pro Electric Bike
Frame MaterialSteelSteel
ColorBlackSteel Blue
With Hydraulic BrakeYesYes
TypeMountain—
Number Of Speeds7 speed—
Tire Width4 inch tires—
actual_color—Green

What reviewers say

Kingbull Hunter 2.0S Mountain Fat Tire Electric Bike

Owners rate it 4.9 out of 5 across 809 ratings and describe a smooth, confident ride on grass, dirt, gravel and loose ground. Power on hills and the hydraulic brakes draw the most praise; the derailleur and headlight are the recurring gripes.

Pros
  • Smooth ride over grass, dirt and gravel
  • Strong power on steep hills
  • Easy assembly, mostly pre-assembled
  • Fat tires and responsive hydraulic brakes build confidence
Cons
  • Derailleur needs adjusting and sometimes hangs between 1st and 2nd
  • Headlight not bright enough and can be outrun at top speed
  • Bike is heavy to move around

VIVI ACE01 Pro Electric Bike

With 4.7 out of 5 from 118 ratings, owners mostly praise the power and the natural feel of the torque sensor. One reviewer calls it the most powerful peak single-motor e-bike they have tried and says it pulls hard.

Questions and answers

Which is better for long rides?
The Kingbull. Its 864Wh battery is rated for up to 80 miles in pedal assist versus 60 miles for the VIVI's 720Wh pack.
Is the VIVI worth the savings?
Yes if you want a torque sensor and app features. It is $873.00 at Walmart as of November 4, 2026, $26 under the Kingbull, and it fell to $734.82 on October 31.
Which has the better motor?
Hard to call. The Kingbull states 750W nominal, 1300W peak and 85Nm. The VIVI's own materials disagree, listing 749W peak in the description and 1500W peak with 90Nm on the product page.
Which is better reviewed?
The Kingbull, at 4.9 out of 5 from 809 ratings. The VIVI is 4.7 out of 5 from 118 ratings.
Do both have hydraulic brakes and fat tires?
Yes. Both use hydraulic disc brakes and 26 x 4.0-inch fat tires, and both have steel frames.
Which is better for hills?
Both claim strong torque. The VIVI's torque sensor adjusts assist to pedal effort, which helps on climbs, but its motor figures are inconsistent, so the Kingbull's stated 85Nm is the firmer number.

More comparisons

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Buying guides that pick them

  • Best electric mountain bikes for trail riding
  • Best electric bikes with 30+ miles of range
Dual-piston hydraulic brakes and 4-inch fat tires for sand, mud and snow.
  • IPX6 water-resistant electronics and a fork with lockout.
  • Ships mostly pre-assembled with pump, lock and tool kit.
  • Cons
    • Heavier than many riders expect.
    • Buyers report the derailleur needs adjusting and can hang between 1st and 2nd gear.
    • Headlight is dim and easy to outrun at top speed.
    • $899.00 is $26 more than the VIVI as of November 4, 2026.
    VIVI
    VIVI ACE01 Pro Electric Bike

    VIVI ACE01 Pro Electric Bike

    4.7· 118 ratings
    $873.00at WalmartVerified
    Visit store

    Choose the VIVI ACE01 Pro if you want a torque sensor, app control with GPS and anti-theft alarm, and the lower price at Walmart.

    Pros
    • Torque sensor gives smoother, more natural pedal assist than cadence.
    • App control with route tracking, GPS navigation and anti-theft alarm.
    • Removable 720Wh battery charges in 4-6 hours.
    • $873.00 at Walmart as of November 4, 2026, and it dropped to $734.82 on October 31.
    • 90Nm torque claimed for steep hills.
    Cons
    • Motor output is inconsistent across the listing: 749W peak in the description, 1500W peak on the product page.
    • 720Wh battery and 60-mile range trail the Kingbull.
    • Only 118 ratings, and 4.7 out of 5 is below the Kingbull's 4.9.
    • Only one store prices it new, so there is little price competition.
    Buyer rating4.9 out of 5 from 809 ratings4.7 out of 5 from 118 ratings
    Prices and history →
    Pros
    • Strong acceleration and hill climbing
    • Smooth, natural torque-sensor assistance
    • Fat tires handle rough and loose surfaces
    Cons
    • Heavy to move and store
    • Range drops in throttle-only use
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