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HappyRun F18 2.0 Electric Dirt Bike vs KAIJIELAISI K801 Electric Dirt Bike

Both bikes run a 6000W peak motor on a 60V pack, so the choice comes down to geometry and battery size. The HappyRun F18 2.0 is a true dirt bike: mid-drive motor, 17-inch front and 14-inch rear knobbies, 245 N.m peak torque, 46 mph and a magnetic kill switch, with owners calling it fast, easy to assemble and well built. The KAIJIELAISI K801 carries a bigger 35Ah battery, 26-inch fat tires, full suspension and a 72 km/h top speed, but it is heavier and has less traditional dirt bike geometry. Buy the HappyRun for real trail riding and jumps; buy the K801 for range and stability on loose ground.

  • Choose the HappyRun F18 2.0 if you want a genuine mid-drive dirt bike with strong torque, a kill switch and proper dirt bike wheel sizing for jumps and trails.
  • Choose the KAIJIELAISI K801 if you want the larger 35Ah battery, fat knobby tires and a more planted ride over loose dirt and long off-road stretches.

Prices

  • HappyRun F18 2.0 Electric Dirt Bike: $999.00 at Distinct Picks (last seen Nov 13)
  • KAIJIELAISI K801 Electric Dirt Bike: $1,419.00 at KAIJIELAISI (last seen Nov 13)
  • Difference: the HappyRun F18 2.0 Electric Dirt Bike is $420.00 cheaper than the KAIJIELAISI K801 Electric Dirt Bike at the latest prices (Nov 13)
HappyRun
HappyRun F18 2.0 60V/30Ah 6000W Off-Road Electric Dirt Bike

HappyRun F18 2.0 Electric Dirt Bike

HappyRun F18 2.0 60V/30Ah 6000W Off-Road Electric Dirt Bike

4.2(6 ratings)
$999.00at Distinct PicksChecked Nov 13
See all prices and details
Visit Distinct Picks
Pros
  • Mid-drive motor with 245 N.m peak torque for climbs and wheelies
  • Magnetic kill switch cuts power if you fall or separate from the bike
  • NFC card unlock and sunlight-readable color display
  • IPX5 water resistance and 300 lb load capacity
  • Owners report fast assembly, quick delivery and solid build quality
Cons
  • Owners say real-world range falls short of the claimed 60 miles
  • Throttle has a slight delay
  • Seat is reported as uncomfortable
  • Some riders notice vibration while riding
  • Plastic exterior panels
KAIJIELAISI
KAIJIELAISI K801 Electric Dirt Bike

KAIJIELAISI K801 Electric Dirt Bike

5(3 ratings)
$1,419.00at KAIJIELAISIChecked Nov 13
See all prices and details
Visit KAIJIELAISI
Pros
  • Larger 35Ah battery for longer off-road range
  • 26-inch knobby fat tires grip loose dirt well
  • Reinforced heavy-duty full suspension
  • Dual hydraulic brakes
  • LCD meter, anti-theft lock and air pump included
Cons
  • Heavier fat-tire design
  • Less traditional dirt bike geometry
  • No stated torque figure or motor layout
  • No kill switch listed

What separates them

HappyRun F18 2.0 Electric Dirt BikeKAIJIELAISI K801 Electric Dirt Bike
Battery capacity60V 30Ah (1800Wh)60V 35Ah
Motor layoutMid-drive, 6000W peak, 245 N.m peak torque6000W peak, layout not stated
Top speed46 mph, three power levels (17, 28, 46 mph)72 km/h (about 45 mph)
Tires17-inch front, 14-inch rear dirt tires26-inch knobby fat tires
SuspensionHydraulic front fork, hydraulic plus spring rear shockReinforced heavy-duty full suspension
BrakesHydraulic disc, 190mm rotorDual hydraulic
Safety and controlsMagnetic kill switch, NFC card unlock, color displayLCD meter, anti-theft lock
Weight and geometry125 lbs, traditional dirt bike stanceHeavier fat-tire build, less traditional dirt bike geometry

Price history

  • HappyRun F18 2.0 Electric Dirt Bike: lowest $999.00 on Nov 13 at Distinct Picks.

Prices at every store

HappyRun F18 2.0 Electric Dirt Bike

  • Distinct PicksNew

    In stock

    $999.00Checked Nov 13
    Visit Distinct Picks
  • Electric Ride Co.New

    In stock

    $1,034.55Free shippingChecked Nov 13
    Visit Electric Ride Co.
  • EZWheel USANew

    Availability unknown

    $1,099.00Checked Nov 13
    Visit EZWheel USA
  • Armstrong Electric VehiclesNew

    Availability unknown

    $1,189.00Checked Nov 13
    Visit Armstrong Electric Vehicles

Also available at

  • Electric Ride Co.Check price at Electric Ride Co.
  • happyrunbikeCheck price at happyrunbike
  • Veltrix77Check price at Veltrix77
All 13 stores and price history →

KAIJIELAISI K801 Electric Dirt Bike

  • KAIJIELAISINew

    In stockReturn policy

    $1,419.00Checked Nov 13
    Visit KAIJIELAISI
Prices and history →

Specs compared

SpecHappyRun F18 2.0 Electric Dirt BikeKAIJIELAISI K801 Electric Dirt Bike
Battery60V 30Ah Lithium Battery—
Peak motor6000W—
Top speed46 MPH—
RangeUp to 60 Miles—
Peak torque245N.m—
Weight125lbs—
Max load capacity300 Lbs—
Dimensions1530*710*910mm—
Brake disc190mm—
Charging time6-8H—
TiresFront 70/100-17; Rear 90/100-14—
Water proof gradeIPX5—
Show all 21 specsShow fewer specs
SpecHappyRun F18 2.0 Electric Dirt BikeKAIJIELAISI K801 Electric Dirt Bike
Peak motor power—6000W
Tire size—26” Fat Tire
Suspension—Full Suspension
Brake type—Dual Hydraulic Brake
Battery capacity—60V 35Ah large-capacity battery
Max off-road speed—72km/h
Tire type—professional knobby off-road tires
Suspension type—Reinforced heavy-duty full suspension
Included accessories—LCD meter, anti-theft lock & air pump

What reviewers say

HappyRun F18 2.0 Electric Dirt Bike

Owners describe the F18 2.0 as fast, powerful and easy to assemble, with a solid build for the money. Complaints center on range that falls short of the claim, a delayed throttle, an uncomfortable seat and vibration at speed.

What people mention
  • PowerPraisedRiders say the 6000W motor pulls hard and climbs steep terrain easily.
  • RangeCriticisedOwners report real-world range well below the claimed 60 miles.
  • ThrottleCriticisedThe throttle feels slightly delayed when you twist it.
  • Seat comfortCriticisedThe seat is described as really uncomfortable, especially on long rides.

Questions and answers

Which is better for trail riding and jumps?
The HappyRun F18 2.0. Its mid-drive motor, 245 N.m of torque and 17/14-inch dirt bike wheels suit jumps and technical trails better than the K801's fat-tire setup.
Which has the longer range?
The KAIJIELAISI K801 on paper, with a 35Ah pack against the HappyRun's 30Ah. HappyRun owners already report real-world range below the claimed 60 miles, so plan charging stops on long rides with either.
Which is faster?
They are close. The HappyRun is rated at 46 mph with selectable 17, 28 and 46 mph power levels; the K801 is rated at 72 km/h, about 45 mph.
Is the K801 worth stepping up to over the F18 2.0?
Step up only if battery size and fat-tire stability matter more than dirt bike handling. The K801 adds capacity and a bigger contact patch but is heavier and less agile.
Which is easier to live with day to day?
The HappyRun, for most riders. It is lighter at 125 lbs, has NFC unlock and a color display, and owners describe easy assembly. The K801 counters with an included LCD meter, anti-theft lock and air pump.
Which holds up better off-road?
Both list full suspension and hydraulic brakes. The K801 states reinforced heavy-duty suspension and dual hydraulic brakes; the HappyRun uses a hydraulic fork, hydraulic plus spring rear shock and a 190mm disc. Neither brand has a long track record, so check the frame and bearings on arrival.

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