NIU BQi Fat Tire 300 Step-Over Electric Bike
- Class 2
- 601-800 Wh
- 41-60 mi claimed
- 301-350 lb max load
SVT Score, Lower
A Class 2 fat-tire e-bike with a 768 Wh battery, hydraulic brakes, a torque sensor and a fitted rack, at a heavy 79 lb.
$809
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Usability
5.5 out of 10- Power: 750 W nominal, 1,000 W peak, not scored (torque published)
- Gears: Shimano Altus 8-speed chain drive
- Battery: removal not stated by NIU, not counted
- Searched: UL Web (UL Solutions certificate) Certipedia Intertek SGS TÜV SÜD CPSC Health Canada
Better on verificationGotrax Tundra fat tire e-bike$1,299Scores 6.0Strengths
- Hydraulic brakes with big rotors
- Fat tires grip on sand and gravel
- Rack and fenders come fitted
- Eight gears for climbing
- Torque sensor gives natural assist
Drawbacks
- Heavy to lift or carry
- No turn signals
- Battery removal not documented
- Few owner reviews so far
- Short fork travel for rough trails
A well-equipped fat-tire cruiser for mixed terrain, but heavy and little tested
Specs
- TypeFat Tire
- E-Bike ClassClass 2
- Battery601-800 Wh
- MotorHub
- Top Speed21-28 mph
- Claimed Range41-60 mi
- Weight71-85 lb
- Max Rider Load301-350 lb
- BrakesHydraulic disc
- SuspensionFront
- FoldingDoes not fold
- CertificationsClaimed only
- Warranty2 Years
Not checked: Whether the battery lifts out, which NIU does not state
At a glance
- Shimano Altus 8-speed
- Halo headlight
- USB port under display
The store's terms name NIU Technology Inc. of San Jose, California, as a joint operator with NIU International Co., Ltd. The brand belongs to Niu Technologies, a Nasdaq-listed maker of electric two-wheelers based in Beijing.
- NIU sells its kick scooters and e-bikes in the US through its own store, shop.niu.com, and some of its scooters through Best Buy.
- NIU also sells through its own Amazon store, under the seller names NIU Tech. and NIU Global.
- Best Buy sells NIU's KQi 300P, KQi 300X, KQi 200P and BQi-C3 Pro as the seller, Home Depot lists the KQi 100P and KQi Air, and Walmart and Target carry NIU only through marketplace sellers (October 2026).
The NIU BQi Fat Tire 300 is a step-over fat-tire e-bike with a 48 V, 16 Ah battery of 768 Wh and a 750 W rear hub motor (1,000 W peak, 85 Nm) with a torque sensor.
It has hydraulic disc brakes with 180 mm rotors front and rear, a lockable 80 mm suspension fork, 26 x 4.0 in puncture-resistant tires with a Kevlar layer and a Shimano Altus 8-speed chain drive. It weighs 79 lb with the battery and carries a 308 lb total payload, including up to 66 lb on its rear rack.
NIU prints Class 2 and Class 3 with switching: 20 mph on the thumb throttle and 28 mph on pedal assist. The maker claims up to 50 miles of range at an average 9 mph with a 165 lb rider.
It has a halo headlight, an integrated tail and brake light, full aluminum fenders, a mechanical bell and an app-connected 3.5 in color TFT display; the bike is rated IP45 and the battery IP67. Both frames fit riders 5 ft 8 in to 6 ft 1 in.
The black and green step-overs are listed at $809.00 each; the grey step-over and the white and yellow step-through versions are sold out.
Questions answered from our data
Is NIU good?We list seven NIU products and score seven of them. Their overall scores run from 4.5 to 6.5, with a median of 5.7, against a median of 5.6 for all 130 products we score.
How much does an electric bike cost?The 87 electric bikes we list run from $799 to $12,500, with a median of $1,700.
Are electric bikes UL certified?31 of the 87 electric bikes we list carry a UL 2849 listing we could look up by model.
How far can an electric bike go?75 of the 87 electric bikes we list claim 41 miles or more on a charge, each on its maker's own basis.
