NIU / Last-mile
NIU KQi Air X
No citable customer rating — see how we compare.
18 mi estimated · 31 mi claimed
The claim is 1.7× the estimate. How this is worked out.
A carbon-fibre version of the KQi Air for $200 more. NIU gives the Air X a 25.8 lb weight, 0.4 lb under the Air, with the same 451 Wh pack, 350 W motor, 20 mph speed and 31-mile claim, plus a 7.5-inch deck. NIU's store lists it at $1,049 against a $1,899 list price. The frame is a PYROFIL carbon-fibre composite, which is where the weight goes, and the rider limit stays at 265 lb. Everything else is the Air's: tubeless 9.5-inch tires, a front disc with regeneration, no suspension, an IP55 rating and cruise control in the NIU app. The $200 buys 0.4 lb and a carbon frame, so it is a purchase for someone who carries the scooter every day and wants the lowest weight NIU sells, not for a rider who is after more speed or range.
- Price
- ~$1,049
- Estimated range
- 18 mi
- Claimed
- 31 mi
- Top speed
- 20 mph
- Weight
- 25.8 lb
- Carry
- Carry up stairs
Price and stock on NIU’s site may differ from ours.
Best for: A rider who carries the scooter on and off transit daily
Specifications
- Estimated range
- 18 mi
- Claimed range
- 31 mi (1.7x the estimate)
- Top speed
- 20 mph
- Motor
- Single motor, 350 W (700 W peak)
- Battery
- 451 Wh at 48 V
- Wh per dollar
- 0.43 Wh/$
- Wh per pound
- 17 Wh/lb
- Weight
- 25.8 lb — carry up stairs
- Max rider weight
- 265 lb
- Rated grade
- 20%
- Tires
- 9.5" tubeless
- Suspension
- None
- Brakes
- Front disc with regenerative rear
- IP rating
- IP55
- Charge time
- 5 h
- Folded size
- Folds
- Deck width
- 7.5 in
- Lights
- Turn signals, taillight, ambient lighting
- App
- Yes
- Cruise control
- Yes
- Approx. price
- ~$1,049
Under 35 lb — a normal person gets this up a flight without planning it. Estimated range is our own calculation from the battery capacity; the claim is the manufacturer’s.
Features
- Carbon-fibre composite frame
- 25.8 lb with a 265 lb rider limit
- 451 Wh pack, 31-mile claim
- Front disc with regenerative rear brake
- IP55 water and dust rating
- 7.5-inch deck
- NIU app with smart unlock and NFC
In its favour
- 25.8 lb with a 451 Wh pack
- 265 lb rider limit despite the weight
- IP55 adds a dust rating to the IPX5 found on most NIUs
- Front disc brake with regeneration
- 7.5-inch deck is wider than the 5.1-6.8 inch decks on NIU's KQi 100 to 300 models
Against it
- $1,049 is $200 above the KQi Air for 0.4 lb less
- No suspension, so a 9.5-inch wheel carries all the vibration
- 20 mph and 350 W nominal, no more than the Air
- $2.33 per watt-hour against the Air's $1.88
- Store shows $1,899 as the crossed-out price, which is not what it sells for
The lists above are read off the specification sheet, not off owner reports.
What owners say
No owner discussion has been collected for the NIU KQi Air X yet. The pros and cons above are read off the specification, not off anyone’s experience of riding one — we do not write owner sentiment for a scooter whose owners we have not read.
Head to head
Also worth a look
NIU
NIU KQi Air
18 mi est · 26.2 lb · ~$849
NIU
NIU KQi 300P
19.4 mi est · 46 lb · ~$699
NIU
NIU KQi 300X
24.3 mi est · 48.7 lb · ~$799