King Song Electric Unicycle Lineup (2026): Every US Model Compared

The King Song line-up at a glance

King Song electric unicycles on kingsong.com (US store), October 9, 2026

Model	Pack	Motor (rated / peak)	Top speed (King Song)	Tire	Suspension	Weight	Price band
14D Pro	60V, 420 Wh	800 W / 2,400 W	18.6 mph	14 in	None	32 lb	$730 to $1,000
16S Pro	840 Wh (67.2V charger)	1,200 W / 3,800 W	22 mph	16 x 2.125 in	None	38.4 lb	$1,150 to $1,600
16X Pro	84V charging, 1,554 Wh	2,200 W / 4,600 W	33 mph	16 x 3 in	None	54 lb	$1,730 to $2,300
18XL Pro	72V, 1,554 Wh	2,200 W / 4,600 W	37 mph after unlock	18 x 2.5 in	None	56 lb	$1,610 to $2,200
S18 Pro+	1,110 Wh	2,200 W / 5,000 W	28 mph	18 x 3.0 in	100 mm	55 lb	$1,730 to $2,300
S19 Pro	1,776 Wh	3,500 W / 6,500 W	37 mph	20 x 2.75 (spec table)	90 mm	73 lb	$2,030 to $2,700
F18	151.2V, 2,664 Wh	5,000 W / 11,000 W	67 mph	20 in (2.75-14)	100 mm	90 lb	$3,100 to $3,500
F16 (pre-order)	126V, 2,220 Wh	3,500 W / 10,000 W	80 km/h (49.7 mph)	16 x 3.0 in (3.0-12)	80 mm	83.1 lb	$2,600 to $2,900

Price bands run from King Song's sale price to its listed regular price on October 9, 2026. The S19 Pro's FAQ quotes a $2,099 listed price against the $2,029 shown on the buy button, so check the cart. Five more models were listed as sold out that day: the S22 Pro+ (126V, 2,220 Wh, 4,000 W rated, 130 mm of travel, 77 lb), the F22 Pro (176.4V, 3,108 Wh, 5,500 W rated, 106 lb), the 18XL, the S16 Pro and the S9.

The top speeds are King Song's own figures and depend, by its own wording, on battery level, rider weight, firmware settings and conditions. The wheel's tiltback (the pedals pushing back to slow you) is set below the motor's limit; our guide to tiltback and cutouts explains why riding near the stated maximum is a bad idea.

How to read King Song's numbers

Voltage is quoted three different ways

The 18XL Pro page lists 72V, the 16X Pro page an 84V charging system, and the 16S Pro page only a 67.2V charger output, while the S18 Pro+ and S19 Pro pages give no voltage at all. The 18XL Pro and 16X Pro carry the same 1,554 Wh capacity; 72V is close to the nominal voltage of a 20-cell series pack (20 x 3.6V) and 84V is its full-charge voltage (20 x 4.2V). The F18 page states both: 133.2V nominal and 151.2V at full charge. Our voltage explainer covers why the higher-voltage F-series wheels have more power headroom.

Range claims, and King Song's own reality check

Most pages give an "up to" range under "ideal conditions" only. The 16S Pro page is the exception: against its 45-mile spec figure, its FAQ gives example ranges of about 36 miles for a 150 lb rider on flat city streets at 15 to 20 mph, 31 miles for a 180 lb rider with hills, and 26.7 miles for a 220 lb rider commuting in the city. Expect the same kind of gap on the other models.

Certification

The 14D Pro, 16S Pro, 16X Pro and 18XL Pro pages name UL 2272, the standard for the electrical systems of personal e-mobility devices. The S19 Pro, S22 Pro+ and F22 Pro pages say "UL Certified" without naming the standard, the S18 Pro+ page mentions FCC certification only, and the F18 and F16 pages list no certification. If certification matters to you, ask King Song for the certificate before buying. Our UL 2272 guide explains what it covers.

Conflicts we found on the pages

• 16X Pro: 33 mph in the spec table, "up to 37 mph" elsewhere; a 1-year warranty in the spec section, "up to 2 years" in the banner.
• 18XL Pro: the page title says 78 miles and 33 mph, the specs say 87 miles and 37 mph; torque appears as both 140 and 210 N·m.
• S18 Pro+: 28 mph and 55 miles in the table, 50 km/h (31 mph) and 110 km (68 miles) in the description.
• S19 Pro: a 20 x 2.75 tire in the table, 18 x 3.0 inches in the highlights.
• 14D Pro, 16S Pro and 16X Pro: Apple Find My is ticked in the spec tables, but each FAQ says current inventory does not include it.

Which King Song fits which rider

First wheel: 14D Pro

The 14D Pro pairs a 60V, 420 Wh pack with an 800 W rated motor, a 14-inch tire, an IPX5 rating and a 265 lb maximum load, at 32 lb. It reaches 18.6 mph, charges in about 3.5 hours and is rated for up to 25 miles under ideal conditions. Skip it if your round trip is close to that 25 miles; the 16S Pro doubles the pack to 840 Wh for 6.4 lb more.

Middle ground: 16S Pro

The 16S Pro has a 1,200 W rated motor, an IP54 rating, a 16 x 2.125 inch tire and a 22 mph top speed, at 38.4 lb. It charges in about 7 hours on the included 2 A charger or about 3 hours on a compatible 5 A charger. King Song limits new wheels until 10 km (6.2 miles) has been ridden and the app is used to adjust settings.

Long-range commuters: 16X Pro or 18XL Pro

Both carry 1,554 Wh and a 2,200 W rated, 4,600 W peak motor, with no suspension. The 16X Pro rides a wider 16 x 3 inch tire at 54 lb; the 18XL Pro rides an 18 x 2.5 inch tire at 56 lb and lists IP54, where the 16X Pro page leaves the rating blank. Charging is slow on both with the stock chargers: 8.4 hours on the 16X Pro's 2.5 A charger, and 14 hours on the 18XL Pro. Pick on tire size and the water rating rather than on power, which is identical.

Suspension: S18 Pro+ or S19 Pro

The S18 Pro+ gives 100 mm of travel, a 1,110 Wh pack and an 18 x 3.0 inch tire at 55 lb. The S19 Pro adds a larger 1,776 Wh pack, a 3,500 W rated motor and an adjustable DNM damper with 90 mm of travel, but weighs 73 lb and lists IPX5. Choose the S18 Pro+ if you lift the wheel often; choose the S19 Pro if range matters more than weight.

High voltage: F18 and F16

The F18 is King Song's in-stock flagship: a 151.2V, 2,664 Wh pack made of 144 Samsung 50S cells in four separate packs, a 5,000 W rated motor, four-point DNM suspension with 100 mm of travel, IPX6, a 309 lb maximum load and 90 lb of weight. Its included 10 A charger fills it in about 2 to 3 hours. The F16 is a smaller 16-inch version on pre-order for US buyers, quoted to ship on or before November 15, 2026 in one section of its page and in late November to early December in another.

Buying King Song on Amazon

King Song runs its own Amazon store. The 14D Pro, 16S Pro, 18XL Pro, S18 Pro+, S19 Pro and F18 listings we checked on October 9, 2026 were sold by "KINGSONG Official Store" (per the Amazon listings), at prices within $130 of King Song's own store. One 16X Pro listing was sold by "TOPFEEL Official Store" under the TOPFEEL brand (per the Amazon listing), so check the seller line before you buy. King Song's warranty policy says that for Amazon, dealer and marketplace purchases, the seller's warranty terms may apply and the seller may be your first contact. Our where to buy guide compares the channels.

Warranty, returns and shipping from King Song US

King Song warranty periods by part

Part	Coverage
Motor	1 to 2 years, by model
Battery pack	1 year (normal capacity loss excluded)
Controller and mainboard	1 year
Charger	1 year
Frame, display, suspension, lights	1 year each
Outer shell	Limited; manufacturing defects reviewed case by case
Tires, tubes, brake pads, bearings, foot pads	Consumables

King Song's headline "up to 2 years" depends on the model, the part, the purchase region and the sales channel, and the product page or order confirmation sets the exact term. If a confirmed defect is reported within 30 days of receipt, King Song pays shipping both ways; after that, you pay to send the wheel in and King Song pays the return. Crashes, water exposure, unofficial firmware, unauthorized repairs, racing, jumping and off-road use that accelerates wear are excluded.

Returns apply only to purchases from kingsong.com and need an RMA. Within 14 days, an unopened, unused wheel can go back if you pay return shipping plus a fixed $250 fee ($350 for heavy or oversized units). From 14 to 30 days, the wheel must be pristine with under 5 miles on it, and a 20% restocking fee is added. Nothing is returnable after 30 days. Orders process in 1 to 2 business days and spend 3 to 7 business days in transit; King Song does not ship to Alaska, Hawaii, Puerto Rico, PO boxes or military addresses, and a signature is required.

Who should skip King Song

If you ride in heavy rain, note that the most common ratings here are IP54 and IPX5, King Song's pages say the wheels are not waterproof, and water damage is excluded from the warranty. If you expect to change your mind after a few rides, the 14 to 30 day return terms cost 20% plus fees. And if you want published voltage and certification for every model, InMotion's pages are more consistent; see our four-brand comparison and the warranty comparison.