How Do the SUPER73, Ridstar Q20 and Tuttio Soleil01 Compare With the Federal E-Bike Definition?

Manufacturer, retailer and public-agency sources · 2026-09-24 · no ratings, no road tests

Summary

Their makers' own descriptions place them in different categories. SUPER73 sells its bikes in Class 2 mode at 20 mph, and Macfox lists every model at 20 mph with pedals and a thumb throttle. Tuttio calls the Soleil01 an electric dirt bike "designed for off-road use only," Stark sells the VARG as an electric motorcycle, and Ridstar lists the Q20 at 33 mph. CPSC has told owners of Ridstar Q20, Q20 Pro and Q20 Lite bikes to stop using them.

The federal definition these products are measured against

Federal consumer-product law defines a "low-speed electric bicycle" in 15 U.S.C. 2085 as "a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph."

Three conditions, then: working pedals, a motor under 750 watts, and a motor-only speed under 20 mph. Most of the product pages below quote peak watts, which the definition does not use, and several give a top speed without saying whether the rider was pedaling.

What each maker publishes

Product	How the maker describes it	Top speed on the page	Power on the page
SUPER73 R Adventure Series SE	Sold in Class 2 mode, for riders 16 and older	20 mph	750W nominal
SUPER73 S2 Laguna	"Class 2 20MPH"	20 mph	500W nominal
Macfox X1S, X7/X7L, M16	Thumb throttle, "can also be pedaled"	20 mph	750W peak
Macfox X2 Pro	"Built for mixed terrain and light off-road riding"	20 mph	1000W peak
Ridstar Q20 Lite	"Electric Bike For Adults"	25 mph	1000W
Ridstar Q20	E-bike with a "Pure electric bike mode"	33 mph (30 mph elsewhere on the page)	1500W peak
Ridstar Q20 Pro	Front and rear motors	34 mph (35 mph in the comparison table)	2 x 1000W, 2000W total
Tuttio Soleil01	"Electric Mini Bike" and "Electric Dirt Bike," off-road use only	15, 22 or up to 40 mph	3000W peak (2000W in the page description)
Stark VARG	Electric motorcycle for motocross, enduro and supermoto	Not given	Up to 80 hp

SUPER73's Class 2 footnote

SUPER73's product pages carry the same footnote: "customers who download and pair the SUPER73 app after January 1, 2025, will not have the ability to access modes other than the Class 2 mode in which the product is sold." The R Adventure Series SE claims "45+ miles of range at 20mph under Class-2 throttle-only operation" and is listed "for riders 16 years of age and older." On paper, a bike sold this way is a throttle e-bike limited to 20 mph.

Ridstar's Q20 series and the two CPSC warnings

On March 19, 2026, CPSC warned consumers to stop using Ridstar Q20 and Q20 Pro e-bikes because "the e-bikes' batteries and wires can ignite." The agency listed 11 reports of fire, one burn injury, five reports of smoke inhalation and two reports of property damage totaling over $40,000. It said the manufacturer, Huizhou Xingqishi Sporting Goods Co., Ltd., of China, "has refused to agree to an acceptable recall," and told owners to remove the battery and dispose of it under local hazardous waste procedures.

The second warning, on June 25, 2026, covers the Q20 and Q20 Lite: "The front wheel can detach without warning." CPSC cited 32 reports of the front wheel detaching, including 31 reports of injuries such as concussions and broken bones, and said the manufacturer had been "unresponsive" to requests for a recall. Here the instruction is to stop using the e-bikes and dispose of them.

Both warnings name Amazon.com, Ridstar.net and Walmart.com as sellers, and the June warning adds AliExpress.us. Ridstar's own store says bikes may ship under the YVY brand and that "YVY and Ridstar bikes are identical in every way, except for the logo." The same store's FAQ states that "All Ridstar ebikes are street legal for family use."

Products sold for off-road use or as motorcycles

Tuttio is explicit: "Tuttio ebikes are designed for off-road use only. Be sure to check local laws before riding." The Soleil01's box list includes two foot pegs and no pedals, and Tuttio says 40 mph "is not the default setting" and comes only "after professional adjustment and proper setup." The page says it is "Certified by SGS to UL 2272 and UL 2271 Standards," while the page description claims UL 2849.

ENGWE's Eagle sits in the same group as a "3200W Peak Output 45MPH Max Speed Electric Dirt Bike For Teens & Adult."

Stark Future does not call the VARG a bicycle of any kind. Its site sells "electric motorcycles." The VARG EX is described as "Race performance, street legal," the VARG SM as a supermoto that is "A1 license compliant," and the VARG MX 1.2 as "the fastest electric motocross bike in the world," with up to 80 hp and a 7.2 kWh battery.

Sources

Data checked, sources, and what we did not test

Data checked: 2026-09-24. Figures and quotations were read on that date from the pages listed under Sources and can change without notice.

Sources: manufacturer, retailer and public-agency pages, listed above. No review sites, forums or retailer ratings were used.

What we did not test: ride quality, brake feel, real-world range, durability and customer service. We have not ridden these bikes and publish no ratings or rankings.