First bike

Any two kids’ bikes, side by side

Gas or electric, any make: pick two of the 51 smaller bikes in the Garage and their stock figures line up, each with its source. A mark says only whether the two printed values are the same; nothing here says which bike is better.

Pick two

This page needs JavaScript to line the bikes up. Every pair of the same size class is also on its own comparison page, and youth bikes by seat height lists them all.

First bike

Second bike

Only list bikes near an inseam

Rider’s inseam

Unit

Lists only bikes whose lowest printed seat height is within 100 mm (3.9 in) of the inseam, above or below. It narrows the list; it says nothing about fit, which needs a sit-on test.

Sources: “Owner’s manual p. n” is read off that page; “research” is the maker’s spec sheet or web page. “Does not apply” is a row the bike can never have, like engine oil on an electric motor. Each bike’s page lists every source with its date.