Biky vs Guardian: kids bikes compared by size

This page puts each Biky Air model next to the Guardian bike for the same wheel size: price, published weight, brakes, gears and rider height, as published on guardianbikes.com on November 1, 2026. The notes at the end say where every number comes from. Prices and specifications change; the product pages are the live source.

The two brands make different bikes. Guardian builds steel frames on its pedal bikes with its SureStop single-lever brake system and sells at lower prices. Biky builds aluminum frames with two Tektro hand brakes on short-reach levers and lower weight: by the published figures a Biky Air weighs 1.3 to 6.5 lb less than the Guardian of the same size.

12 inch balance bike: Biky Air 12 vs Guardian Balance Bike

The Guardian Balance Bike costs $159 against $229 for the Biky Air 12. Both have an aluminum frame and a hand brake. By the published figures the Air 12 is 7.2 lb and the Guardian is 8.5 lb. The Air 12 fits riders 31 to 41 in tall, the Guardian 33 to 40 in.

14 inch: Biky Air 14 vs Guardian 14

The Guardian 14 costs $249 against $399 for the Biky Air 14. By the published figures the Air 14 is 12.0 lb with pedals and the Guardian 14 is 16 lb, 4 lb more, on a steel frame. The Air 14 has two hand brakes and a full Hebie Chainglider cover; the Guardian uses one lever that works both wheels. Neither has a coaster brake.

16 inch: Biky Air 16 vs Guardian 16

The Guardian 16 costs $259 against $399 for the Biky Air 16. By the published figures the Air 16 is 12.7 lb with pedals and the Guardian 16 is 17.5 lb, nearly 5 lb more. The Air 16 has two hand brakes and a full chain cover; the Guardian uses the SureStop single lever. Neither has a coaster brake.

20 inch single speed: Biky Air 20 vs Guardian 20 Small

The Guardian 20 Small costs $299 against $499 for the Biky Air 20. Both are single speed. By the published figures the Air 20 is 14.2 lb with pedals and the Guardian 20 Small is 20.7 lb, 6.5 lb more. Two Wheeling Tots calls the Air 20 "the lightest single-speed 20 inch bike in our entire test group".

20 inch with gears: Biky Air 20 S7 vs Guardian 20 Large

The Guardian 20 Large costs $329 against $589 for the Biky Air 20 S7. The Biky has 7 gears, the Guardian 6; both use a twist shifter, the Biky with a gear indicator. By the published figures the Air 20 S7 is 16.7 lb with pedals and the Guardian 20 Large is 22.9 lb, 6.2 lb more.

24 inch: Biky Air 24 S7 vs Guardian 24

The Guardian 24 costs $349 against $699 for the Biky Air 24 S7. Both have 7 gears. By the published figures the Air 24 S7 is 19.0 lb with pedals and the Guardian 24 is 25.5 lb with kickstand and reflectors, 6.5 lb more, on a steel frame. Two Wheeling Tots calls the Air 24 S7 "Lightest 24 inch bike on the market" (2026).

Service

What the table cannot show is service. Biky is a small team in Southern California. On weekdays between 9 am and 5 pm Pacific time we answer email and text messages within an hour; evenings, weekends and holidays within 24 hours. Closed on Thanksgiving Day and Christmas Day. About one in five reviews on this site mentions our replies or support. "Even on a Sunday afternoon (outside of the posted business hours), I received a reply on the same day." Ari, May 2026, via Judge.me. A selected review; all 221 reviews, word for word, including 4-star and 3-star ones, are at bikybikes.com/pages/reviews.

Common questions

Is Biky lighter than Guardian?

By the makers' published figures on November 1, 2026, every Biky Air weighs less than the Guardian of the same wheel size: 1.3 lb less on 12 inches, 4 lb on 14, nearly 5 lb on 16, 6.5 lb on 20 single speed, 6.2 lb on 20 with gears and 6.5 lb on 24. Biky frames are aluminum; Guardian pedal bikes have steel frames, its balance bike is aluminum.

Why does a Guardian cost less than a Biky?

By the prices charged on guardianbikes.com on November 1, 2026, a Guardian is priced $70 to $350 below the Biky Air of the same size. The two are built differently: Guardian uses steel frames on its pedal bikes and one SureStop lever for both brakes; Biky uses 6061-T6 aluminum frames, two Tektro hand brakes on short-reach levers and sealed bearings, and weighs 1.3 to 6.5 lb less by the published figures. That is where the price difference sits.

What is the difference between SureStop and two hand brakes?

Guardian's SureStop is one lever that applies both brakes in sequence. A Biky Air pedal bike has two Tektro hand brakes on two short-reach levers, front and rear, so a child learns to brake the way adult bikes work. Neither brand uses a coaster brake on these models.

Biky prices are the current prices on bikybikes.com, held through December 31, 2026; the price in parentheses is our list price before October 15, 2026. Guardian prices are the prices charged on guardianbikes.com; the site shows a higher Comp Value next to each price, its own reference figure, not used here. ** As published by the manufacturer; Guardian figures include the kickstand and reflectors. Guardian figures were taken from guardianbikes.com on November 1, 2026. Weights are as published; where the weighing method is not stated, we say so. Biky weights were measured by Biky on a hanging scale on September 30, 2026, tires inflated, without kickstand, with and without pedals (pedals weigh 0.4 lb). Prices are in U.S. dollars without shipping and tax and can change on a given day. We check these figures weekly; last check November 2, 2026. Guardian is a trademark of its owner. Biky is not affiliated with Guardian. Review statistic: 42 of the 221 reviews in the Judge.me export of September 30, 2026 mention our replies or support; reviews are quoted word for word with the author's name as published on this site.

Other comparisons: Biky vs woom · Biky vs Prevelo. Bikes by age: 2 years, 3 years, 4 years, 5 years, 6 and 7 years, 8 to 10 years.

By the Biky Bikes team. Updated November 1, 2026.