★★★★★
Bree McGregor
Awesome bike!
Quality materials, easy to assemble, and incredible lightweight. Did a ton of research before choosing this bike for our hesitant rider and it was the right choice. She hopped on and peddled away!
Biky Air 24 S7 (7 Speed)
Age: 7-11 years
Height: 49-58 inches
Weight: 18.6 lbs (8.4 kg)
Olive Pop
Sunbeam
Splash Blue
Candy Cane
Limited Edition
Regular price
$699
Sale price
$699
Regular price
$779
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Biky Air 24 S7 is a lightweight 24-inch 7-speed kids bike (18.6 lb without pedals, 19.0 lb with pedals) for children of 7 to 11 years; Two Wheeling Tots call the Biky Air 24 S7 the lightest 24-inch bike on the market in their 2026 guide. Its role in the Biky line: the bike for riding alone, to school and to friends, with the hills on the way, and the bike to learn on late. When the child is out of sight nobody lifts the bike after a fall or carries it home, so the weight of the Biky Air 24 S7 is the condition for riding alone. For a child of 8 to 11 who has not learned to ride yet, often after a bad start on a heavy bike, the Biky Air 24 S7 is the bike to learn on: at this weight, with two hand brakes and a low step-through, the child learns quickly even without balance bike experience. Seven gears with an indicator and a 12-28T cassette take the hills on the way to school, and the seat rises 8.5 in, so one Biky Air 24 S7 covers the growing map of the neighborhood.
The Biky Air 24 S7 weighs 18.6 lb (8.4 kg) without pedals, 19.0 lb with pedals. Two Wheeling Tots called it the lightest 24-inch neighborhood bike on their list. A 7-speed drivetrain with a grip shifter and gear indicator and a wide gear range for hills and longer rides. Front and rear Tektro hand brakes with short-reach alloy levers, freewheel with no coaster brake. Aluminum frame with a low step-through, quick-release front wheel that fits in the car, solid front chainring, internal cable routing. For riders aged 7 to 11, 49 to 58 inches tall, with a 23.5 to 29.5 inch inseam. 90-day returns and complimentary shipping in the US.
See the Biky guide for a 6 or 7 year old or a 8, 9 or 10 year old, and the kids bike gift guide.
- Aluminum Frame: Light frame, easy for a child to push and lift.
- Low Step-Through Frame: Easy to get on and off.
- Long Wheelbase: Stable, doesn't wobble.
- Low Bottom Bracket: Low center of gravity, more stable.
- Slim Rear Triangle: Feet clear the frame when pedaling.
- Ergonomic Saddle: Comfortable for longer rides.
- Narrow Q-Factor: Pedals closer together, more natural pedaling.
- Kid-Sized Crank Arms: Crank arms sized to the child, easier to pedal.
- Upright Handlebars: Upright position, straight back.
- Adjustable Handlebars: Bar height adjusts to the child.
- Kid-Sized Grips: Easy for small hands to hold.
- Quick-Release Seatpost Clamp: Adjust seat height without tools.
- Air-Filled Tires: Roll smoothly around town and the park.
- Reflective Sidewall Tires: Visible from the side in car headlights.
- Quick-Release Front Wheel: Comes off without tools, fits in the car.
- Schrader Valve Tubes: Schrader valve, pumps up with any pump.
- Freewheel (No Coaster Brake): No coaster brake, easier to start and stop.
- 7-Speed Drivetrain: 7 gears, easy uphill.
- Grip Shifter with Gear Indicator: Indicator shows the selected gear.
- Wide Gear Range: Enough range for hills and flats.
- No Training Wheels: Learns to balance right away.
- Dual Hand Brakes: Separate front and rear brakes.
- Short-Reach Brake Levers: Levers close to the bar, easy to pull.
- Alloy Brake Levers: Alloy levers, short reach.
- Solid Front Chainring: No holes in the chainring, no pinched fingers.
- Internal Cable Routing: Cables inside the frame, nothing to catch on.
- Covered Axle Bolts: Bolts don't stick out, nothing snags.
- Sealed Bearings: Sealed bearings in headset, bottom bracket and hubs, less maintenance.
- Brand-Name Components: Tektro, CST, KMC, ProWheel, MicroShift.
- Quality Lightweight Components: Made specifically for kids, not shrunk-down adult parts.
Bike Size: 24 inches
Weight: 18.6 lbs (8.4 kg)
Ideal Child Height: 49-58 inches
Inseam: 23.5-29.5 inches
Weight: 18.6 lbs (8.4 kg)
Ideal Child Height: 49-58 inches
Inseam: 23.5-29.5 inches
Return your bike within 90 days of delivery for a full refund. Email info@bikybikes.com first for the return address. Return shipping is on us: we email you a prepaid label.
The Biky Air 24 S7 weighs 18.6 lb (8.4 kg) without pedals and fits riders 49 to 58 inches tall, for 7, 8, 9, 10 and 11 year olds (ages 7 to 11) with a 23.5 to 29.5 inch inseam. This is a 24 inch kids bike with seven gears and a quick-release front wheel that comes off for the car, for riding farther from home.
Awards: Two Wheeling Tots, Best 24 Inch Kids Bikes 2026.
Two Wheeling Tots, Best 24 Inch Kids Bikes, 2026: "Lightest 24 inch bike on the market". twowheelingtots.com
Reviews and awards for the whole Air line, from Two Wheeling Tots, Wirecutter, Good Housekeeping, Bikerumor, Rascal Rides, The Bike Dads and Adventure Travel Family. bikybikes.com
Compared with the woom EXPLORE 5 and the Prevelo Alpha Four by the makers' published figures on November 1, 2026: without pedals the Air 24 S7 weighs 18.6 lb against 19.2 lb for the Prevelo Alpha Four, also without pedals, and 20.8 lb for the woom EXPLORE 5, weighing method not stated; the Air 24 S7 costs $699 against $819 for the woom and $799 for the Prevelo at their regular prices. Size by size tables with sources are on the comparison pages. woom and Prevelo are trademarks of their owners; Biky is not affiliated with them. bikybikes.com
Why families trust Biky. Biky Inc., Southern California, founded in 2023; the first Biky Air bikes reached families in February 2024. More than 2,700 Biky Air bikes sold to about 2,300 families in all 50 states. Lifetime warranty on frame and fork, 90 days to return with return shipping on us. Real people answer texts and emails: within an hour on weekdays between 9 am and 5 pm Pacific time, within 24 hours evenings, weekends and holidays; closed on Thanksgiving Day and Christmas Day. About Biky. All customer reviews, word for word, including 4-star and 3-star ones: bikybikes.com/pages/reviews. Numbers as of November 1, 2026.
From Frame to Finish, Built for Kids
The Biky Air 24 S7 is designed for older and more experienced children, providing a smooth transition to more challenging terrain, hills, and longer adventures — now with 7-speed gearing.
Lightweight Frame
Easy Seat Adjust
Reliable Brakes
Durable Wheels
Common questions
Yes: the Biky Air 24 S7 fits 7, 8, 9, 10 and 11 year olds who are 49 to 58 inches tall with a 23.5 to 29.5 inch inseam. The seat adjusts from 26 to 34.5 inches, so the bike has several seasons in it. A child under 49 inches does better on the Biky Air 20 or the Biky Air 20 S7, which fit 43 to 51 inches. Measure the inseam first with the Biky Finder.
The Biky Air 24 S7 has two Tektro hand brakes, front and rear, and the lever needs 1.1 kgf (10.8 N) to engage the pads and 1.2 kgf (11.8 N) at full squeeze. Biky measured that with a hanging scale at the lever tip, October 2026, one bike each. The levers are short-reach alloy, sized for small hands. Reviews that mention a single rear brake describe an earlier build. There is no coaster brake, so the wheel freewheels and the child stops with the hands.
The Biky Air 24 S7 fits a 23.5 to 29.5 inch inseam, and the seat adjusts from 26 to 34.5 inches with a quick-release clamp, no tools. Measure the inseam: the child stands against a wall without shoes, you put a book between the legs, and you measure from the floor to the top of the book. Start with the seat low enough that both feet sit flat on the ground. If the child falls between two models, the smaller wheel is easier to handle and the larger one gives room to grow.
The Biky Air 24 S7 arrives partly assembled, and an adult needs about 5 minutes: mount the handlebar (4 mm hex, 6 Nm), attach the front wheel, install the pedals and clip on the reflectors. The box holds the pedals marked R and L, a white front reflector, a red rear reflector and the 4 and 6 mm hex keys you need. A kickstand is added on request, as a gift: write to info@bikybikes.com when you order or after delivery and we send one at no charge. Lights are not included, though the rims and the tire sidewalls are reflective. You pick the color at checkout: Candy Cane, Splash Blue, Sunbeam, Olive Pop or the Limited Edition, five colors in all.
Orders for the Biky Air 24 S7 ship the same or the next business day and usually arrive in 3 to 5 business days, with complimentary standard ground shipping to the 48 contiguous states. 2-Day and Overnight are available at checkout at the carrier's rate, and shipping to Alaska, Hawaii and Puerto Rico is $49 per order. You have 90 days from delivery to return the bike: email info@bikybikes.com first for the return address, and the refund goes back to the original payment method within 3 to 5 business days of the return arriving. Return shipping is on us: we email you a prepaid label.
The Biky Air 24 S7 has 24 inch wheels for riders 49 to 58 inches tall, against 20 inch wheels for 43 to 51 inches on the Biky Air 20 S7. Both have seven gears, a grip shifter with a gear indicator and a quick-release front wheel. The Air 24 S7 weighs 18.6 lb (8.4 kg) without pedals against 16.3 lb (7.3 kg), and it costs $699 against $589. If your child measures between the two, the 20 inch is easier to handle and the 24 inch gives room to grow.
Partly, the Biky Air 24 S7 is a 7-speed bike with a rear derailleur, so the chain runs open like on other geared bikes. The front chainring is solid, with no cut-outs that could pinch a finger, and the cables run inside the frame. For a fully enclosed chain choose the single speed Biky Air 20, which has a Hebie Chainglider around the whole chain.
No. The Biky Air 24 S7 ships with a freewheel and two Tektro hand brakes, front and rear, with short-reach alloy levers that need 1.1 kgf (10.8 N) to engage. The child brakes with the hands from the first ride and can pedal backward to reset the pedals, and there is nothing to remove or convert later.
Customer Reviews
5.0 out of 5
Based on 2 reviews
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★★★★★
Russ MVerified
Great Kids Bike
I bought this bike for my son’s 9 year birthday. This was a perfect size for him that will last several years. It seems very well built with quality parts. Just a small amount of assembly that was easy to complete. My sons loves it and rides it almost every day!
Reviews of the Biky Air 24 S7 collected through Judge.me after purchase, shown word for word, including the 4-star and 3-star ones. Updated November 10, 2026. Reviews of every model: bikybikes.com/pages/reviews.
Specifications
| Wheel size | 24 in |
|---|---|
| Rider age | 7, 8, 9, 10 and 11 years (ages 7 to 11) |
| Rider height | 49-58 in |
| Rider inseam | 23.5-29.5 in |
| Seat height | 26-34.5 in |
| Weight without pedals | 18.6 lb (8.4 kg) |
| Weight with pedals | 19.0 lb (8.6 kg); the pedals weigh 0.4 lb |
| Frame | 6061-T6 aluminum, low step-through, internal cable routing |
| Brakes | front and rear Tektro C310 (110 mm) with Tektro TS325A short-reach alloy levers, freewheel, no coaster brake |
| Brake lever pull force | 1.1 kgf (10.8 N) to engage, 1.2 kgf (11.8 N) at full squeeze |
| Gears | 7 speed, 28T x 12-28T cassette |
| Shifter | MicroShift DS45-7R grip shifter with gear indicator, MicroShift RD-M21SS rear derailleur |
| Chain | KMC Z7 |
| Chainguard | none: open chain with a 7-speed derailleur |
| Rims | FSB DA16 double-wall aluminum, reflective |
| Tires | CST C1959 24 x 1.75, 60 TPI, reflective sidewall |
| Tubes | CST, Schrader valve |
| Hubs | sealed bearings, front 100 mm quick-release, rear 130 mm 7-speed |
| Crankset | ProWheel 127 mm, 28T chainring |
| Handlebar width | 560 mm |
| Grips | 22 mm |
| Saddle | Cionlli 9282N |
| Seatpost | 25.4 mm, quick-release clamp |
| Steering limiter | no |
| Quick-release front wheel | yes |
| Maximum rider weight | 130 lb (59 kg) |
| Colors | Candy Cane, Splash Blue, Sunbeam, Olive Pop, Limited Edition |
| In the box | bike partly assembled, pedals marked R and L with reflectors, white front reflector, red rear reflector, 4 and 6 mm hex keys; a kickstand is added on request, as a gift |
| Assembly | about 5 minutes for an adult: mount the handlebar (4 mm hex, 6 Nm), attach the front wheel, install the pedals, clip on the reflectors |
| Price | $699; Limited Edition $799 |
| Returns | 90 days from delivery. Return shipping is on us: we email you a prepaid label. |
Brake lever pull force measured by Biky with a hanging scale at the lever tip, October 2026, one bike each. Weights measured by Biky on a hanging scale, tires inflated, no kickstand, September 30, 2026. The tire pressure range is printed on the tire sidewall.
