Biky Air 16
Age: 4-6 years
Height: 40-46 inches
Weight: 12.3 lbs (5.5 kg)
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The Biky Air 16 weighs 12.3 lb (5.5 kg) without pedals, 12.7 lb with pedals. No coaster brake: it ships with a freewheel and two Tektro hand brakes, front and rear, with short-reach alloy levers, so a child brakes with the hands from the first ride and can pedal backward to reset the pedals. Wirecutter called it the lightest 16-inch bike they have tested. No training wheels. Aluminum frame with a low step-through, full-coverage chainguard, solid front chainring, internal cable routing and a removable turning limiter. For riders aged 4 to 6, 40 to 46 inches tall, with a 16 to 20 inch inseam. 90-day returns and complimentary shipping in the US.
See the Biky guide for a 4 year old, a 5 year old or a 6 or 7 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: Child is visible in the dark, safer.
- Schrader Valve Tubes: Schrader valve, pumps up with any pump.
- Freewheel (No Coaster Brake): No coaster brake, easier to start and stop.
- Optimal Gain Ratio: Gain ratio tuned to age, easy to pedal.
- 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, strong, won't break.
- Turning Limiter: Bars won't swing too far, removable.
- Full-Coverage Chainguard: Chain fully covered, clean and safe.
- 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.
Weight: 12.3 lbs (5.5 kg)
Ideal Child Height: 40-46 inches
Inseam: 16.0-20.0 inches
The Biky Air 16 weighs 12.3 lb (5.5 kg) without pedals and fits riders 40 to 46 inches tall, for 4, 5 and 6 year olds (ages 4 to 6) with a 16 to 20 inch inseam. This is a 16 inch kids bike for a child who already balances well, and it also works as a first pedal bike for a 5 year old who is 40 inches or taller.
Awards: Wirecutter: "the lightest 16-inch bike we've tested"; Two Wheeling Tots Most Room for Growth, 93.1 out of 100; NY Product Design Awards 2024 Silver.
Wirecutter (The New York Times), The Best First Pedal Bikes, 2026: "the lightest 16-inch bike we've tested". nytimes.com
Two Wheeling Tots, The Best 16 Inch Bikes for 4 and 5 Year Olds, updated October 14, 2026: "Most Room for Growth", 93.1 out of 100. twowheelingtots.com
NY Product Design Awards 2024: Silver. bikybikes.com
From Frame to Finish, Built for Kids
Biky 16 are designed to make the transition from balancing to pedaling smooth and enjoyable, encouraging the development of coordination and confidence in bike handling.
Lightweight Frame
Safety Steering
Easy Seat Adjust
Reliable Brakes
Slim Fit Design
Protected Chain
Hidden Cables
Smooth & Safe Tires
Common questions
Yes: the Biky Air 16 fits 4, 5 and 6 year olds who are 40 to 46 inches tall with a 16 to 20 inch inseam. Height decides between two models, because the Biky Air 14 fits up to 44 inches and the Biky Air 16 starts at 40 inches, so many 4 year olds fit both. Take the Air 14 for a first pedal bike, and the Air 16 for a child who already rides and needs room to grow. Both cost $399, or $449 for the Limited Edition. Measure the inseam first with the Biky Finder.
The Biky Air 16 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 16 fits a 16 to 20 inch inseam, and the seat adjusts from 18 to 23 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 start on and the larger one gives room to grow.
The Biky Air 16 arrives partly assembled, and an adult needs about 5 minutes: mount the handlebar (4 mm hex, 6 Nm), install the pedals, clip on the reflectors and check the steering limiter ring. 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, Bubble Pink, Splash Blue, Sunbeam or the Limited Edition, five colors in all.
Orders for the Biky Air 16 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.
A kickstand is added to the Biky Air 16 on request, as a gift: write to info@bikybikes.com when you order or after delivery and we send one at no charge. Training wheels are not included: the box holds the pedals, both reflectors and the 4 and 6 mm hex keys. Training wheels are not needed, because a child who has ridden a balance bike already knows how to balance. Lights are not included either, though the rims and the tire sidewalls are reflective. Helmets and spare parts are listed in accessories.
Yes, the Biky Air 16 has a Hebie Chainglider: a closed cover around the whole chain, front and rear, so trouser legs, laces and fingers never touch the chain and the chain stays clean. A chainring guard on most kids bikes covers only the front sprocket; the Chainglider encloses the entire chain run. The front chainring is solid, with no cut-outs that could pinch a finger.
No. The Biky Air 16 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.
Specifications
| Wheel size | 16 in |
|---|---|
| Rider age | 4, 5 and 6 years (ages 4 to 6) |
| Rider height | 40-46 in |
| Rider inseam | 16-20 in |
| Seat height | 18-23 in |
| Weight without pedals | 12.3 lb (5.5 kg) |
| Weight with pedals | 12.7 lb (5.7 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 JL350-RS 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 | 1 speed, 25T x 14T freewheel |
| Shifter | none |
| Chain | KMC Z6 |
| Chainguard | Hebie Chainglider, fully enclosed front and rear: the whole chain runs inside a closed cover, so clothes and fingers never touch the chain |
| Rims | FSB FS6N single-wall aluminum, reflective |
| Tires | CST C1959 16 x 1.5, 60 TPI, reflective sidewall |
| Tubes | CST, Schrader valve |
| Hubs | sealed bearings, 85 mm front and rear, 14T freewheel |
| Crankset | ProWheel 102 mm, 25T chainring |
| Handlebar width | 460 mm |
| Grips | 19 mm, kid-sized |
| Saddle | Velo VL-5143 |
| Seatpost | 25.4 mm, quick-release clamp |
| Steering limiter | yes, removable |
| Quick-release front wheel | no |
| Maximum rider weight | 130 lb (59 kg) |
| Colors | Candy Cane, Bubble Pink, Splash Blue, Sunbeam, 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), install the pedals, clip on the reflectors, check the steering limiter ring |
| Price | $399; Limited Edition $449 |
| 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.