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Slovak
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Weight 8,1 kg
Height 105 - 135 cm
Different size? See all models
12"
Foxie 12 3,0 kg • 90 - 100 cm In stock
12"
Foxie 12+ 3,1 kg • 90 - 100 cm In stock
14"
Foxie 14 5,6 kg • 95 - 115 cm In stock
16"
Foxie 16 5,9 kg • 100 - 125 cm In stock
18"
Foxie 18 6,4 kg • 105 - 130 cm In stock
20"
BikeUP 20 8.35 kg • 105 - 135 cm In stock
24"
BikeUP 24 9.6 kg • 125 - 145 cm In stock
Bike type:
reBike

With reBike you can rent a used bike that is fully functional, safe and ready to ride. Minor scratches won't detract from its beauty! 😉 Choose reBike and ride together greener and cheaper!

Show details
newBike
Subscription type
All Foxie 20s are currently out with other riders
Foxie 20 is currently sold out. Try instead:

Bike description

With a Foxie 20 subscription, you get a well-equipped aluminum bike with 20" wheels. It’s designed for bikers who are 105-135 cm tall and aged 6-9 years. This is an ultra-light, safe, and highly maneuverable bike, featuring straight aluminum handlebars, a rigid fork, and disc brakes.

The 2.125" wide tires provide excellent grip both on terrain and in wet conditions while maintaining the cushioning effect, even with the rigid fork. Our Foxie 20 is equipped with two separate disc brakes (160/160 mm), specifically designed for smaller riders' hands, providing the necessary braking force to stop in any situation. The Foxie 20 features a 1x7 drivetrain (36x14-28 teeth) with 152 mm aluminum cranks, offering the ideal range for hill climbs and flat terrain rides. The narrow-wide chainring profile ensures maximum chain retention, minimizing the chance of the chain dropping. With this setup, including a 7-speed Shimano derailleur, the Foxie 20 is the perfect choice for kids who want to improve their biking skills and explore the world on two wheels.

Weighing only 8.1 kg, the Foxie 20 is among the lightest children's bikes on the market. Each of our models comes with a handle under the seat, so you can easily support your little cyclist while they’re learning. And when they get tired, the handle allows you to comfortably carry the bike home.

Follow us on social media and subscribe to our newsletter so you don’t miss the announcement for the upcoming Foxie 24!

Technical specifications

Wheel size 20"
Weight 8,1 kg
Height 105 - 135 cm
Min. saddle height 580 mm
Age 5-7

Color

  • Metallic orange

Frame

  • Lightweight AA 6061 aluminium alloy frame
  • Geometry tailored to 20" wheels
  • Mounting hole for mudguards

Handlebar and stem

  • Anodised aluminium handlebar in matte black
  • 40 mm aluminium stem

Fork

  • Anodised aluminium fork in matte black
  • Ready for mudguard mounting

Saddle and seatpost

  • Saddle height from the ground: 580–695 mm
  • Seatpost with a marked minimum insertion line
  • Quick-release clamp for tool-free saddle height adjustment

Brakes

  • Easy-to-operate front and rear V-brakes

Tyres and wheels

  • Size 20"x2.125"
  • Schrader valves for easy inflation with a regular bike pump
  • Aluminium hubs with sealed bearings

Gears and drivetrain

  • Grip Shift twist shifter changes 7 gears with a turn of the grip
  • Clear gear indicator
  • Single narrow-wide chainring up front for simple operation without a front derailleur

Geometry

The measurements that tell you whether the bike fits your child — and how long it will last them.

ABCDEFGHIJ

Bike measurements

A Wheel size 20"
B Handlebar/grip height 765 mm
C Head tube angle 71°
D Seat tube angle 72°
E Reach 320 mm
F Wheelbase 875 mm
G Minimum saddle height 580 mm
H Maximum saddle height 695 mm
I Crank arm length 152 mm
J Standover height 530 mm

How to tell whether the bike fits

1 If they can't ride yet

The minimum saddle height decides. Seated on the lowest saddle position, the child must reach the ground with both feet flat. Its inseam must therefore be at least the minimum saddle height.

2 If they already ride

The stand-over height decides. Standing over the frame in front of the saddle, both feet must be flat on the ground with at least 2 cm to spare. It no longer needs to reach the ground from the saddle — the saddle goes higher so the leg is almost straight.

— If the size doesn't fit, we swap it free within 7 days — you only pay the courier.

How to measure the inseam

The one number you need. You compare it with the bike's measurements.

How to measure the inseam
inseam
  1. 1

    Stand the child with its back to a wall, in the shoes it will ride in, feet together.

  2. 2

    Put a book, spine up, between its legs and press gently — as if it were sitting on the saddle.

  3. 3

    Measure from the top of the book to the floor. That is the inseam.

Compare it with the bike's measurements

If the child is still learning, the inseam must be at least the minimum saddle height — so it reaches the ground flat-footed from the saddle. If it already rides, it only needs to be at least 2 cm more than the stand-over height.

If the size doesn't fit, we swap it free within 7 days — you only pay the courier.

Reviews

4.9 16 reviews
Only customers who actually had the bike can leave a review.
Lenka
29.09.2026

Both of our kids used BikeUp, and it was absolutely fantastic. When it was time to upgrade to a bigger bike, the exchange went off without a hitch. The bikes are great.

Obě naše děti využívali bikeup a naprostá paráda. Když bylo čas na větší kolo , výměna proběhla jako po másle . Kola jsou skvělá .

Michaela
25.08.2026
Gabriela
11.08.2026
Show all 16 reviews →
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