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Slovakia
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Language
Czech
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Weight 6,85 kg
Height 102 - 125 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!

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newBike
Subscription type
temporarily sold out
All BikeUP 18s are currently out with other riders
BikeUP 18 is currently sold out. Try instead:

Bike description

BikeUP 18 is a lightweight aluminium bike for children who already feel at home on two wheels and want to explore beyond the street in front of the house. The larger 18" wheels add confidence on cycle paths, in the park and on longer rides, while the bike remains light and easy to handle.

With no unnecessary gears, reliable V-brakes and a practical integrated kickstand, it is ready for everyday riding, spontaneous stops and small big adventures.

Technical specifications

Wheel size 18"
Weight 6,85 kg
Height 102 - 125 cm
Min. saddle height 540 mm
Age 4,5-6

Color

  • Metallic orange

Frame

  • Lightweight AA 6061 aluminium alloy frame
  • Geometry tailored to 18" wheels
  • Lowered top tube makes getting on and off easier

Handlebar and stem

  • Anodised aluminium handlebar in matte black
  • Handlebar width 540 mm, bar end diameter 22.2 mm, rise 30 mm
  • 40 mm aluminium stem

Fork

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

Saddle and seatpost

  • Saddle height from the ground: 540–690 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 18"x1.75"
  • Schrader valves for easy inflation with a regular bike pump
  • Aluminium hubs with sealed bearings

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 18"
B Handlebar/grip height 695 mm
C Head tube angle 71°
D Seat tube angle 72°
E Reach 290 mm
F Wheelbase 790 mm
G Minimum saddle height 540 mm
H Maximum saddle height 690 mm
I Crank arm length 114 mm
J Standover height 460 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

5.0 14 reviews
Only customers who actually had the bike can leave a review.
Radovan
29.09.2026

The bike is a little bigger for us, but we're getting used to it; it's lightweight and easy to handle, and we're happy with it.

Bycykel je nam trochu večsí ale zvykáme si , je lahký a dobre ovládatelný sme s nim spokojný.

Erika
14.09.2026

Both the product and the services are top-notch. We are extremely satisfied. We'll rent it again for our son next summer.

Produkt aj služby sú na vysokej úrovni. Sme maximálne spokojní. Na ďalšie leto požičiame pre syna opäť.

Pavol
30.07.2026

Everything

Vsetko

Show all 14 reviews →
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