20“ kids´ bike for little cyclists who prefer pink colour. Lightweight aluminium frame with comfortable geometry will teach little bikers the correct riding techniques. Shimano 1X6 gear for relaxed trips and climbing first hills, light V-brakes with sufficient brake force, and the merry design have a single goal: to show the kids that a bike is fun.
  • Junior Fun Geometry
  • Alloy fork
  • SHIMANO/microSHIFT 1x6 28x14-28
  • TEKTRO V-brakes
  • Tires Schwalbe Impac CrossPac, 20x1.75"

  • COLOUR Gloss Neon Pink/Violet/Neon Cyan
  • FRAME Alloy Al-6061 T6 Custom tubing, Junior Fun Geometry, BB BSA 68mm , OLD 135x9, V-brake pivots, Fender Ready Dropout, Replaceable RD Hanger, Kickstand mount
  • HEAD SET CH290TBW, 1-1/8"
  • FORK Catherine 20", Alloy rigid, Ahead 1-1/8", V-Brake, QR Type
  • SIZES 9.0"

  • GEARS 1×6, 28×14-28, 200 %
  • SHIFTER SHIMANO SL-RV200-6R RevoShift, 6-speed
  • REAR DERAILLEUR microSHIFT RD-M21SS, Super Short cage
  • CRANKSET Wheel Top SXB4BL-MS, 28T
  • CASSETE SHIMANO MF-TZ500-6, 14-28T
  • BOTTOM BRACKET Thun Topaz 120mm, BSA, shell 68mm
  • CHAIN KMC Z8.3
  • PEDALS Marwi SP-202

  • HANDLEBAR ONE1 Hi-ten, MTB-152TP, 10° backsweep, 20mm rise, 560mm, 25.4mm
  • STEM ONE1 MAS-M60368 Alloy, 25.4xE35mm, 15°
  • GRIPS Velo VL-G213
  • BRAKES Tektro V-brakes
  • SADDLE ONE1 Junior
  • SEAT POST ONE1 Alloy, SP C208, 27.2x230mm

  • FRONT HUB ONE1 KTA55F, 24H, M9x100mm, QR Type
  • REAR HUB ONE1 KTA52R, 24H, M10x135, FREEWHEEL, QR Type
  • RIMS Stars J19SD, 24H
  • TIRES Schwalbe Impac CrossPac, 20x1.75"
  • SPOKES Sapim Galvanized Black

  • WEIGHT* 9.1 Kg

Weight is set for M sized frame unless stated otherwise. We focus on maximum reliability, so cutting some grams down is not our priority! The weight is measured as the each bike specification shows.

Frame Size 9"
Rider Size (CM) 9": 110 – 125
Wheels size 9": 20"
REAch (mm) 9": 333
bb drop (mm) 9": 0
WHEELBASE (mm) 9": 868
head tube angle degree 9": 69
seat tube angle degree 9": 73
HEAD TUBE LENGTH (mm) 9": 100
SEAT TUBE LENGTH (mm) 9": 230
SEAT Post LENGTH / TRAVEL (mm) 9": 230
Handlebar Width (mm) 9": 560 - R20
Stem Length (mm) 9": 35
Crank Length (mm) 9": 127

2021 NOTE: Due to the pandemic and difficulties in the delivery chain arising worldwide & extreme demand for our bikes at the same time, we reserve the right to replace some parts with those at the same level of performance (e.g. different brand, the same level of parts) to keep the overall quality of our bicycles. We’re sorry about that. At the end of the day, riding a bike is the best way of #staypositive ever, no matter what brand your handlebar or any other part is!

Manufacturers reserve the right to vary specifiations, including colors, with or without notice at such times in such manner as deemed appropriate. Major as well as minor changes may be involved. Every effort, however, is made to ensure the accuracy of the particulars contained in this presentation. Consult your Dealer for details regarding the specifications of any featured product. This presentation shall not constitute - under any circumstances whatsoever - an offer by the Company to any individual. All sales are made by the Distributor or Dealer subject to and with the benefit of the standard Conditions of Sale and Warranty provided by the Distributor or Dealer, copies of which may be obtained upon request. While efforts are made to ensure specification accuracy cannot always immediately reflect either change in specification or in some isolated cases the provision of a particular feature. Customers are always advised to discuss specific details with the supplying Dealer, especially if a selection is dependent upon one of the features advertised.* The range of the e-bike depends on many factors such as the rider's weight, the track profile, the level of assistance, gear settings, the wind, etc., so the information is indicative and may vary.

Nearest shops

Kola Pešek a syn I

1034 km away

U Elekrárny 306

53002 Pardubice - Čeperka

Bicicletaria Azores

4455 km away

R. do Espírito Santo

9500-337 Fajã de Baixo


Tel.: +351 913 473 453

Picton Cycles

5673 km away

High St 11-13

L15 8HE Liverpool

Bike Zone - Povoa de Varzim

5681 km away

R. Gomes de Amorim

4490-509 Póvoa de Varzim


Tel.: +351 936 546 431

We strongly recommend buying our products from authorized dealers only.

Professionals who can advise you the best bike fits your riding style and subsequent service.

Consider these

Rock Machine Research&Development

Passion. Mission.

If you want to burn, be on fire! From the first pencil sketch, through prototype testing and debugging to the finished product tested in the most rigorous labs by the engineers and on the trails by our ambassadors and us.

See you on the trail!

Instagram your Rock Machine moments and get featured!