Light quick 20“ bike with a lightweight alloy fork and V-brakes for fun rides in easy terrain. Light wheelset makes the bike easier to move, which helps your little bikers with riding uphill. Thunder 20 is equipped with new MicroSHIFT gear that is easy to control, as well as quality Schwalbe tires with reflective tape for better road safety.
  • Junior Trail Geometry and 100% fun factor design approach
  • Lightweight alloy fork
  • MicroSHIFT 1x7 28 x 12-28
  • Tires Schwalbe CX Comp, 20x1.75" with Reflective tape

FRAMESET
  • COLOUR lesklá červená | bílá | černá, azurová | černá | oranžová
  • FRAME Alloy Al-6061 T6 Custom tubing, juniorská trailová geometrie
  • HEAD SET CH290TBW, 1-1/8"
  • FORK Alloy Custom Tubing, QR Type
  • SIZES 10"

DRIVETRAIN
  • GEARS 1×7, 28×12-28, 233 %
  • SHIFTER microSHIFT DS45-7R, 7 r.
  • REAR DERAILLEUR microSHIFT RD-M21SS
  • CRANKSET Wheel Top SXB4BL-MS, 140 mm, 28 zubů
  • CASSETE Shimano CS-HG200-7, 12-28 zubů
  • BOTTOM BRACKET Thun Topaz 120 mm, BSA, shell 68 mm
  • CHAIN KMC Z8.3
  • PEDALS Marwi SP-202

COMPONENTS
  • HANDLEBAR One1 Alloy, 10° backsweep, zvýšení 30 mm, š. 560 mm, ø 25,4 mm
  • STEM One1 Alloy, ø 25,4 mm, d. 35 mm, 15°
  • GRIPS Velo
  • BRAKES ráfkové Tektro
  • SADDLE One1 Junior
  • SEAT POST One1 Alloy, ø 27,2 mm, d. 230 mm

WHEELS
  • FRONT HUB One1 KTA55F, 20 děr, M9 × 100 mm, QR Type
  • REAR HUB One1 KTAZ2R, 20 děr, M10 × 130 mm, Cassete, QR Type
  • RIMS Stars J19SD, 20 děr
  • TIRES Schwalbe CX Comp, 20×1,75", reflexní pásek
  • SPOKES Sapim Galvanized Black

WEIGHT
  • Total WEIGHT* 8,4 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 10"
WHEELS SIZE 10": 20"
SEAT TUBE LENGTH (mm) 10": 255
seat tube angle degree 10": 73
EFFECTIVE TOP TUBE LENGTH (mm) 10": 460
REAch (mm) 10": 335
STACK HEIGHT (MM) 10": 409
HEAD TUBE LENGTH (mm) 10": 110
head tube angle degree 10": 70
CHAINSTAY LENGTH (mm) 10": 350
bb drop (mm) 10": 10
WHEELBASE (mm) 10": 870
Handlebar Width (mm) 10": 560 - R30
Stem Length (mm) 10": 35
Crank Length (mm) 10": 127
seat post lenght/travel (mm) 10": 230

Frame size

We reccomend *

* The recommendation covers most common body types. Always try the bike yourself at the nearest shop!

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

Fahrrad Handels Gesellschaft Radschlag mbH

2 km away

Hallgartenstraße 56

60389 Frankfurt am Main

http://www.radschlag.de
info@radschlag.de

Tel.: +49 69 452064

Fax.: 069 453099

Fahrrad Müller

8 km away

Frankfurter Str. 67

61118 Bad Vilbel

http://www.fahrrad-mueller.info
info@fahrrad-mueller.info

Tel.: +49 6101 85826

Fax.: +49 6101 84064

Radhaus Walldorf

15 km away

Kelsterbacher Straße 69

64546 Mörfelden-Walldorf

http://www.radhaus-walldorf.de
info@radhaus-walldorf.de

Tel.: +49 6105 2768462

Fax.: +49 6105 2768464

H. Göbel Fahrräder und Zubehör

19 km away

Jügesheimer Weg 23

63500 Seligenstadt

h.goebel-fahrraeder@web.de

Tel.: +49 6182 961797

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!

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