Quick junior 27,5“ bike with lightweight alloy fork, built with respect to weight and affordable price. Quality frame and fork with Junior Trail geometry help you control your bike easily off-road and quickly on road. Shimano 1x9 gear is intuitive and easy to operate. Fast tires have reasonable tread universal for the trail and cycle tracks.
  • 1st GEN frame with specific Junior Trail Geometry and unique "Big wheels for Big smiles" design approach
  • Lightweight alloy fork
  • SHIMANO ALTUS 1x9 32 x 11-36
  • Tires WTB Nano Race, 29x2.10"

FRAMESET
  • COLOUR Gloss Dark Red/Black/Orange
  • FRAME Alloy Al-6061 T6 Custom tubing, Junior Trail Geometry, Shark Spine EVO 27.5", BB BSA 68mm, OLD 135x9, V-brake pivots, Fender Ready Dropout, Replaceable RD Hanger, Kickstand mount
  • HEAD SET FSA No.10 Semi-Cartrige, 1-1/8“
  • FORK Thunder 27.5", Alloy Custom Tubing, Ahead 1-1/8", V-Brake, QR Type
  • SIZES 13.5"(XS), 15"(S)

DRIVETRAIN
  • GEARS 1x9
  • SHIFTER SHIMANO ALTUS SL-M2010-9R RapidFire Plus, 9-speed
  • REAR DERAILLEUR SHIMANO ALTUS RD-M2000 Shadow
  • CRANKSET Wheel Top SXB4BL-MS, 32T
  • CASSETTE SHIMANO ACERA CS-HG200-9, 11-36T
  • BOTTOM BRACKET Thun Topaz 120mm, BSA, shell 68mm
  • CHAIN KMC X9
  • PEDALS Marwi SP-400

COMPONENTS
  • HANDLEBAR ONE1 Alloy, MTB AL-325BT, 6° upsweep, 9° backsweep, 25mm rise, 660mm, 31.8mm
  • STEM ONE1 TDS-C342 Alloy, 31.8xE45mm, +3°
  • GRIPS ONE1 VL-G1661D2N, Lock-On
  • BRAKES Tektro V-brakes
  • SADDLE ONE1 Junior
  • SEAT POST ONE1 Alloy, SP C207, 27.2x300mm

WHEELS
  • FRONT HUB ONE1 KTA55F, 28H, M9x100mm, QR Type
  • REAR HUB ONE1 KTAZER, 28H, M10x130, CASSETE, QR Type
  • RIMS Stars J19SZ, 28H
  • TIRES WTB Nano Race, 27.5x2.10"
  • SPOKES Sapim Galvanized Black

WEIGHT
  • WEIGHT* 10.8 Kg (XS size)

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.

Wheelsize
Frame Size 13.5" (XS) 15" (S)
13.5" (XS): 27.5" 15" (S): 27.5"
SEAT TUBE LENGTH (mm) 13.5" (XS): 343 15" (S): 381
seat tube angle degree 13.5" (XS): 73 15" (S): 73
EFFECTIVE TOP TUBE LENGTH (mm) 13.5" (XS): 545 15" (S): 560
REAch (mm) 13.5" (XS): 379 15" (S): 391
STACK HEIGHT (MM) 13.5" (XS): 540 15" (S): 550
HEAD TUBE LENGTH (mm) 13.5" (XS): 90 15" (S): 100
head tube angle degree 13.5" (XS): 69 15" (S): 69
CHAINSTAY LENGTH (mm) 13.5" (XS): 430 15" (S): 430
bb drop (mm) 13.5" (XS): 41 15" (S): 41
WHEELBASE (mm) 13.5" (XS): 1051 15" (S): 1063
Handlebar Width (mm) 13.5" (XS): 660 - R25 15" (S): 660 - R25
Stem Length (mm) 13.5" (XS): 45 15" (S): 45
Crank Length (mm) 13.5" (XS): 160 15" (S): 160
seat post lenght (mm) 13.5" (XS): 300 15" (S): 300

Frame size

We reccomend *

13.5" (XS)
15" (S)

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

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

1267 km away

U Elekrárny 306

53002 Pardubice - Čeperka

Bicicletaria Azores

4054 km away

R. do Espírito Santo

9500-337 Fajã de Baixo

bicicletariaaz@gmail.com

Tel.: +351 913 473 453

Picton Cycles

5250 km away

High St 11-13

L15 8HE Liverpool

Bike Zone - Povoa de Varzim

5259 km away

R. Gomes de Amorim

4490-509 Póvoa de Varzim

povoa@bikezone.pt

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.

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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