Bikes Mountain Fixed and hardtail Rock Machine Storm 27 MD 27.5 children's bike, gloss silver/black/red

Rock Machine

Rock Machine Storm 27 MD 27.5 children's bike, gloss silver/black/red

Name: Rock Machine Storm 27 MD 27.5 children's bike, gloss silver/black/red
Price: 431.0 EUR
Availability: LimitedAvailability

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431 €

RRP 482 €

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In-store pickup

From 30.01.2026 (Friday) Check availability

At MTBIKER Service Point

Available from 04.02.2026 (Wednesday)

By courier to your home Express courier delivery GLS

Delivery method on Monday 02.02.2026

Additionally you will receive
Bike fitting discount 20 % (you will save 28 €)

Extended return option up to 100 days More info

Personal collection with free assembly

Pay in instalments See how much you pay

Product description

Rock Machine Storm 27 MD 27.5 children's bike

Level and quality of equipment

Commuting and short rides

A universal means of transport for those who do not take cycling too seriously and are looking for an alternative means of transport at an affordable price. That usually means a compromise of heavier weight and only basic component equipment.

Aluminium frame

Lighter, relatively durable and stiff material that is affordable. The most widespread material for the production of bicycle frames.

27.5” wheels

Universal size for a wide range of bicycles. The advantage is better cross-country ability, higher traction and comfort, and still good dexterity. Slightly heavier.

Mechanical disc brakes

Safer and more efficient braking even in wet and muddy conditions. Exerting more force on the lever for a higher braking effect. The cable may be subject to corrosion. Heavier weight.

Coil fork

Provides adequate comfort and is usually installed on bicycles for recreational and less demanding riding. The disadvantage is its relatively heavy weight.

Specification

Frame	Alloy Al-6061 T6 Custom tubing, Junior Fun Geometry, BB BSA 68 mm, Disc Brake IS 51 mm mount, Replaceable RD Hanger
Fork	spring RST Gila, 1-1/8" / 80 mm Limited light use
Shifting	Shimano SL-RV200-7R RevoShift, 7 r. Commuting and short rides
Derailleur	SHIMANO TY RD-TY500 Commuting and short rides
Cassette	Shimano MF-TZ500-7, 14–34 teeth Commuting and short rides
Chain	KMC Z8.3
Crankset	Wheel Top SXB4BL-MS, 32 teeth Light and occassional rides
Brakes	Tektro MDM 280/Tektro 160 mm Light and occassional rides
Rims	Stars J19SD, 28 holes
Hubs	One1 KTTD8F, 32 holes, M9×100 mm/M10×135 mm, quick release
Tires	WTB Ranger Comp, 27.5×2.0"
Seat post	One1 Alloy, 27.2 mm
Saddle	WTB Selle Junior
Stem	ONE1 TDS-C342 Alloy, 31.8 mm, +3°
Handlebars	One1 Alloy, MTB AL-325BT, 6° upsweep, 9° backsweep, 25 mm travel, width 660 mm, diameter 31.8 mm
Grips	Velo VLG-213
Headset	FSA No.10 Semi-Cartridge, 1-1/8"
Bottom bracket	Thun Ibex 120 mm, BSA, shell 68 mm
Pedals	Marwi, SP400
Spokes	Sapim Galvanized Black

Product details

Sex	Men, Unisex
Model year	2023
Gears	1x7
Groupset	Shimano RevoShift
Size	XS, S
Colour	gloss silver/black/red
Material	aluminium
Wheel material	Aluminium
Wheel diameter	27.5"
Brakes	Mechanical disc brakes
Fork	Spring
Fork travel	80 mm
Dropper post	no
Control type	mechanical
product ID	276775
EAN

Due to long-term issues with the supply of components, some manufacturers exceptionally approach changes of installed components contrary to the specification without letting us know. Unfortunately, it is not in our power to go through each bike and verify the differences between the manufacturer's stated components and its actual equipment. Alternative parts should meet the same standards as the original. We apologise for any discrepancies.

Size chart

Each Rock Machine bicycle model has its own specific geometry and size chart, which can be found on the manufacturer's website for the given bicycle.

How we ship bikes

All bicycles at the MTBIKER shop are new, not-ridden, from an official distributor and with a full warranty. Several brands even offer a lifetime warranty on the frame after registration. We perform all warranty services in MTBIKER stores after personal delivery or after sending the bike (or its part) by courier.

Our bike shipment is as follows:

The bicycle is taken out of the manufacturer's box
The bicycle is assembled, inspected and adjusted (front and rear derailleur, shock, fork, wheels,...)
The bicycle is carefully packed back into a box and shipped
If you order a bicycle for in store pickup or home delivery, the bicycle will be waiting put together, checked and ready to use for you.
If you order a bicycle via courier to your home address, the following must be done at home:
1. Take the bike out of the box and carefully remove safety material and foils
2. Mount handlebar to stem (1 minute, 4 or 5 mm hex hey is needed).
3. Mount front wheel to fork (1 minute, without the need of any tools if the bike has a quick release).
4. Loosen the screws in the headset, straighten the stem with the front wheel, tighten the upper screw on the fork and then tighten the headset (2 minutes, 4 or 5 mm hex key is needed).
5. Mount the pedals to the cranks while lubricating the thread and carefully mounting it the right way (1 minute, 8 mm hex key or 15 mm wrench).
6. Mount seatpost to frame (10 seconds, without needing any tools if the frame has a quick link).
7. Inflate the tires or fork and shock to desired pressure (2 minutes, pump needed).
8. Check the tightening of hex keys and quick-releases (2 minutes, 4 and 5 mm hex key is needed).
9. Go for a test drive! Handle your bicycle carefully until you get used to it. If the bike has disc brakes, their performance will be limited from now on - they will gain their full power after 4-5 strong brakes at higher speed.

Auxiliary video for setting up the bike:

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Fixed and hardtail Rock Machine

This Czech brand has been on the market since 1994. They rose thanks to their trail models that combine fair prices and a lot of fun. Rock Machine produces MTB, gravel, cross, e-bikes and junior bikes.

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