Bikes Mountain Fixed and hardtail DEMA Energy 12 29 bike, black/silver

DEMA

DEMA Energy 12 29 bike, black/silver

Name: DEMA Energy 12 29 bike, black/silver
Price: 669.0 EUR
Availability: InStock
Rating: 4 (1 reviews)

4/5 (1 rating)

669 €

RRP 1,129 €

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In-store pickup

Tomorrow from 15:00 Check availability

At MTBIKER Service Point

Available from 27.01.2026 (Tuesday)

By courier to your home Express courier delivery GLS

Delivery method on Friday 23.01.2026

Do you want to test the bike without any obligation?
Choose personal pickup at the store and decide on the spot.

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

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Product description

DEMA Energy 12 29 bicycle

Level and quality of equipment

Regular and longer rides

Especially suitable for sports enthusiasts who like to spend time on wheels after work or over the weekend. Suitable for regular riding, from cycle paths, fields and forest roads to moderately demanding terrain. Usually fitted with components that are the golden middle when it comes to reliability and durability.

Aluminium frame

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

Hydraulic disc brakes

Reliable in all conditions, better modulation of the braking effect with the use of less force on the lever. Heavier weight, more demanding service.

Air fork

The best option in terms of weight and comfort. Provides more adjustment options (rebound, compression). Requires regular service - the service cycle is specified by the manufacturer.

29” wheels

The advantage is better terrain passability, better rolling and traction. However, they are heavier, which also applies to tires.

Specification

Frame	DEMA Energy Boost Alloy
Fork	RockShox Judy 100 mm A noticeably more comfortable ride
Shifting	Shimano Deore 2x11 Regular and longer rides
Derailleur	Shimano Deore RD-M4120 SGS Regular and longer rides
Front derailleur	Shimano FD-M5100 2x11 Regular and longer rides
Cassette	Shimano Deore 11-42T Light and occassional rides
Chain	Shimano CN-HG601 11SPD
Crankset	Shimano FC-M5100-B2 36/26T 175 mm Regular and longer rides
Brakes	Shimano MT200 Light and occassional rides
Rims	WTB ST i27 TCS 2.0 29" 32H
Hubs	SHIMANO MT400
Tires	Michelin Country Grip 29x2.2"
Seat post	Extend Alloy 31.6 x 400 mm
Saddle	Selle Italia MODEL-X
Stem	Extend Race 80 mm -10°
Handlebars	Extend Race A6045BT Flat 740 mm
Grips	Extend Absorbic Silicone 130 mm
Headset	Extend H868P, 1 1/8" - 1.5" tapped
Bottom bracket	Shimano Mega EXO BB-MT500

If pedals are not listed in the bike's specifications, the bike is likely delivered without pedals.

Product details

Sex	Men, Unisex
Model year	2024
Gears	2x11
Groupset	Shimano Deore
Size	M, L, XL
Colour	black/silver
Material	aluminium
Wheel material	Aluminium
Wheel diameter	29"
Brakes	Hydraulic disc brakes
Fork	Air
Fork travel	100 mm
Dropper post	no
Control type	mechanical
product ID	318838
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.

Product content

Size chart

Bike size	M	L	XL
Height (cm)	160 - 175 cm	175 - 185 cm	> 185 cm

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 DEMA

DEMA is the first and oldest Slovak bicycle brand with more than 30 years of tradition continuously presented on the European market. DEMA has won many awards within the most recognized global brand evaluation program - Superbrands Award. DEMA offers a wide portfolio of bicycles from electric bicycles, through MTB, cross, or City bicycles to bicycles for our little ones. All with modern design and quality components.

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