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Alu frame, lockout suspension, Shimano 21 speeds.

Reference : 8396174

Rockrider 340 Mountain Bike, Ltd Edition - Grey

Designed for cyclists looking for a great value bike ideally suited to leisure trail riding. The first true touring mountain bike: comfortable thanks to its raised position and suspension with handlebar lockout. Efficient thanks to the aluminium frame & Shimano 21 speeds and disc brakes

Unfortunately, this product is no longer available


The ROCKRIDER 340 was designed and created in France, at the B'Twin Village in Lille, by a team of experts and cycling enthusiasts dedicated to designing our mountain bike Sport Touring line. Production took place in different factories in Europe as close to our Decathlon stores as possible. More information available on our website:


Exclusive Rockrider 340 frame, with an upright position for multi-purpose use. Made from reinforced 6061-T4T6 aluminium that combines durability and low weight.
Unisex, "sloping" geometry for both men and women.
Painted with 3 coats of paint and varnished designs for long-lasting protection.

Front suspension

ROCK SHOX RECON hydraulic front suspension with 100 mm travel and adjustable stiffness using a dial, adjustable reflex, and equipped with a lockout on the handlebar for faster terrain.

Rear suspension

No rear suspension.

Drive train

Triple-chainring steel chainset (22/32/42 teeth) with a plastic guard.
Shimano Tourney TY500 7-speed rear derailleur.
Shimano TZ30 or Microshift MS22 front derailleur.
SRAM MRX21 speed grip shifters, with speed indicators.
SHIMANO TZ21 7-sprocket cassette, with 14 to 28 teeth.
KMC Z51 chain that's wider for more durability.


Front Hayes MX5 mechanical disc for more powerful braking. Equipped with a 160 mm disc.
Rear V-brake system with a helical spring. Aluminium MTB brake levers that require only 2 fingers to operate.


Semi-raised mountain bike handlebar for added comfort while riding.
600 mm wide steel handlebar that combines comfort and stability.
Aluminium stem, 90 mm (XS / S / M) or 110 mm (L / XL), with a 10° angle for maximum comfort.
Aheadset-type headset for greater shock resistance and more stiffness in turns.
B'Twin Sport 100 grips have a soft-touch finish for better grip and extend the grip shifters.


26" B'Twin Alloy Single Wall wheel.
Wide wheel with 36 spokes for greater durability and shock resistance.
Quick-release on the front wheel for easier maintenance, transport and storage.
Lock nut on back wheel to reduce risk of theft.


New B'Twin All Terrain Dry mountain bike 26" x 2.0 tyres known for their high performance (thanks to fast central tread) and good grip in the turns (thanks to side lugs).

Saddle / seat post

Comfortable B'TWIN saddle.
Steel mountain bike seat post with a 29.8 mm diameter and 350 mm long.


Bike comes with MTB platform pedals with bearings, made from hard resin for lower weight and greater safety (less aggressive in case of pedal that slips).


14.5 kg in size XS without pedals.
14.8 kg in size S without pedals.
14.85 kg in M without pedals.
15.0 kg in size L without pedals.
15.2 kg in size XL without pedals.


Comes with a derailleur guard and chainring guard, bell, front and rear lights, and reflectors on the wheels and pedals.

Frame compatible with a rear pannier rack, baby seat, stand, bottle holder, front and rear mudguards, saddlebag, etc.

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Test Product We also recommend that beginners wear cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.
Guarantee : Lifetime (frame, stem, handlebars). Details on of spare parts: 2 years.