Hydraulic disc brakes. Tyres made of soft rubber. Wide pedals with strong grip.
Ease of use
Lockout your fork in a single step. Ergonomic built-in seat clamp collar.
B'Twin provides a lifetime warranty on the frame, stem and handlebar.
The ROCKRIDER 540 was designed and created in Suzhou, China, by a team of experts and cycling enthusiasts dedicated to designing our mountain bike Sport Trial range.Production was also done near Suzhou, as close to our Decathlon stores as possible.
Rockrider CGF Evo (Comfort Geometry Frame) 6061 aluminium frame for 27.5" wheels.Comfortable seating position thanks to raised steering.Seat is 5 times more flexible than a standard frame thanks to a narrow 27.2 mm seat post.Low bottom bracket: helps keep the mountain bike stable in turns, and makes it easier to place foot on the ground.Open steering angle (69.5°): keeps mountain bike stable while riding.Short rear wheel base: bike is easy to turn.LIFETIME WARRANTY!
Suntour XCR 100 fork with 100 mm of travel and adjustable stiffness (more/less). Fork lockout to prevent bobbing on faster terrain.
No rear suspension.
Triple-chainring chainset (22/32/44 teeth).Shimano Altus 9-speed rear derailleur.Microshift MS25 front derailleur.Shimano Altus M370 shifters with speed indicators.Shimano HG200 cassette with 9 cogs and 11-34 teeth.
Tektro hydraulic disc brakes on the front and rear, with 160 mm discs.Hydraulic brakes are more powerful and progressive, making it easier to apply pressure on the levers.
Handlebar / stem / steering / grips
B'Twin Sport Oversize aluminium handlebar, 660 mm (sizes S and M).Exclusive B'Twin aluminium stem, 70 mm (sizes S and M).Stem can be raised by up to 3 cm, with 5 settings (+ 0 mm, + 7.5 mm, + 15 mm, + 22.5 mm, + 30 mm).Semi-integrated A-headset headset—better sealed and integrated style.B'Twin Sport handles with grooves, 120 mm long: genuine comfort while riding.
Aero Trail Evo aluminium wheels with double-walled rims: lightweight, stiff, and durable.27.5" diameter: the best balance of comfort and performance.Designed with 28 spokes to reduce weight while still ensuring rigidity and strength.
Exclusive B'Twin All Terrain Light 27.5" x 2.0 tyres with a system of lugs specially designed for all terrain use on any type of surface.Lighter tyre sidewalls reduce the effect of rotating mass.Chart with recommended tyre pressure based on rider's weight (indicated on the tyre sidewalls).
Saddle / seat post
Exclusive B'Twin Ergofit Evo saddle offers outstanding comfort thanks to its wider "hammock" shape and good distribution of pressure points regardless of the rider's pelvis width. B'Twin Sport seat post in aluminium for less weight.27.2 mm diameter provides the seat with a natural flex that's 5 times greater than a classic seat post.400 mm long, offering a broad adjustment range.
Comes with B'Twin Flat Evo resin pedals: sturdy and lightweight.A large pressure surface area for more power while pedalling and improved directional control of your mountain bike.More aggressive pins for better contact between the foot and the pedal.
13.50 kg in S without pedals.13.95 kg in M without pedals.14.05 kg in L without pedals.14.20 kg in XL without pedals.
Frame can take a bottle cage, saddle bag, mud guard, stand, pannier rack.
Information / Concept / Technology
Frame (for bike) : 100.0% Aluminium
We also recommend that beginners wear cycling shorts with a protective pad and/or a gel saddle cover to reduce soreness.
Store in a cool, dry place, away from corrosive products and salty air.
Lifetime warranty on manufacturing defects for all metal frames, rigid forks, stems & handlebars
5 years warranty on manufacturing defects for carbon frames & forks
2 years warranty on manufacturing defects for all other parts
*Excludes damages arising from normal wear & tear, misuse, negligence and unauthorized modifications