Rockrider 540 Mountain Bike - Grey



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Made for

MTB touring.
Hydraulic disc brakes, Shimano 27 speeds, fork with lockout, integrated seat clamp, lightweight versatile tyres, wide pedals with very good grip: it all adds up to a significant advantage while biking

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Cycling comfort100 mm hydraulic fork (smoother). Ergonomic saddle. Height-adjustable stem.
EfficiencyShimano Altus 27 speeds. Lightweight tyres, high traction. Fork with lockout.
PrecisionHydraulic disc brakes.Tyres made of soft rubber. Wide pedals with strong grip.
Ease of useLockout your fork in a single step. Ergonomic built-in seat clamp.
Lifetime warrantyB'Twin offers a lifetime warranty on the frame, stem and handlebar.
WarrantyFrame, handlebar and stem have a lifetime warranty. 2-year warranty for parts (excl. wearing parts)
Technical Information

Rockrider CGF Evo (Comfort Geometry Frame) frame, - made of 6061 aluminium - for 27.5" wheels - comfortable sitting position thanks to raised seat position. - with seat 5 times more flexible than a standard frame thanks to a narrow 27.2 mm seat post. - with low bottom bracket: mountain bike stable in bends, makes it easy to put foot on the ground, - open steering angle (69.5°): keeps mountain bike stable while riding. - short rear wheel base: bike is easy to turn.- and a lifetime warranty!
Suntour XCR 100 fork with 100 mm travel: - fork stiffness can be adjusted (more/less). - with fork lockout to prevent bobbing on rolling terrain.
No rear suspension.
Prowheel Flint 401 triple-chainring chainset (22/32/44 teeth). Shimano Altus 9-speed rear derailleur. Microshift MS50 front derailleur. Shimano Altus M370 shifters with speed indicators. Shimano cassette with 9 cogs, 11 to 34 teeth.
Hayes Radar hydraulic disc brakes on front and rear: more powerful and progressive braking even in rain and muddy conditions, with only minimal pressure on the levers required.
B'Twin Sport handlebar: - made of aluminium for lower weight. - 660 mm (size S and M), or 680 mm (size L and XL): wider for extra stability. - oversize diameter, for greater rigidity.
Exclusive B'Twin Upside Down 0/30 stem: - made from aluminium for less weight, - 70 mm (size S and M), or 80 mm (size L): shorter for more precise steering. - can be raised by up to 3 cm with 5 adjustment positions (+0 mm, +7.5 mm, +15 mm, +22.5 mm and +30 mm). - is 15% stiffer thanks to its width being increased by 48%, providing more precise steering.
Semi-integrated Aheadset offers improved watertightness, more precise steering, and an integrated look. B'Twin Sport 120 mm grips with grooves: genuine comfort while riding.
Exclusive B'Twin Ergofit Evo saddle offering exceptional comfort thanks to: - increased width. - "hammock" shape. - pressure is distributed over a wide area, regardless of the width of the rider's pelvis.
Seat post
B'Twin Sport seat post: - made of aluminium for lower 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 wide adjustment range.
Aero Trail Evo wheels: - aluminium, double-wall: lightweight, stiff, and durable. - with a 27.5" diameter: the best balance of comfort and performance. - with 28 spokes to reduce weight while still guaranteeing rigidity and strength.
Exclusive B'Twin All Terrain Light tyres: - 27.5" x 2.0 - with lugs exclusively designed for all-terrain use, great for any type of route. - the sidewalls of the tyres have been lightened to reduce the effect of rotating mass. - with a pressure guideline chart based on rider weight.
B'Twin Flat Evo pedals: - made from resin: both sturdy and lightweight. - with a large surface area for better power transfer while pedalling and better steering. - with raised pins that are rougher so as to provide the pedal with more grip.
A bottle cage, saddle bag, pannier rack, mudguards, stand, etc. can be mounted.
13.6 kg in size M without pedals.
Electric assistance
No electric assistance.
SizeS / M / L

WHEEL SIZE27.5 inches

Weight13.6 kg in M without pedals

Life warrantyframe, stem and handlebar

SUSPENSION100 mm suspension fork

COLOURSGrey / White / Red
Information / Concept / Technology
Stockage tips
It is strongly recommended to store your bike in a cool, dry place, away from corrosive products and salty air.