27.5" Mountain Bike ST 540 - Grey
Store Availability
Store availability
BENEFITS
Directional control
Control your trajectory: hydraulic disc brakes, wide tyres and handlebar.
Easy to use
Lock the fork in one quick step, and adjust the saddle effortlessly.
Lifetime warranty
Rockrider provides a lifetime guarantee for the frame, stem and handlebars.
Efficiency
Ride efficiently thanks to 27.5" wheels, 18 speeds and light tyres.
Cycling comfort
Enjoy an upright position, adjustable stem, 100mm suspension and hammock saddle.
Instructions
DownloadTECHNICAL INFORMATIONS
WHAT SIZE MOUNTAIN BIKE TO CHOOSE?
Several sizes available:
S: between 1.50m and 1.64m
M: between 1.65m and 1.74m
L: between 1.75m and 1.84m
XL: between 1.85 m and 2.00 m
If you are on the limit between 2 sizes:
Choose the smaller size for easier steering (easier to handle) and comfort (straighter back).
Choose the larger size for easier pedalling with a more stretched-out position (position more suited to performance).
UNISEX FRAME
With a heavily sloped top tube and a wide range of sizes (from S: 1.50m to XL:2.00m).
The ST 540 mountain bike frame is UNISEX.
The ST 540 mountain bike is available with the same frame in a WOMEN'S version: fitted seat, narrower handlebar, shorter stem, fork with a more flexible spring, and brake levers that are closer together.
As a woman, if you choose the men's model, we recommend at least purchasing the Women's Sport 500 saddle which is fitted to the female form.
A WORD FROM THE TEAM
The ST 540 mountain bike was fully designed and developed by our passionate MTB team at the B'Twin Village in France (Lille).
A comfortable, efficient mountain bike: more progressive, powerful hydraulic disc brakes, 100mm travel in the fork to easily ride over obstacles, and simple and effective double chainring,...
MTBers have been involved at every stage of this bike's development process.
A COMFORTABLE, PLAYFUL FRAME
For less weight and more efficient pedalling, the Rockrider ST 540 MTB frame is made from 6061 aluminium (only 2.1 kg in size M). Our designers have designed and developed it so it is comfortable and easy to manoeuvre. Its slope has been designed to keep your back straighter. The lower bottom bracket helps keep you more stable during turns.
100 MM FRONT SUSPENSION
Ride over obstacles with the hydraulic fork. Its 100 mm travel allows you to calmly overcome more obstacles (roots, pebbles, stones, mud).
Its built-in lockout system helps to prevent bobbing and loss of speed on faster terrain.
REAR SUSPENSION: NONE
This mountain bike has no rear suspension.
This is a "semi-rigid" mountain bike. Compared to a full suspension mountain bike (with rear suspension), the advantages are clear: the mountain bike is lighter; less energy is lost on flatter ground. If however your primary concern is comfort and manoeuvrability, the ST 540 is available in a full suspension version with suspension at the rear.
DOUBLE CHAINRING DERAILLEUR AND DRIVETRAIN
2 9-speed chainrings for 18 easy-to-use speeds.
The thru-axle bottom bracket is very stiff and long-lasting.
Details: -SHIMANO Altus 22 and 36 tooth double chainring
-MICROSHIFT FD-M462 front derailleur
-SHIMANO Altus rear derailleur
-SHIMANO Acera shifters with speed indicators
-MICROSHIFT H092 9-cog 11 to 36 tooth cassette
-KMC X9 chain
HANDLEBARS, STEM, GRIPS
The adjustable stem brings the ST 540 controls to your hands. The all-aluminium Rockrider stem is 70 mm (size S), 80 mm (size M/L), or 90 mm (size XL) and can be raised to 5 adjustment intervals: + 0mm, + 7.5mm, + 15mm, + 22.5mm, + 30mm.
In detail:
- 720mm oversize Rockrider Sport aluminium handlebar
- Rockrider Sport "soft touch" ergonomic grips for good grip and a comfortable feel.
Saddle
Our teams designed and created an exclusive ROCKRIDER ERGOFIT saddle. Designed for all hip widths, its hammock shape is very comfortable for long, athletic rides. The Flex 27.2mm diameter aluminium seatpost also contributes to its increased level of comfort.
Quick and easy tool-free adjustment of your saddle height using the adjustment lever on the seat post clamp.
HYDRAULIC DISC BRAKES
No matter what conditions you ride in (dry/wet), the Rockrider by Tektro 160 mm double hydraulic disc brakes will come through for you, even in the mud.
Hydraulic brakes deliver more powerful and progressive braking and require less effort applied to the brake levers.
The aluminium brake levers are easy to grip and precise.
27.5" WHEELS WITH DOUBLE-WALLED RIMS AND ALL-CONDITION TYRES
The aluminium wheels are effective and sturdy: 27.5" diameter and double-walled rims. Their diameter is the perfect balance between comfort and performance. With their 28 spokes, they are lightweight, stiff, and Robust. The wide, ROCKRIDER ALL CONDITIONS (60 TPI) 27.5" x 2.1 tyres have side knobs designed for riding on all types of terrain (dry, wet, etc.).
Tubeless Ready 23 mm rims: SCHRADER valves, TUBELESS rim tape, TUBELESS tyres, and puncture-proof liquid to be added.
Platform pedals
The ST 540 bike is delivered with ROCKRIDER FLAT flat MTB pedals, with a wider bearing surface and more present studs for better support of the foot on the pedal.
EASILY TRANSPORT AND STORE YOUR MOUNTAIN BIKE
We added a quick release system for easily removing/reattaching the front wheel.
Our advice: a bike rack is an easy way to transport your mountain bike without dirtying your car.
Accessories
Your ST 540 mountain bike is fitted with a bell, lights, wheel reflectors and pedals.
The frame is compatible with:
-500 chainstay stand (ref. 8302792)
-100 bottle cage (ref. 8049106) and 500 bottle cage (ref. 8358133)
-Mountain bike mudguard set (ref. 8385291)
-100 saddle bag (ref. 8347394) and 500 saddle bag (ref. 8354448)
-500 pannier rack (ref. 8364376)
-100 frame child seat (ref. 8486913 and 8487125), whatever the size
COMFORT & SAFETY
Your bike's fittings (chain, derailleur, brakes, etc.) will adjust over time.
COMPOSITION
composition
Bike frame: 100.0% Aluminium
Tips for storage and maintenance
Storage tips
After washing, rub with a dry cloth to remove all traces of moisture. Store your mountain bike in a cool, dry place, away from corrosive products and salty air.
Restrictions on use
Not suitable for XC, All Mountain, Enduro and BMX.
TESTS AND WARRANTY
Test product
Our engineers always have real riders test all our products in real conditions. These tests round out our lab tests and let us validate all our products before they hit store shelves.
Parts guarantee
Lifetime (frame, stem, handlebar). Availability of spare parts: 2 years.