Product Colors and Sizes

26" Mountain Bike ST 50 - Black

Regular price:

Sale price: LBP8,920,000.00

Special product, Innovation Special product, New Release Special product, Sale End series Personalize me Eco-design Same day delivery

This 26" mountain bike is designed for getting started with mountain bike rides in dry weather (rides lasting up to 1.5 hours).

Everything you need to stay comfy: the frame in a raised position to keep your back straight, the 80 mm suspension, and the exclusive hammock-shaped ERGOFIT saddle. You'll love how comfy the ST 50 is.

Color: Choose a color

Select a size

Select the size {{ cleanSize }} before adding this product to your cart.

Sale price: LBP8,920,000.00

Regular price:

Product Features

A photo of the 26" Mountain Bike ST 50 - Black in use

Cycling comfort

Enjoy touring: raised position, 80mm suspension, Ergofit hammock saddle


Smooth riding: light aluminium frame, 21 speeds and fast rolling tyres.

Directional control

Steering control: V-Brake calipers, tyres with side knobs

Lifetime warranty

ROCKRIDER offers a lifetime warranty on the frame, handlebars and stem.

Product Reviews

Skip to reviews AR en
1301 reviews

Filtered by translation missing: Loading reviews…
Добър за цената си

Велосипедът го кара приятелката ми. За цената си велосипедът е много добър, засега работи като часовник, въпреки че е каран по сравнително тежък терен в Странджа. Малко е тежичък обаче - около 15кг, но още не съм разбрал от кои компоненти е така. Предстоящ ъпгрейд - по-добра вилка. Забележка - наясно съм с целта на гайката на задното колело, но все пак се колебая дали задното колело все пак не е по-добре да е с автомати.

icon-circle-checkmark Verified purchase
.výkon cena super


icon-circle-checkmark Verified purchase
Super jizda

Predni odpruzeni setri ruce, poradi si i se sterkem a horsim terenem

icon-circle-checkmark Verified purchase

Za dané peníze asi nelze očekávat více. Koupili jsme dvě kola pro děti a těm naprosto vyhovují.

icon-circle-checkmark Verified purchase
Levné kolo, přesto kvalitní

Horsi ovládání přehazování pro dámskou ruku, jde ztěžka. Jinak skvělý výrobek pro jízdu okolo komína.

icon-circle-checkmark Verified purchase

Za tu cenu vypadá super, syn je spokojený, uvidíme jak dlouho vydrží spokojenost.

icon-circle-checkmark Verified purchase
Dobre kolo

Dobre kolo

icon-circle-checkmark Verified purchase

Byl to dárek

icon-circle-checkmark Verified purchase

zatím trochu vržou brzdy, ale prý si to sedne kolo je delší než jsem čekala, takže je celkem problém ho dát do komory dokoupili jsme blatníky dle doporučení na prodejně a moc odstávají

icon-circle-checkmark Verified purchase

Syn používá týden, je spokojený. Bohužel se mu vymazala čísla na řazení 1-2-3


dcera velmi spokojená, zatím vše v pořádku

icon-circle-checkmark Verified purchase

Kolo odpovídá , syn spokojen

icon-circle-checkmark Verified purchase
Nákup kola

Maximální spokojenost

icon-circle-checkmark Verified purchase
Pěkné kolo na prázdniny

Dobrá koupě

icon-circle-checkmark Verified purchase

Dobře kolo za dobru cenu.

icon-circle-checkmark Verified purchase
Skip to reviews

Additional Product informations



  • 100% Aluminium

Which is the right size?

Several sizes available:S: between 1.50m and 1.64mM: between 1.65m and 1.74mL: between 1.75m and 1.84mWeigh more than 90kg? For your comfort and safety, "double-walled" rims (more durable) are recommended. The Rockrider ST100 mountain bike will be better for you.

Unisex frame

The ST 50 S MTB has a UNISEX frame.The ST 50's frame has been carefully designed down to the smallest detail, from the top tube's relatively pronounced slope, to the broad range of sizes (S: 1.55m to L: 1.84m). The ST 50 MTB is not only lightweight, but also UNISEX.To make the most of the improved comfort, the women on the Rockrider team recommend the 500 Women's Sports saddle, which is specially designed for the female form.

A word from the team

The ST 50 mountain bike was fully designed and developed by our passionate MTB team at the B'Twin Village in France (Lille).Recreational mountain bikers told us they want comfort. Based on that, we designed and tested the ST 50 mountain bike, involving MTB riders at every stage.

Lightweight frame

100% aluminium: the frame of the Rockrider ST 50 is made from an aluminium that is both durable and lightweight. This helps make your pedalling more effective.Its sloping geometry makes it easier for both women and men to get on.

Front suspension

The 80 mm front suspension helps you overcome your first obstacles on slightly uneven trails with no worries.Its mechanical spring is a stamp of reliability. And the fork is particularly easy to maintain.To adjust the stiffness? It's very easy using a single dial.

Rear suspension: none

This mountain bike has no rear suspension.It is a "semi-stiff" mountain bike: perfect for beginners launching themselves into their first mountain bike touring rides.Compared to a full suspension mountain bike (with rear suspension), the advantages are clear: the mountain bike is lighter; you spend less energy on flat ground.

Derailleur & drivetrain:

3 x 7 speed chainrings, 21 speeds total!2 easy-to-use grip shifters on the handlebar.Left (chainrings): control ascents/descents.Right (speeds): more precise control over your pedalling.In detail:-Triple-chainring chainset (22/32/42 teeth)+ anti-grease protection.-Microshift FD-M20 front derailleur-Microshift RD-M25 rear derailleur-Microshift MS25 grip shifters with speed indicators-Shimano TZ500 7 cog cassette, 14 to 28 teeth-Large, solid KMC Z51 chain

Handlebars, stem, grips

With a stem that tilts 10° upwards, the riding position of the ST 50 is raised, accessible, and comfortable.In detail:- Aluminium stem with an angle of 10° for maximum comfort- 620mm-wide steel handlebar, for stability and control- "Soft touch" grips for a firm yet soft and pleasant grasp


The ST 50 saddle is welded to prevent any saddle movement as you cycle.Because your comfort is our priority, we've added an exclusive Ergofit saddle that is wider and hammock shaped.Easily adjust the height of your saddle with the 350mm-long, 29.8mm-diameter seat post.

V-brakes with pads

Two V-Brake pads for effective braking.These brakes are composed of callipers that exert more or less pressure on the rim to slow or stop the rotation of the wheels.Thanks to the special design of the ST 50's aluminium brake levers, you only need two fingers to brake.One a year, check how the pads are wearing. If the grooves are disappearing, take your bike to your local store's workshop.

26" wheels & tyres for dry terrain

With this bike's lightweight 26" single-walled wheels, it's easy to get started riding your first MTB trails.The DRY 26 x 2.0 wheels are the most suitable for riding on dry terrain. The central section has low rolling resistance (faster), while the side lugs provide good grip on turns.Want to take on obstacles and do wheelies, skids and small jumps? For your safety, "double-walled" rims (more durable) are a good idea. As you'll find on the ROCKRIDER ST 100.

Platform pedals

The Rockrider ST 50 mountain bike comes with resin mountain bike platform pedals for lower weight and increased safety.If your feet can slide off the pedals when needed, there's less risk of injury.

Transport & storage

We added a quick release system for easily attaching/removing the front wheel.There is a nut at the back to secure the bike and limit the risk of theft. You will need a spanner to remove the rear wheel.Tip: a bike rack is an easy way to transport your mountain bike without dirtying your car.


Your ST 50 mountain bike is supplied with a chain guard, 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)-100 pannier rack (ref. 8400994) and 500 pannier rack (ref. 8364376)-100 frame child seat (ref. 8486913 and 8487125), from size M

Comfort & safety

Your bike's fittings (chain, derailleur, brakes, etc.) will adjust over time. Take advantage of a free servicing within 6 months after purchase. Our technicians will carry out a 13-point check of your bike. Just come to your nearest Decathlon workshop with your Decathlon card and/or receipt.

Product Recently viewed


Size Guide Visual