Decathlon Rockrider ST50 Aluminum Mountain Bike, 26", Black, Medium

MIXED FRAME
 

The frame of the ST 50 mountain bike is MIXED.
 

Studied down to the smallest detail, with a fairly marked sloping (inclination of the upper tube), over a fairly wide range of sizes, the frame of the ST 50 mountain bike is not only light, it is also MIXED.
 

LIGHT FRAME

• 100% aluminum:the frame of the ROCKRIDER ST 50 mountain bike has been designed in aluminum to combine strength and lightness. Thus, your pedaling is more efficient.
• Its "sloping" type geometry makes it easier to step over for both men and women.

FRONT SUSPENSION

• The 80mm front suspension lets you overcome your first obstacles with peace of mind on slightly uneven trails.
• Its mechanical spring is a guarantee of reliability. Above all, the fork is easy to maintain.
• For hardness adjustment It is very easy thanks to a simple wheel. 

REAR SUSPENSION:NONE

• This mountain bike has no rear suspension.
  It is a so-called "semi-rigid" mountain bike:ideal for starting out and getting started on your first mountain biking tours.
• Faced with a "full suspension" mountain bike (with a rear suspension), the interest is simple:the mountain bike is lighter; you lose less energy on flat ground. 

DERAILLEUR & TRANSMISSION

• 3 plates of 7 speeds, that is to say 21 speeds!
• 2 rotating handles that are easy to handle.
• On the left (trays):you manage the ascent / descent.
•  Right (speeds):you adapt your effort more precisely.
• In details:
• -Triple chainring 22, 32 and 42 teeth + protection against grease
• -MICROSHIFT FD-M20 front
• Derailleur -MICROSHIFT RD-M25
• Rear derailleur -MICROSHIFT MS25 revolving handles, with speed indicators
• -SHIMANO 7-pinion cassette 14 to 28 teeth TZ500
• -Wide and solid chain KMC Z51 

SADDLE

• The saddle attachment (welded) of the ST 50 prevents any movement of the saddle during your ride.
• And because your comfort is our priority, we offer you an exclusive ERGOFIT saddle, wider, with a profile in the shape of a "hammock".
• Easily adjust your saddle height with the 350mm long, 29.8mm diameter steel MTB seat post.

V-BRAKE SKATE BRAKES

• Brake effectively thanks to the 2 V-Brake type pad brakes.
• These brakes are made up of 2 calipers equipped with pads which exert a more or less strong pressure on the rim to slow down or stop the rotation of the wheels.
• Thanks to the specific design of the ST 50's aluminum brake levers, only two fingers are sufficient to brake.
• Check the wear of the pads once a year. If the streaks disappear, go to your store's workshop. 

26 "WHEELS & DRY TERRAIN TIRES

• With its lightweight 26-inch single-wall wheels, you can easily get started on mountain biking trails.
• DRY 26 x 2.0 tires are the most suitable for hiking on dry terrain. The central part is very rolling, while their side crampons provide good grip in turns.
• Obstacles, wheelies, skids, small jumps For your safety, wheels with "double wall" rims (more resistant) will be more suitable.