WEIGHT
S: 15.4 Kg
M: 15.5 Kg
L: 15.6 Kg
XL: 15.8 Kg
MIXED FRAME
With a very steep top tube and a very wide size range (from S: 1m55 to XL: 2m00),
the EXPL 50 frame is MIXED.
LIGHTWEIGHT, COMFORTABLE AND PLAYFUL FRAME
It's not always easy to get a good position on your mountain bike. Our designers have come up with a brand-new frame that's easy to straddle.
This 100% aluminum CGF (Confort Geometry Frame) is both comfortable and easy to handle. The inclination has been designed to keep your back more upright, while the rear chainstays have been shortened to ensure agility when cornering.
derailleur and transmission
3 chainrings with 7 speeds, for a total of 21 gears!
2 easy-to-use twistgrips on the handlebars.
Left (chainrings): you manage the up/down motion.
Right (gears): you adapt your effort more precisely.
In detail:
-Triple chainrings 22, 32 and 42 teeth + protection / grease
-Front derailleur MICROSHIFT FD-M20
-Rear derailleur MICROSHIFT RD-M25
-Turnable grips MICROSHIFT MS25, speed indicators
-Cassette 7 sprockets 14 to 28 teeth WHEELTOP or SHIMANO TZ500
-Large, solid chain KMC Z51
FRONT SUSPENSION
The 80 mm front suspension allows you to tackle your first obstacles with complete peace of mind on slightly uneven trails.
Its mechanical spring is a guarantee of reliability. Above all, the fork is easy to maintain.
27.5" WHEELS and TIRES FOR DRY TERRAIN
The ST 100's wheels are forgiving and robust, with 27.5-inch, 28-spoke double-wall rims. Take on your first obstacles without fear: small stones, roots, holes and bumps!
Because the first rides take place on dry terrain, this mountain bike is equipped with DRY 27.5 x 2.0 tires. Their performance is optimized thanks to a highly rolling central section, while their lateral studs ensure good grip when cornering.
V-BRAKE SHOE BRAKES
Brake efficiently with 2 V-Brake brake pads. These brakes consist of 2 calipers fitted with brake pads that exert varying degrees of pressure on the rim to slow or stop wheel rotation.
Thanks to the special design of the ST 100's aluminum brake levers, you only need two fingers to brake.
Check brake pad wear once a year. If striations disappear, visit your local workshop.
HANDLEBARS, STEM, HANDLES
With its 10° upward-angled stem, the ST 100 mountain bike's cockpit is elevated, accessible and comfortable.
In detail:
-Aluminium stem, length 90 mm, with a 10° angle for maximum comfort
-Steel handlebars, 620 mm wide, for stability and control
-Handles in "soft touch" material, for good grip and a soft, pleasant feel.
SADDLE
The ST 100's welded saddle clamp prevents any saddle movement.
And because your comfort is our top priority after safety, we offer you an exclusive, wider ERGOFIT saddle with a hammock-shaped profile.
Easily adjust your saddle height with the FLEX steel stem, length 350 mm or 400 mm (depending on size). Its reduced diameter of 27.2 mm gives your seat a natural flexibility that's 30% greater than a conventional solution.
FLAT PEDALS
The ROCKRIDER ST 100 mountain bike comes with flat, hard resin mountain bike pedals for added lightness and safety.
If your foot slips off the pedal, you'll be less likely to injure yourself.
TRANSPORT and STORAGE
We've added a quick-release system for easy removal and installation of the front wheel.
At the rear, a nut secures the bike to reduce the risk of theft. An open-end wrench is needed to remove the rear wheel.
Our tip: a bike carrier is a simple way of transporting your mountain bike without dirtying your car.
ACCESSORIES
Your ST 100 MTB comes complete with chainring protector (to avoid soiling your outfit), bell, lights, wheel reflectors (reflectors) and pedals.
The frame is compatible with:
-Base stand 500 (ref. 8302792)
-Tank holders 100 (ref. 8049106) and 500 (ref. 8358133)
-Mountain bike mudguard kit (ref. 8385291)
-Saddle bags 100 (ref. 8347394) and 500 (ref. 8354448)
-Luggage rack 500 (ref. 8364376)
-Child seat POLISPORT GROOVY Fixation Cadre (ref.8385622), from size S
COMFORT and SAFETY
Your bike's equipment (chain, derailleur, brakes, etc.) will adjust. Take advantage of free servicing within 6 months of purchase. Our technicians will check 13 points on your bike. Go to your nearest DECATHLON workshop with your DECATHLON card and/or receipt.
WHAT SIZE MOUNTAIN BIKE TO CHOOSE?
Several sizes are available:
S: between 1.55 m and 1.64 m
M: between 1.65 m and 1.74 m
L: between 1.75 m and 1.84 m
XL: between 1.85 m and 2.00 m
To adapt the mountain bike to your size and morphology, here's our advice:
1/ Sitting on the saddle, touch the ground with your toes.
2/ To adjust the saddle, bend your knee slightly with your foot on the pedal in the down position.
3/ If you're hesitating between two sizes, choose the larger one.
NON-CONTRACTUAL PHOTOS
Regarding the 14 to 28-tooth 7-sprocket cassette, the photos or videos on the bike's description sheet show a SHIMANO TZ500 cassette. However, due to supply difficulties, the bike can be fitted with an equivalent WHEELTOP cassette.
