DECATHLON

ROCKRIDER

27.5" hardtail electric mountain bike e-st 100 - blue

Name: 27.5" Hardtail Electric Mountain Bike E-ST 100 - Blue
Brand: ROCKRIDER
SKU: 2899450
Price: 2900.00 QAR
Availability: OutOfStock

QAR 2,900.00 ٥,٨٧٥.٠٠ر.ق QAR 5,875.00 QAR 5,875.00

Sold out

4.25/5

1902 reviews

4.25/5

1902 reviews

MEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just below your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	XS	S	M	L	XL	2XL	3XL	4XL
Chest (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

BOTTOMS (SHORTS, PANTS, BOARDSHORTS)

Size	XS	S	M	L	XL	2XL	3XL
Hips (cm)	84-86	87-91	92-97	98-104	105-111	112-118	119-126

SWIMWEAR

Size	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	84-87	88-91	92-95	96-103	104-113	114-123	124-135	136-146

WOMEN SIZE GUIDE

How to measure:

Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Chest size: Wrap a tape measure horizontally around the widest part of your chest.
Band size: Wrap a tape measure horizontally around your torso just below your breasts.
Waist size: Wrap a tape measure horizontally around the widest part of your waist.
Hip size: Wrap a tape measure horizontally around the largest part of your hips.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

TOPS (T-SHIRT, PULLOVER, JACKET)

Size	3XS	2XS	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Chest (cm)	76-79	80-83	84-87	88-91	92-95	96-99	100-103	104-107	108-113	114-118	119-123

BOTTOMS (SHORTS, PANTS)

Size	3XS	2XS	XS	S	M	L	XL	2XL	3XL
Hips (cm)	81-85	86-90	91-96	97-102	103-108	109-114	115-120	121-128	129-136

BRA

Size	70A	70B	70C	70D	75A	75B	75C	75D	75E	80A	80B	80C	80D	80E	85B	85C	85D	85E
Chest size (cm)	80-86	80-86	80-86	80-86	86-92	86-92	86-92	86-92	86-92	92-100	92-100	92-100	92-100	92-100	100-106	100-106	100-106	100-106

SWIMWEAR

Size	XS	S	M	M-L	L	L-XL	XL	XL-2XL	2XL
Hips (cm)	90-93	94-97	98-101	102-105	106-109	110-113	114-119	120-125	126-131

KIDS SIZE GUIDE

How to measure:

Clothing size: Stand upright and place your bare heels flush against a wall. Measure the distance between the bottom of your foot and the top of your head.
Head size: Wrap a tape measure horizontally around your head just above your eyebrows.
Hand size: Wrap a tape measure horizontally around your hand, starting from your thumb.
Shoe size: Place your heels flush against a wall. Place a heavy object (such as a book) against your toes. Measure the distance between the wall and the object.

APPAREL

Age	3 Months	6-9 Months	9-12 Months	18 Months	2 Years	3 Years	4 Years	5 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Height (cm)	56-63	64-70	71-76	77-82	83-89	90-97	98-104	105-114	115-124	125-132	133-142	143-152	153-162

SHOES SIZE GUIDE

MEN SHOES

US Size	6.5	7	7.5	7.5	8	8.5	9	9.5	9.5	10	10.5	11	11.5	11.5	12	12.5	13
EU Size	39	39.5	40	40.5	41	41.5	42	42.5	43	43.5	44	44.5	45	45.5	46	46.5	47
Foot Length (in)	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2	10 ^1/2	10 ^3/4	10 ^3/4	11	11 ^1/4	11 ^1/4	11 ^1/2	11 ^1/2	11 ^1/2	11 ^3/4

WOMEN SHOES

US Size	4	4.5	5	5.5	5.5	6	6.5	7	7.5	7.5	8	8.5	9	9	9.5	10	10.5
EU Size	34	34.5	35	35.5	36	36.5	37	37.5	38	38.5	39	39.5	40	40.5	41	41.5	42
Foot Length (in)	8 ^1/2	8 ^1/2	8 ^1/2	8 ^3/4	8 ^3/4	9	9 ^1/4	9 ^1/4	9 ^1/2	9 ^1/2	9 ^1/2	9 ^3/4	10	10	10 ^1/4	10 ^1/2	10 ^1/2

KIDS SHOES

US Size	4.5C	5C	5.5C	6C	7C	7.5C	8.5C	9C	10C	11.5C	12.5C	13C	1	2	2.5	3.5	4	5
EU Size	20	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37
Foot Length (in)	4 ^3/4	5	5 ^1/4	5 ^1/2	5 ^3/4	6	6 ^1/4	6 ^1/2	6 ^3/4	7	7 ^1/4	7 ^1/2	7 ^3/4	8	8 ^1/4	8 ^1/2	8 ^3/4	9 ^1/4

GEAR SIZE GUIDE

KIDS BIKES

Bike size	12"	14"	16"	20"	24"
Kids height (cm)	75-90	90-105	105-120	120-135	135-155
kids height (ft)	2'5'' - 3'	3' - 3'5''	3'5'' - 3'11''	3'11''- 4'5''	4'5'' - 5'1''

ROAD BIKES

Bike size	48 (XS)	51 (S)	54 (M)	57 (L)	60 (XL)
Your height (cm)	135-150	150-165	165-176	176-184	184-195

MOUNTAIN BIKES

Bike size	XS	S	M	L	XL
Your height (cm)	135-150	150-165	165-176	176-184	184-195

SKIS

Ski size	115-130	125-140	130-145	135-150	135-155	145-165	150-170	155-175	160-180	165-185	170-190	175-195	180-200
Your height (cm)	132	137	142	147	152	158	163	168	173	178	183	188	193

SNOWBOARDS

Snowboard size	128-136	133-141	139-147	144-152	149-157	154-162	159-167	160+	160+	160+
Your height (cm)	147	152	158	163	168	173	178	183	188	193
Your weight (lb)	50-55	55-60	60-65	65-70	70-75	75-80	80-85	85-90	90-95	95-100

ACCESSORIES SIZE GUIDE

KIDS GLOVES

Glove size	4 Years	6 Years	8 Years	10 Years	12 Years	14 Years
Hand size (cm)	13.9-14.9	14.9-15.9	15.9-16.9	16.9-17.8	17.8-18.6	18.6-19.5

ADULT GLOVE

Glove size	XS	S	M	L	XL	2XL	3XL
Hand size (cm)	20.3-20.8	20.9-21.4	21.5-22.1	22.2-22.7	22.8-23.4	23.5-24	24.1-24.7

BOXING GLOVES

Glove size	6oz	8oz	10oz	12oz	14oz
Your weight (lb)	77-99	99-143	143-172	172-198	>198

Home Delivery 2- 4 Days

Up to 2-year warranty

Secure Payments

Product description

This electric mountain bike (EAMTB) is designed for all-terrain rides with a decent amount of climbing (hilly routes).

This electric mountain bike is designed for all-terrain rides with a decent amount of climbing. Perfect for discovering the thrill of MTB, the smart electric assistance helps you find your pace.

Cocoa Flavour

Ride up to 50 km on fairly flat ground.

Power

Tackle your first slopes with the wheel motor's 42 Nm torque.

Control

Enjoy touring: raised position, 100mm suspension, Ergofit hammock saddle

Smooth pedalling

Enjoy/relive your first MTB rides: smart help with cadence sensor

Description

This electric mountain bike (EAMTB) is designed for all-terrain rides with a decent amount of climbing (hilly routes).

Motor

Rear motor position (in the hub) 42 Nm torque Pace sensor Max assistance 250W The electrical assistance cuts out above 25 km/h in accordance with EU regulations

Battery

Samsung SDI or LG Capacity: 380 Wh

Display

LCD control screen 3 assistance modes: Eco / Standard / Boost Stats displayed: Stopwatch / Current speed / Average speed / Maximum speed / Distance covered / Total distance / Battery level / Remaining battery range (in km) / Active assistance mode / Reset

Weight

S: 22.2 kg M: 22.3 kg L: 22.4 kg XL: 22.5 kg Net weight without pedals

Frame

ROCKRIDER COMFORT GEOMETRY FRAME in 6061 aluminium with hydroformed tubes Seat tube diameter: 31.6 mm Straight head tube 1 bottle cage mounting point

Drive train

32 T chainring with chain guide MICROSHIFT MS25 8-speed rear derailleur Crank: 175 mm MICROSHIFT TS39 right shifter with speed indicator MICROSHIFT H081 8-sprocket 11-34 T cassette KMC Z7 chain

Suspension

SUNTOUR XCT 30 fork Travel: 100 mm Dampers: 30 mm Axle: QR Format: 9 x 100 mm

Wheels

Rockrider Tubeless Ready (needs tubeless tyres, special Presta valves and tyre sealant) 27.5", compatible with wide tyres: up to 2.5" 23 mm (width between hooks), 28 spokes at the front and 36 oversize spokes at the rear 6-bolt disc Freehub: HG

Brakes

Tektro TKD68 Mechanical disc brakes 1 piston 180 mm front and rear

Riding position

ROCKRIDER SPORT "oversize" 720 mm wide alu handlebar The 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. ROCKRIDER SPORT "soft touch" grips

Saddle / Seat post

ROCKRIDER ERGOFIT EVO saddle Aluminium 31.6 mm seat post

Tyres

ROCKRIDER ALL TERRAIN LIGHT (30 TPI) wide 2.2" tyres

PEDALS

Rockrider 520 Grip resin flat pedals

Accessories

Your mountain bike comes with a bell, lighting, wheel reflectors, and pedals. The frame is compatible with: - front and rear mudguards - stand - bottle cage (on the top tube) - saddle bag - rear pannier rack (to be mounted on a stay or special rack for wide bikes with 150 mm rear wheel axles) - child seat

This electric mountain bike is designed for all-terrain rides with a decent amount of climbing. Perfect for discovering the thrill of MTB, the smart electric assistance helps you find your pace.

Autonomy

Ride up to 50 km on fairly flat ground.

Power

Tackle your first slopes with the wheel motor's 42 Nm torque.

Control

Enjoy touring: raised position, 100mm suspension, Ergofit hammock saddle

Smooth pedalling

Enjoy/relive your first MTB rides: smart help with cadence sensor

This electric mountain bike (EAMTB) is designed for all-terrain rides with a decent amount of climbing (hilly routes).

Motor

Rear motor position (in the hub) 42 Nm torque Pace sensor Max assistance 250W The electrical assistance cuts out above 25 km/h in accordance with EU regulations

Battery

Samsung SDI or LG Capacity: 380 Wh

Display

Weight

S: 22.2 kg M: 22.3 kg L: 22.4 kg XL: 22.5 kg Net weight without pedals

Frame

ROCKRIDER COMFORT GEOMETRY FRAME in 6061 aluminium with hydroformed tubes Seat tube diameter: 31.6 mm Straight head tube 1 bottle cage mounting point

Drive train

32 T chainring with chain guide MICROSHIFT MS25 8-speed rear derailleur Crank: 175 mm MICROSHIFT TS39 right shifter with speed indicator MICROSHIFT H081 8-sprocket 11-34 T cassette KMC Z7 chain

Suspension

SUNTOUR XCT 30 fork Travel: 100 mm Dampers: 30 mm Axle: QR Format: 9 x 100 mm

Wheels

Brakes

Tektro TKD68 Mechanical disc brakes 1 piston 180 mm front and rear

Riding position

Saddle / Seat post

ROCKRIDER ERGOFIT EVO saddle Aluminium 31.6 mm seat post

Tyres

ROCKRIDER ALL TERRAIN LIGHT (30 TPI) wide 2.2" tyres

PEDALS

Rockrider 520 Grip resin flat pedals

Accessories

This electric mountain bike is designed for all-terrain rides with a decent amount of climbing. Perfect for discovering the thrill of MTB, the smart electric assistance helps you find your pace.

Autonomy

Ride up to 50 km on fairly flat ground.

Power

Tackle your first slopes with the wheel motor's 42 Nm torque.

Control

Enjoy touring: raised position, 100mm suspension, Ergofit hammock saddle

Smooth pedalling

Enjoy/relive your first MTB rides: smart help with cadence sensor

This electric mountain bike (EAMTB) is designed for all-terrain rides with a decent amount of climbing (hilly routes).

4.25/5

1902 reviews

Your reviews

1000 mile review - love it.

This bike is fantastic. Completed 1000 miles now and the battery and motor are holding up great. We use this on everything from cycle paths to green and blue forest trails and single track. We use it to pull a tow along for nearly all of those 1k miles so it’s pulling 2 people! I have just replaced the bottoms bracket, crank, chain and rear cassette all on cost me about £100. But it’s to be expected after these miles and pulling a kid on a tow along. My mates have similar e bikes bought from Halfords and Amazon - their bikes were 25-30% more expensive and have been back to the shop 3 and 2 times respectively. So this is a winner in all cases.

benjamin | 27 May 2024 |

Didn't last as it should

I've had this bike almost 3 years and completed only 1400 miles on it. On holiday in Germany, pin snapped off the controller unit, breaking the battery too. Visited Decathlon in Baden Baden to be told they couldn't get the parts anymore. Basically left with scrap as I can't source parts. Shame it was a tidy enough bike until this happened.

Christopher | 13 May 2024 |

Rockrider e st 100

Great bike for the money , bought for my wife so she could join in on the MTB trails , Manages blue trails with ease although I did upgrade the manual disc brakes to hydraulic , which was relatively a cheap and easy upgrade.

Jon | 24 April 2024 |