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Rockrider ST100 Mountain Bike
Comfort first: CGF frame with raised position, 80 mm suspension, Ergofit hammock saddle with Flex stem, 27.5" wheels (26" in XS") so you stay comfortable as you ride.
See shipping rate at checkout
Final Sale: No returns or exchanges
Free returns
Free pickup
San Francisco, 735 Market St. Options
Select an available color and size to see options.
About this item:
- Cycling comfort: Enjoy: the high position (CGF frame), 80mm suspension, hammock saddle, flex stem
- Efficiency: Progress: light frame, 21 speeds, 27.5” double-walled wheels (26”1 wall in XS)
- Precision: Control your path with tires with side lugs and V-brakes.
- Lifetime warranty:Rockrider offers a lifetime warranty on the frame, handlebars, and stem.
Product Features
Cycling comfort
Enjoy: the high position (CGF frame), 80mm suspension, hammock saddle, flex stem
Efficiency
Progress: light frame, 21 speeds, 27.5” double-walled wheels (26”1 wall in XS)
Precision
Control your path with tires with side lugs and V-brakes.
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Questions & Answers
Look for product information, frequently asked questions, opinions...
Question:
Is the seat adjustable on this bike
Answer:
Yes, the seat can be adjusted in height with a quick release. No tool needed
Question:
What is the weight capacity for Large and XL bikes ?
Answer:
The maximum capacity is 140kg or 300 lbs.
Question:
I could see that this cannot be returned.But if there is a shipping or manufacturer defect how do I handle it...
Answer:
Please contact our customer service team at customer.service@decathlon.com or from our contact form page. To help start your claim we will need the following information: Customer name, USS order number, Item name and documentation (images/video) of the defect you have noted in your item. Please look to provide as much detail as possible, so our team can properly review your case.
Question:
decathlon bike st 100 had a flat tire today. both the tire and the inner tube are more like broken. Where can I find the manual for the Bike to get the information the tire and inner tube for replacement. I saw the tire said: 27.5x2.00 Thanks
Answer:
Indeed you can replace the tire with 27.5 x 2 to 27.5 x 2.5 tires. for the tube I recommend this size. https://www.decathlon.com/collections/bike-tubes/products/btwin-schrader-inner-tube-275-x-19-25-x-48mm-15167?variant=1518952448013
Question:
What is the inside front fork dimension? We're looking a roof racks and we need to know if we need adapters for a 100mm mount
Answer:
The measurement inside the fork, where the hub will be placed, is 100mm.
Question:
Is the bike true to size? For example is the small comfortable for a person at 5’4?
Answer:
Yes it is true to size. A small typically fits a person 5'1" - 5'5". Of course all people are build diffrently i.e long torso or legs - generally to sizing is accurate.
Question:
Does the bike have lights?
Answer:
This bike does not come with lights, they can be purchased seperately. The bike does come with reflectors.
Question:
What size should I order for my son? He is 6' and a half inch.
Answer:
XL will be the right size for him.
Question:
Does the bike come assembled? Does it need any additional parts to be purchased separately (like pedals) to start riding?
Answer:
This bike come 95% assembled, you will need to put on the front wheel and adjust the seat height. It does come with everything you need to ride it, including pedals. But a kickstand and waterbottle cages would be extra.
Question:
It shows shipping is 200$, can i pick it up from store?
Answer:
We do not have store in the U.S. but we offer a free pick up from our warehouse if you are in the Oakland CA area
Question:
Whats the box total weight and dimensions?
Answer:
It depends the model and size of the bike but assume 8" Thick 32" tall and 52" wide, weight boxed is aproxamately 40lbs
Question:
Do you sell the individual wheels? I need a replacement for the back wheel since I don’t have equipment to true the wheel
Answer:
No we do not, I would recomend going to your local bike shop. As they typically stock a wide variety of wheels
Question:
I am between 5'11 and 6'0. Which bike size should i purchase?
Answer:
A large should be a good fit for you
Question:
I am 6’2. Is XL good for me?
Answer:
yes - perfect
Question:
I am 6.2 feet tall. Would XL size be a good fit for me?
Answer:
yes - perfect
Question:
My rear tire went flat, ive tried removing the wheel and it wont budge, most youtube videos, including decathlons showcase rear wheels of different designs than this bike, where can i find a guide on removing it?
Answer:
Make sure you loose both bolts and slide the wheel forward, with the tire completely deflated. The design is standard. A Pro trick is to also shift the bike so the chain is in the small chain ring up front, and smalles gear in the back, putting the least amount of tention on the chain making the wheel much easier to remove.
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Product Customer Reviews
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very good bike
Perfect. I recommend
value for money - perfect for Christmas gift
great product
for now no worries
New mountain bike arrived after 3 days. In excellent condition, no scratches, and serviced by Decathlon. It's really pretty (it looks better in real life than in photos). A great Christmas gift for a teenager (for traveling home > college). There are with a front light and a rear light.
Awesome for the price
Gift
Good price and quality
My son is completely satisfied with this bike. Top bike for a few crowns.
The kid is happy, regarding the solidity we will see in time
Considering the price very good product
Great service, the bike is perfect for forest trips
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Size Guide
Additional Product Information
Composition
Bike frame : 100.0% Aluminum
A unisex sport bike
Available in a variety of sizes (XS: 4'9” ~ XL: 6'7”), the CGF frame is lightweight, comfortable, and versatile
How to choose the size of your bike?
S: 5'1” ~ 5'5” M: 5'5” ~ 5'9” L: 5'9” ~ 6'
Front shock absorber
The 80 mm SUNTOUR XCT front shock absorber is designed for rugged pavements, helping beginners easily cope with sporty bike rides. Mechanical springs are designed to be reliable and easy to maintain.
Transmission system
3 x 7 speed sprocket, 21 speed! Three-chain sprocket wheel (22/32/42 teeth) + grease protection - Microshift front derailleur - Microshift rear derailleur - with speedometer Microshift hand shift lever- 7 gears, 14~28 teeth Shimano sprocket
Horizontal / handle / handle
The ST100 sport bike has a 10° angled handle for a higher operating position and is easy to operate and comfortable.
Storage instructions
After washing, rub with a dry cloth to remove all traces of moisture.Store your bike in a cool, dry place, away from corrosive products and salty air.
Guarantee
Lifetime on frame and rigid fork. 2 years on parts.
Origin
Imported
Superior quality. Unbeatable prices.
For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.