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Rockrider ST530 Mountain Bike 27.5"

Sale price: $300.00 Regular price: $599.00

Raised position, stem can be raised up to 3 cm, ergonomic saddle: comfort that also yields greater efficiency. 27.5" wheels, double disc brakes, 9 speeds.

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Sale price: $300.00 Regular price: $599.00

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Final Sale: No returns or exchanges

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San Francisco, 735 Market St. Options

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About this item:

  • Light weight 6000 series comfort desgined alumium
  • BTwin U-Fit 80 Fork with adjustable dampner, Front Suspension Fork
  • Microshift Advent 9spd Drivetrain
  • Aero Trail Evo Aluminium double walled Disc brake MTB wheelset
  • Rockrider by Tektro Dual Piston Hydraulic Disc Brakes
  • Ergofit Evo Saddle
  • Lifetime Warranty on the frame
Model: 8629973

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Product Features

A photo of the Rockrider ST530 Mountain Bike 27.5" in use

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Product Customer Reviews

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Rockrider ST530 Mountain Bike 27.5
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I just bought this one...

I just bought the one for men, the other one, I was wrong, it was for women. For the preparation a little disappointed, because I received a text message telling me the bike, is available when I arrived to take the bike, it was not yet ready and there was lots of grease on the seat tube that I I wiped it myself. After riding a short time later, some screws were not tightened correctly which caused me to have a small fall.

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Review tightening and preparation

Good bike overall. However, review the preparation and tightening of the components. RAS for the first kilometers on the road, however during my first outings on the road, the saddle loosened and, worst of all, the front wheel fixing broke! I almost lost the wheel going downhill. Fortunately without consequences. The workshop had, however, had time to prepare: purchase in the morning and receipt of the bike in the evening.

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Not really satisfied

I bought this bike in July and in September I took it to be looked at in the laboratory because it made strange noises when braking. Furthermore, the front wheel, which can come off if removed and reassembled, rubs against the clamp.

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A good wheel at a reasonable price

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Cool. Nothing shakes while driving. Solid and adjustable. I recommend.

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The bike purchased for…

The bike bought for my 14 year old son. On first use, a slight friction was noted on the front wheel. The small problem was corrected by the person from the workshop team, who explained to us how to make the adjustment. Since then my son has been making adjustments himself. Very good bike. My son is very happy with his bike.

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Quite expensive products but…

Quite expensive products but easy to use and light as anything. I recommend taking out Decathlon insurance because it is really very fast and efficient when there is a small problem 😉

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A very nice entry-level bike

A very nice entry-level bike

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Is super

The bike is absolutely bomb, I am delighted with how it drives and how it holds up on the road. Great for me

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Disappointed by rapid wear

After 2 years of my son using this bike, I am very disappointed by the rapid wear and tear. Especially for a €400 bike I’m not talking about tires or pads here. The problems encountered are with the chain, cassette and crankset: - after a year and a half, the chain very often derails. The chain is very relaxed, it works better with 2 fewer links but not miraculous either. - bike taken to the maintenance department to change the chain. - I am told that in addition to the chain, the 9-speed cassette and the crankset should be changed because the teeth are worn. Knowing that the bike has not been overused, only on cycle paths and well maintained. I don't understand how such wear and tear can occur so quickly on these elements if they were of quality.

The bike is very good for the money

(Opinion after riding about 250 km) the bike offers good equipment for this price, hydraulic disc brakes, in my opinion they brake very well, the derailleur shifter works very well and changes gears smoothly (the maximum speed I managed to achieve is 41 km/h) the adjustable shock absorber works very well good factory tires work very well both on gravel and asphalt handlebars are wide but comfortable I highly recommend this bike because for this price I am pleasantly surprised by the quality which is simply very good



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Additional Product Information


Bike frame : 100.0% Aluminum


The RockRider 530 was designed in Lille, France, by a team of experts and cycling enthusiasts dedicated to designing our MTB Sport Touring line.


Rockrider CGF Evo (Comfort Geometry Frame) 6061 aluminum frame for 27.5” wheels. Comfortable seating position thanks to raised steering. Seat is 5 times more flexible than a standard frame with its narrow 27.2 mm seat post. Low bottom bracket: helps keep the mountain bike stable in turns, and makes it easier to place foot on the ground. Open steering angle (69.5°): keeps mountain bike stable while riding. Short rear wheel base: bicycle is easy to turn. LIFETIME WARRANTY on the frame!

Front suspension

B'Twin U-Fit 80 fork, with 80 mm of travel and an innovative fork stiffness adjustment based on the rider's weight (121 to 230 lbs.). Durable thanks to the materials and fabrication processes used. Equipped with a mechanical spring and elastomer stoppers for maximum reliability and minimum maintenance.

Rear suspension

No rear suspension.


9 speed single-chainring


Hydraulic Disc brakes


B'Twin Sport Oversize aluminum handlebar; 660 mm (size S and M), and 680 mm (L and XL). Exclusive B'Twin aluminum stem, 70 mm (size S and M), and 80 mm (size L). Stem can be raised by up to 1.2”, with 5 settings (+0”, +0.3”, +0.6”, +0.9”, +1.2”). Semi-integrated A-headset—better sealed and integrated style. B'Twin Sport handles with grooves, 120 mm long: genuine comfort while riding.


Aero Trail Evo aluminum wheels with double-walled rims: lightweight, stiff, and durable. 27.5” diameter: the best balance of comfort and performance. Designed with 28 spokes to reduce weight while still ensuring rigidity and strength.



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.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


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