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Decathlon Rockrider ST520 24-Speed Mountain Bike · Dark Grey/Neon Green · XL

Decathlon Rockrider ST520 24-Speed Mountain Bike · Dark Grey/Neon Green · XL

20% off
Color: Dark Grey/Neon Green
Wheel size
27.5 in
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Product details

The Decathlon Rockrider ST520 24-Speed Mountain Bike is an entry-level hardtail mountain bike designed for beginner trail riders. It's a great choice as a first bike for riders and can be used for commuting as well as riding off road. With pannier rack compatibility, and room for a saddle bag, the Decathlon Rockrider offers riders more than a bit of carrying capacity.  

Key Features:

  • Suspension Fork – The fork's coil provides spring dampening for rough terrain and helps smooth the ride, which is especially important off road. Although there is no suspension in the rear, the front suspension is adaptive and perfectly reliable.
  • Disc Brakes – Powerful disc brakes provide maximum stopping power in all conditions. Along with this, the levers and MX5 calipers provide a good balance of performance and value at this price point.
  • Lowered Seatstays – The frame's seatstays are lowered, leading to greater compliance and a more comfortable ride.
Bike type
Bike frame material
Age Group
Unisex, Men's, Women's
Rockrider CGF Evo (Comfort Geometry Frame) 6061 aluminum frame for 27.5" wheels, low bottom bracket, open steering angle (69.5°) for riding stability, short rear wheel base for an easy turn.
Brake type
Mechanical Disc
Tektro aluminum brake levers, front and rear Hayes MX5 mechanical disc brake calipers
Number of gears
Suspension type
Front suspension
B'Twin U-Fit 80 fork, equipped with a mechanical spring and elastomer stoppers.
B'Twin Sport Oversize aluminum handlebar, 26.7 inches
B'Twin All Terrain Dry 27.5" x 2.0 fast rolling tires with side lugs to provide traction in turns.
Fork travel (mm.)
80 mm
Model year
Decathlon Rockrider ST520 24-Speed Mountain Bike · Dark Grey/Neon Green · XL
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Top reviews
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Rutledge S
Rutledge S
Verified cycling expert
Reviewed Jul 13, 2022

Entry level mountain biking, commuting and casual rides.