![Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/rockrider/2021/29-full-suspension-carbon-mountain-bike-xc-900-s/thumbs/1000/51f71.jpeg)
Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes
![Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/rockrider/2021/27.5-full-suspension-mountain-bike-st-540-s/thumbs/1000/f8378.jpeg)
Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes
![Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes Compare: 2021 ROCKRIDER 27.5" Full Suspension Mountain Bike ST 540 S vs 27.5" Full Suspension Mountain Bike ST 900 S - / vs 29" Full Suspension Carbon Mountain Bike XC 900 S – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/rockrider/2021/27.5-full-suspension-mountain-bike-st-900-s/thumbs/1000/ce063.jpeg)