![Compare: 2021 ROCKRIDER 27.5" Mountain Bike ST 900 S vs 27.5" MTB ST 530 S vs 27.5" Full Suspension Mountain Bike ST 540 S – 99 Spokes Compare: 2021 ROCKRIDER 27.5" Mountain Bike ST 900 S vs 27.5" MTB ST 530 S vs 27.5" Full Suspension Mountain Bike ST 540 S – 99 Spokes](https://d2yn9m4p3q9iyv.cloudfront.net/rockrider/2021/27.5-mountain-bike-st-900-s/thumbs/400/28eb2.jpeg)
Compare: 2021 ROCKRIDER 27.5" Mountain Bike ST 900 S vs 27.5" MTB ST 530 S vs 27.5" Full Suspension Mountain Bike ST 540 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 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](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
![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 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](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
![Compare: 2021 ROCKRIDER 27.5" Mountain Bike ST 900 S vs 27.5" MTB ST 530 S vs 27.5" Full Suspension Mountain Bike ST 540 S – 99 Spokes Compare: 2021 ROCKRIDER 27.5" Mountain Bike ST 900 S vs 27.5" MTB ST 530 S vs 27.5" Full Suspension Mountain Bike ST 540 S – 99 Spokes](https://99spokes.com/api/og/compare?i=%2Frockrider%2F2021%2F27.5-mountain-bike-st-900-s%2Fthumbs%2F400%2F28eb2.jpeg%2C%2Frockrider%2F2021%2F27.5-mtb-st-530-s%2Fthumbs%2F400%2Fae5fe.jpeg%2C%2Frockrider%2F2021%2F27.5-full-suspension-mountain-bike-st-540-s%2Fthumbs%2F400%2Ff8378.jpeg&token=13e3a1824b9b175a88bdfb699a778701d7ec6ff967971e02fc38cedeace8c0e4)