Home Slickdeals Decathlon Rockrider ST100, 21 Speed Mountain Bike, 27.5″, Unisex, Red, Medium –... Slickdeals Decathlon Rockrider ST100, 21 Speed Mountain Bike, 27.5″, Unisex, Red, Medium – $98 By ARCOM - 15 September 2022 53 0 SHARE Facebook Twitter Go to the deal page: Decathlon Rockrider ST100, 21 Speed Mountain Bike, 27.5″, Unisex, Red, Medium – $98