Zdroje
https://www.motionvideo.co.nz/images/frestyle1.jpg
https://www.bike-discount.biz/BILDER_2012/601B/601B-KS-CYCLING-FREESTYLE-BMX-TWENTYINCH-ROT-L9.jpg
https://im9.cz/sk/iR/importprodukt-orig/4d3/4d3bc5d5b9d2afcf91cdc8c107ef97b2.jpg
https://images.mtbiker.sk/biky/big/CAM00458_52d15ec5b9da2.jpg
https://www.coolbike.sk/images/uploads/0016455_scott_foil_team_issue_22_speed_racing_road_bike_2013.jpeg
https://www.mtbiker.sk/forum/resources/image/124139
https://www.mountainbike.estranky.sk/img/picture/7/untitled.png
https://www.jasna.sk/uploads/pics/giant-glory-2010-dh-bike.jpg