Forme Bamford Red 26 Wheeled Kids Alloy Mountain Bike (MTB), 7-Speed Unisex. Forme Bamford Red 26 Wheeled Kids Alloy Mountain Bike (MTB), 7-Speed Unisex. Tyres 26 x 1.50. Tyres 26 x 1.50. Forme Bamford Red 26 Wheeled Kids Alloy Mountain Bike (MTB), 7-Speed Unisex.