Bike carrier has a single layer deck, which could carry 2 bikes (total loading capacity 22 kg) and includes a single layer Polycarbonate deck with 4 TreeFrog vacuum cups, each rated to hold 110 kg, 2 fork mounts and 2 robust, Velcro-closure rear wheel holders. Elit 2 is recommended to carry road, gravel, triathlon, cyclocross bike. No mountain and e-bike!! The rack’s universal fork mounts securely hold either 2 standard 9 mm quick releases or 15 x 100 mm forks, no need to switch out fork mounts! It is also available with 12 x 100 mm thru axle fork mounts, for road/triathlon disc brake bikes. Not available with 15 x 110 mm or 20 x 110 mm thru axle and Lefty fork mounts! The Treefrog Elite 2 is a great choice for couples with small cars or for anyone who likes to travel to rides or races with another rider.