(Non-UK Stock 7- 14 Working Days Delivery) ADO ACCESSORY SUSPENSION FORK OF ADO AIR 20SATTENTION Suitable for ADO AIR 20 AIR20S The front fork on the Air 20 is non suspension. If you replace it with the suspension front fork from the Air 20S, the front wheel will sit higher than the rear wheel when folded, which means the bike may not stand steadily once folded. If you do not mind the bike being unstable when folded, then you can replace it.