900 градустық айналу: Скейтбордтың ең қиын трюгі

2 1/2 revolution aerial spin performed on a skateboard ramp

The 900 is a 2½ revolution (900 degrees) aerial spin performed on a skateboard ramp. While airborne, the skateboarder makes two and a half turns about their longitudinal axis, thereby facing down when coming down. It is considered one of skateboarding's most technically demanding tricks.

On June 27, 1999, Tony Hawk, one of the most successful vertical pro skateboarders in the world, landed the 900 at X Games V after ten failed attempts. It was past regulation time but, as one announcer said, "We make up the rules as we go along. Let's give him another try." Other skaters protested, but Hawk continued. Hawk twice landed on his board, but it flew out from under him. When he finally completed the trick, his arms windmilled and his hand barely grazed the ramp. Nonetheless, he rode away. In his book, the 900 was the last on the wishlist of tricks Hawk had written a decade earlier. Other tricks on the list included the ollie 540, kickflip 540, and varial 720. In a 1999 interview, Hawk said he does not have "any desire to spin further." In 2011, Hawk was still able to land the 900, and posted a video of the trick via his Twitter account, stating, "I'm 43 and I did a 900 today." On June 27, 2016, Hawk was again successful.

A number of opinions exist about pre 1999 900s. The most prominent of these is the argument that Danny Way landed the 900 in 1989, and it appears in an early Santa Cruz film. In 1999, Tony Hawk said:

The 900 can also be attempted on a BMX bike, skis, snowboard, inline skates or a scooter. BMX rider Mat Hoffman was the first person to successfully land the 900 on film at a competition in Canada in 1989. In 2002 at X Games VIII, Hoffman took the trick a step further by landing a no handed 900. BMX rider Simon Tabron's signature trick is the 900. In the 2007 at X Games XIII, Simon Tabron landed the first back to back 900s on a bike. Because the gear of snowboarders, skiers, and inline skaters is affixed to their feet, the 900 is not considered to be a difficult trick for professionals in those sports and is performed comparatively often. 1620 and 1800 degree spins have been landed on skis, a 1620 has been performed on a snowboard as well as on inline skates, and a 1080 on BMX and on scooter.