The Arnott adjustable QA1 Air Suspension System has been custom designed to give the rider more control, comfort, and ride height than ever before. Arnott delivers the best to riders as only they know how. At the core of this impressive system they used an 16-way adjustable QA1 racing shock, which is custom machined from 6061 billet aluminum. This custom mono shock design gives the rider more installation flexibility than any other system. This system is NOT an air cylinder, but an actual air spring, complete with compression and rebound capability. It delivers a superior ride and better stability during acceleration and cornering.