Quarq's ShockWiz drastically improves ride quality and brings suspension tune dynamics into clearer focus for a large portion of the cycling population, us included. Arriving as a rather unassuming little square, ShockWiz houses an internal pressure sensor and microprocessor that pair to run diagnostics on your suspension while you ride. The system attaches to your air-sprung shock or fork's Schrader valve with a sleek hose that allows ShockWiz to collect 100 pressure readings per second for instant, continuous analysis to determine how well your suspension setup in working for you.