Z1 pro fluid sqr trainer app the latest trainer has a super efficient resistance head not only does it look fast it simulates road feel allowing you to work harder go faster and gain in strength the head design dissipates heat more efficiently giving you a more consistent performance and giving the equipment longer life the roller operates quietly and smoothly noise is reduced by 55 and tyre wear by 25 30 your bike is fixed in position quickly thanks to the new sqr system improved tr