Fastroad slr gives you the perfect balance of road bike speed and city bike versatility its built on giants ultra lightweight aluxx slr aluminium frameset which is designed with an efficient rider position for a smooth fast ride quality featuring disc brakes and rack mounts its great for commuting fitness riding and other on road pursuits frame aluxx slr grade aluminium fork advanced grade composite alloy overdrive steerer drivetrain shimano tiagra 20 speed brakes shimano