With sleek lines and carbon bits throughout this bike is ready for enthusiasts and people looking to take their riding to the next level. With an Ultegra groupset and wide tyres it will take on rough roads with ease. Defy Advanced Pro 2. Small (5’2 – 5’7) View our in-depth size guide here. Shimano Ultegra 4iiii, 50/34t – 165mm. Giant SLR 2 Carbon. Giant Contact SL D-Fuse Carbon, 40cm.