This invention relates to propylene polymers having multimodal molecular weight distribution and propylene polymerization processes using single site catalyst systems with supports having multimodal particle size distribution comprising one mode peaked at particle size of 3-70 μm, and another mode peaked at particle size of 70-200 μm, the support also having an average particle size of more than 30 μm up to 200 μm and a specific surface area of 400-800 m2/g.