SRAM offers the PG-1050 as a compliment to their Apex group and it offers a huge range of gearing options. Part of SRAM’s Wider Faster Lighter system that allows a double-crankset to replace most heavier and more complicated triple systems. Aluminum spider carries largest cogs and nickel-plated steel offers long life while Powerglide ramped teeth offer smooth shifting. Weighs 303 grams.