Classic 50.4 BCD chainrings, such as the TA, Stronglight 49D, and others, are still in demand among randonneurs and cyclo-tourists. These chainrings offer enormous versatility, as they fit chainrings from 28t to 62t. They are also lightweight and have narrow Q-factors, or track widths. While the Grand Cru 50.4 Crankset looks like a classic, we have made several important improvements. They are cold-forged from 7075 aluminum alloy. The chainrings are thicker, so they
