Which chain should I get for my bike with 9 gears on the rear cassette? Connex 9-speed chains work with all 9-speed mountain and road bicycles. The outer plating's proprietary design gives the Connex 9 speed chain the highest shifting performance available and the high performance 9sX is made of high tensile stainless steel, which increases the life of the 9 speed chain by 20 percent. Each 11-speed chains comes with the legendary Connex Link. Connex 9SX Best 9 speed chain on the market The perfect combination against wear and corrosion: stainless steel inner links, high-grade nickel-coated outer plates and Power Pin. This chain is built to last. Connex 9SE Best for eBikes The reinforced design combined with stainless steel inner links make this chain extremely resistant to the high-torque load changes in e-bike drives. Designed for eBikes with 500+ watt motors, bikes with smaller motors can use a standard chain. Connex 9SB Black with Gold Power Pins and Rollers The black color not only adds a unique accent to any bike, but it also protects against corrosion. Stainless steel inner links and high-grade ultra black coated outer plates make this chain extremely resistant to wear and corrosion. Connex 9SG Gold Colored for a Brilliant Look Its high-grade brass coating offers reliable protection against corrosion – and, at the same time, a brilliant look. With an innovative high performance plate, the 9SG provides superior shifting properties. Connex 904 Best entry level nickel plated chain Nickel coated outer plates and a compelling shifting performance make this model an attractively-priced high performance chain. Connex 900 Best Value Precision made in Germany using long-lasting, heat-treated steel and offers smooth, high performance gear changes with Wippermann’s engineered design. The value-priced standard for 9 speed derailer systems.