While everyone else keeps adding more and more gears, the Box Four Prime 9 Groupset takes a different approach. The engineers at Box decided that sometimes simple is better so they developed a groupset with a wide ratio range over only 8 cogs. The benefit is that fewer gears reduce the chain angle on the low end; making the chainline more direct across the whole range; improving component longevity and power transfer. The Prime 9 chain is compatible with Box Four 8 Speed Wide/Narrow Chainrings. Features: Prime 9 technology Treated Protection Box Four 8 Speed Wide/Narrow Chainring Compatible Durable hardened solid pins Specifications: Speeds: 8 Speed Links: 116 Chain Width: - Chain Connector: Quick Link Pin Type: Solid Color: Raw Weight: 364g Included: Quick Link master link