BOX Three Prime 9 Chain - Silver Color-Army 40% reduced pressure peaks with

40% reduced pressure peaks with dual conic spring system provides for super comfort in a relaxed riding postion

3 clicks of high-speed compression adjustment

model 40-Series lower S

Featuring six solid and flash modes including a prominent 15-lumen Day flash Mode these lights ensure visibility in diverse conditions

BOX Three Prime 9 Chain - Silver Color-Army 40% reduced pressure peaks withPrime 9 Technology for wide range without complexity Wider chain is strong and durable 9 speed chain has outer width of normal 9 speed but a narrower inner width to match 10 11 speed narrow wide chainrings. Compatible with most 10, 11, and 12 speed chainrings as well as BMX 3 32 inch chainrings and cogs 8 speed chain has outer width of normal 8 speed but a narrower inner width, optimized for use with Box Four Narrow Wide chainrings 3rd party web sales