520 SX3 - Drive Chain - 120 LinksCaracteristicas: Utilize solid rollers for unmatched performance and durability All chains measure 120 links The SX3 is a high quality performance street chain intended for high rates of speed and stress Unique Duo Glide seal design provides two pockets of lubrication per side allowing the SX3 chain to operate under the harshest of conditions for extensive periods of time Duo Glide seal design reduces heat and friction resulting in wear life that is