A special chain for TRACK is very hard to find, features like: extreme stability, high strength, minimum power loss, and high rigidity are necessary to win the race. All these goodies are combined in our D-101, named after the famous Japanese race: DEVIL. It's SL-X ® technology, which keeps the grease where it belongs, ensures maximum durability and minimum maintenance, while the chain's construction is the most rigid for minimum power loss due to stretching.