Made in the U.S.A. by SilverHorse Racing. Pulleys included are the Silverhorse Racing S197-1325G, S197-1300, and two of the S197-1355. The SilverHorse Racing Billet Idler Pulleys are made from solid 6061-T6 aircraft aluminum billet alloy, and are machined down to an exact fit for your ride.
