S&S MANIFOLD FOR STOCK CV, MIKUNI HSR & SCREAMIN' EAGLE CARBURETORSStronger than stock precision cast aluminum manifold for use with a stock Keihin CV, Mikuni HSR45 or Screamin' Eagle CV carburetor on Evolution Big Twin 1990 1999 or Twin Cam 1999 2006. Made by S&S. Note: These manifolds must be installed with special S&S manifold to cylinder head seals, which must be ordered separately.