Colony Rocker Box Mount Kits

23 products — part of all Rocker Box Mount Kits

Colony rocker box mount kits deliver the studs, bolts, spacers and hardware required to correctly secure the rocker box assembly to the cylinder heads on Harley-Davidson Big Twin engines. The rocker box sits above the pushrod tubes and houses the rocker arms that operate the valves — any movement in the mounting hardware compromises the head seal, leading to oil leaks and potential valve-train misalignment. Colony produce their hardware to exact Harley-Davidson specifications with period-correct finishes, making their kits the go-to choice for Shovelhead, Panhead and Evo restorations where authenticity matters as much as function. A complete kit means no running short of the right fastener mid-build and no substituting incorrect hardware that could compromise the head gasket. Iron City Motorcycles, an authorised Harley-Davidson dealer in Leeds, stocks Colony rocker box hardware for classic and modern engine projects alike. Browse the full Colony Rocker Box Mount Kits range below.