– “Ribbed” design is directly inspired by the 1942 Flathead cylinder heads

– Fits ’86-’03 Evolution XL models

– EMD / RIBSTERS rocker box covers install in place of your OEM rocker box covers and will radically change the look of your engine

– Sold by the pair

– Made from die cast aluminum with CNC-milled gasket surfaces

– Dimensions and tolerances are identical to the OEM part for a perfect fit

– OEM Mounting Hardware reusable

– Seal Kit not included, please order separately