GSC Power Division manganese bronze exhaust valve guide sets for Honda K-Series VTEC K20/K24 use a 6mm ID stopper-style design sold as a set of eight. Intended for applications calling for replacement exhaust guides, these bronze guides are specified for the K-Series engines listed and include the stopper-style fit noted in the description for accurate installation where that ID is required.
GSC P-D Honda K-Series VTEC K20/24 Manganese Bronze Exhaust Valve Guide Stopper Style 6mm ID - SET 8