Oversize H/Duty Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2003. +.002in. Outside Diameter.
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* Use with .530 Viton valve seals # AV-V312530
* Manganese-Bronze
* .050in. shorter seal area for high lift applications
* Profiled for optimum airflow.
* High temp viton o-ring seal
* Smooth lead-in
* CNC machined
Tech Tips:-
* Guide ID unfinished
* OD = .5645in. +.002in. OS
* ID = .3090in.
* AV-VGRC-3120 Reamer recomended for AV&V guides & valves