Oversize Exhaust Valve Guide. Fits Big Twin 1984-2004 & Sportster 1986-2004. +.001in. Outside Diameter. OEM Replacement.

* Designed for Harley-Davidson heads

* Use with .420 Viton # AV-V312420B or OEM valve seals

* Manganese-Bronze

* .050" shorter seal area for high lift applications

* Profiled for optimum airflow.

* High temp viton o-ring seal

* Smooth lead-in

* CNC machined

* Guide ID unfinished

* OD = .5635" Std size

* ID = .3090"

* AV-VGRC-3120 Reamer recomended for AV&V guides & valves

* Sold Each.