For Hi-Compression engines
****Flat faced valves reduce chamber volume approx. 1cc.!****
30mm(Stock), or 31mm( 1mm Oversize) Head Diameter
5.5mm. (Stock) Stem Diameter
104.70mm. (Stock) length
(1 Single intake valve, for a set order 8pcs.)
For Hi-Compression engines
****Flat faced valves reduce chamber volume approx. 1cc.!****
30mm(Stock), or 31mm( 1mm Oversize) Head Diameter
5.5mm. (Stock) Stem Diameter
104.70mm. (Stock) length
(1 Single intake valve, for a set order 8pcs.)