NO DISCOUT ON CUSTOM VALVES

This 2.0mm oversize 46mm intake valve improves the inlet flow and helps fully charge the cylinders.

• It is not absolutely necessary to replace stock seats.  These 46mm valves overlap stock 45.35mm seats about .017."  Leaving this wider margin overlapping the 45 degree seating ring is a very important feature.  Flow at low lift is greatly enhanced for low end power.
• We do stock oversize valve seats for those that want to change seats.  See Part #605-79204-2.

You can leave the exhaust valve at stock diameter of 37mm and use the OEM valves.  For lighter valve weight and flow, use our 1mm oversize 38mm special race valve, PN 605-12751-1.

20 grams lighter!  Stock 110g...this valve 90g.  Reduce valve spring pressure and gain HP!

This is a combination that Jim K recommends.