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Side by side view of the intake
valve. New for the 99 race season is the valve on the left. It's about 1mm oversize and
made of Stainless steel. It's difficult to tell in the photo but the new valve does not
have the deep dish or cup in the center like the older valve, this should help keep
compression up. Old valve dia. 24.9mm |
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A view of the new valve installed, exhaust valve is a stock Honda part. |
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A view of a stock combustion chamber with stock size valves. |