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 J Precision high flow valve seat profiles are designed in house and are machined on a NEWEN CONTOUR CNC valve seat machine to give you the most accurate and efficient seat job in the industry resulting in more power and durability.. |
 Our high velocity ports and seat profiles are developed using a state of the art Flow Data computerized flow bench. |
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 Advanced Valves & Valvetrain (AV&V) are on the cutting edge of the newest developments for the Harley-Davidson valvetrain and this is why J Precision relies on them. |
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