Equipped with J Precision heads, Jim Proulx were the team to beat in the 200Canadian Thunder
headsid Range Power! At the same time the package was also extremely reliable, enough Precision did for our team made an headsid Range Power! At the sametime e package was also extremely reliable, enough for 5 p
J Precision demonstrated again that they are the team to beat when it come to cylinder head work if you're racing to win. For fast acceleration, power where you need it, and reliability there are none better. When you're on the throttle it's smooth as glass, no jerky bursts of speed. Valves are lightweight and the porting is a true work of art. 7 podium finishes, never less than second position for Jim Proulx # 1 plate holder for the 2008 Canadian Thunder Series and 3 podium finishes for me. Nobody else will work on my motorcycle heads
Dan Tompson -builder/racer
Michael Leon
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