Complete engine built to the highest standards by Patrick Racing. This 107” motor is a 4” bore with a 4.25” stroke. Motor includes fully CNC ported PR Billet Heads and PR Billet Cylinders, custom PR cases, in-house dynamically balanced crankshaft, custom PR-3 cam (608 lift/266 dur), 42mm Mikuni flat slide carburetor, custom PR billet cam cover, custom PR billet tappet blocks, custom PR billet oil pump, Sumax billet push rod covers, billet rocker boxes, custom 10.25:1 PR/JE pistons, dual fire ignition and more. All motors are polished and ready to bolt into the frame. All parts are of the highest quality and American made. Each motor is built to order to customer specifications. Additional options can be added (see options at the bottom of the motor page). To ensure your motor is built to customer specifications, customer service assistance is required in helping to place your motor order.
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