Bikeman Performance POLARIS PATRIOT 850 - BIG BORE ENGINE KIT (900CC)

Patriot 900 Big Bore top end kit fits all Patriot 850 models 195-215 horsepower! (Depending on exhaust configuration) Huge mid-range and torque gain! Hard to keep the skis on the ground! Comes with factory Polaris 9R pistons  A Torque Link tune, BMP performance manifold, Fatt Azz Pipe & clutching changes are required. For best results, purchase our complete big bore. Turnaround time can vary from 1-15 business days for this kit depending on if core cylinders are in stock. The normal turnaround time is between 3-5 business days. Must send in cylinders and exhaust valves (blades only), unless you select to purchase outright. Recommended Options: ECU tune (Torque Link or Hard Flash), Performance Manifold, Fatt AZZ Pipe & Clutch Kit.  If you are just ordering the big-bore without the performance kit we can not help you with tuning Use this Work Order Form when sending parts so shipping/receiving knows how to identify them. Cylinder Core Exchange Options (see drop-down menu): If i