Wiseco top bottom end honda 2002-2004 cr250 engine rebuild kit crank / piston 2614cd 66.40 mm ring set. Hassle Free, direct bolt in equipment, no machining or boring. High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power. Wiseco connecting rods are double forged from a dedicated forging and feature shot peening, oil slots, and coated bronze thrust washers.