Description & Size Guide
                        Piston Kit for 4 StrokeEnhanced piston pin oiling slots, radial boss machining, and annular grooves for improved wrist pin lubrication Lightweight piston with a tight piston wall clearance for a quieter running engine Skirt coated for reduced friction and improved break in performance Ring land treatment for improved ring seal and oil control Double bridged forging design where noted Kit includes piston, rings, wrist pin and pin locks Two ring design.
Kit Includes:
• Piston #8581DB
• Ring Set #890XSY-3
• Wrist Pin #WP038-SP
• Retaining Clips #CW20KTM EXC 450 RACING 2003-2007 Polaris OUTLAW 450 MXR 2009-2010 Beta RR 450 2006-2009 
                      
                    This item fits to following bikes.
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