FITS ALL POLARIS SPORTSMAN AND UP TO 2016 RANGER 500cc YEARS AND MODELS!

• New aftermarket stock bore cylinder
• Wiseco stock bore forged piston
• Nitrite-coated piston rings
• Chrome wrist pin
• Circlips
• Top-end gasket kit
• MLS head gasket
• Valve stem seals
• Timing chain
• New improved Maxlock heavy-duty head stud kit
• 4135 heat-treated alloy steel
• Rolled threads machining process and black oxide coating
• 12-point flange nuts and washers
• Allen head drive for an easier install
• Higher clamping force creates a more robust, longer-lasting seal
• LIFETIME REPLACEMENT WARRANTY ON STUDS*!