Wiseco Performance Oversized Piston KitPart Number: 4487M07700 These kits contain everything you need to complete your piston repair, the first time High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power. Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy. All Piston Kits are precision crafted and forged in the USA Wiseco's Piston Kits are offered for nearly every popular application in the powersports market. These kits contain everything you need to complete your piston repair, the first time. High quality parts specifically chosen by us to match our forged pistons are included in this kit for easy one stop shopping. 2-stroke kits feature our Pro-Lite pistons that are CNC machined for optimal cam shape and profile for peak HP and service life. 4-stroke kits feature a race-ready dome finish with smooth edges for improved combustion flow. Horizontal slot-pin oiling reduces friction and provides scuff resistance, along with a pressure seal groove for maximum ring seal. 4-stroke race applications feature Wiseco's Armor Glide skirt coating to provide reduced friction and noise to contribute to increased horsepower. Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Super-bike, and more. Displacement: 1040cc Bore-Standard: 75.50mm Bore-Actual: 77.00mm Bore-Oversize: 1.50mm Stroke: 55.85mm Compression Ratio: 12:1 Product Details Tire Diameter Speed Rating Load Rating Wall Construction Tire Tube Type Rim Size Product Line Wiseco Piston Kit Part Number 4487M07700 Fitment Type Unit Sale Qty Each Style Cylinder Boring Required Material Color Size 77.00mm Finish Position Functional Length Cable Sleeve Length Cable Sleeve Travel Driver Seat Length Passenger Seat Length Driver Seat Width Passenger Seat Width Piston/Cylinder Size 77.00mm Piston Size Added 1.50mm Cylinder Stroke Volume 55.85mm Final Engine Displacement 1040cc Exhaust Configuration Muffler Size Muffler End/Tip Style Windshield Height Windshield Width Handlebar Diameter Ca ARB Compliance Non CARB Complaint CARB Compliant Product Disclaimer Items Included Fitments 1998 Yamaha YZF1000 1997 Yamaha YZF1000 1996 Yamaha FZR1000 1995 Yamaha FZR1000 1994 Yamaha FZR1000 1993 Yamaha FZR1000 1992 Yamaha FZR1000 1991 Yamaha FZR1000 1990 Yamaha FZR1000 1989 Yamaha FZR1000