Yamaha Banshee 350 Top End Rebuild Kit. Fitment: 87-06 Yamaha Banshee 350. This Top End Rebuild Kit Includes: -Brand New Aftermarket Replacement 64.00mm Cylinders (Direct Replacement for OEM Cylinders). Wiseco Forged 64.00mm Pro Lite Piston Kits (Includes Pistons, Rings, Wrist Pin, and Clips). OEM Yamaha Wrist Pin Bearings (93310-316D6-00). Top End Gasket Kit (Includes Head Gasket, Base Gaskets, Reed Valve Gaskets). CCS Motorsports Billet 2-Peice Cool Head Assembly (Includes Lower and Upper Shell, O-Ring Kit, and Stainless Steel Cylinder Head Studs). CCS Motorsports 19cc 64-66mm Bore Domes Other Dome Sizes. This Kit includes everything needed to freshen up your Yamaha Banshee Top End. This Cylinders are Aftermarket Replacements for the OEM Cylinders. Wiseco Pistons are the recommended forged pistons for 2-Stroke Applications. Billet Cylinder Head uses. General Dome Recommendations actual octane requirements depend on elevation, timing, modified port work, etc. : 21-22cc Domes will work with 91-93 Octane Pump Gas, 20cc or Smaller recommend 110+ Octane Race Fuel. Our Cool Head Shells will also work with any Pro Design Spec Domes, but will take different dome o-rings.