Brand New Standard Bore Top End Rebuild Kit. Includes a new 66mm aftermarket cylinder. Includes a new 66mm aftermarket cylinder head. Includes a new standard bore 66mm Wiseco piston kit (piston, rings, wrist pin, circlips). Includes a high-quality top end gasket kit. Includes a high-quality wrist pin bearing. Seco Pistons are forged from high silicon, low expansion aluminum which offers superior strength, reduced weight, improved heat transfer, and longer life. Compatible with all OEM components.