Yamaha TSE 250 66.8MM CYLINDER BARREL PISTON GASKET KITCylinder Piston Gasket Top End Rebuild Kit 66. 8mm For Yamaha Lanza DT230 4TP 1997 1998 1999 2000 Features: If your cylinder blows through, the compression is too low, or even a piston seizure has occurred, then this kit is exactly the right thing for you. Kit includes cylinder, piston, rings, pin, clips & top end gasket kit (you get exactly what is pictured). The cylinder is made of aluminum for good cooling with an internal cast iron jacket (unlike