MOOSE RACING Top End Gasket Kit - YZ 250 810666

A top-end rebuild demands precision—every gasket, seal, and O-ring must fit perfectly to maintain compression, prevent leaks, and deliver consistent performance. The MOOSE RACING Top End Gasket Kit gives you OEM-quality seals at a fraction of the cost, with high-tech materials engineered specifically for the YZ 250. Whether you're replacing a worn piston or refreshing the entire top end, this comprehensive kit provides everything you need to rebuild with confidence.

Built in the USA and designed for durability, these gaskets are manufactured to exact specifications—no compromises on fit or function. If you're looking to raise compression without the expense of a high-compression piston or cylinder head work, the high-compression variant uses .012" thick base gaskets to achieve that goal cost-effectively.

• Fits: YZ 250
• Complete top-end gasket set
• Includes valve seals
• Head, base, exhaust gaskets
• Tensioner and misc. O-rings
• OEM replacement oil seals
• USA manufactured
• High-compression option available
• Bolt-on installation
• Fraction of OEM cost