Building or rebuilding a Banshee engine with a Cheetah Cub, Serval, Assassin, or Athena cylinder? This .020\ thick base gasket is exactly what you need. It's a Cometic-style fiber gasket, made by Interface in the USA. Part number GKB0627020F. It's brand new in packaging (might not be retail). The right gasket thickness is crucial for setting your squish and compression, so don't just use any old gasket. This one is durable, seals well, and is designed for high-performance two-stroke engines. Perfect for drag bikes, duners, or anyone pushing their Banshee to the limit. Install it during your top-end rebuild and get back to riding with confidence. Keep your engine sealed and running strong!