Red Circles YX140 7mm Pit Bike Cylinder Stud Nuts Fits 50cc 149cc Bikes & Quads, Used on Head, Not for YX150, YX160, or Z155

Perfect Fit for Smaller Engines: These 7mm thread cylinder stud nuts are designed to fit 50cc to 149cc pit bikes and quads, making them an ideal choice for most smaller engine applications. Easy Installation: Simple to install, these nuts are a direct replacement for worn or damaged cylinder stud nuts, ensuring optimal engine performance. Not for YX150, YX160, or Z155: Specifically designed for smaller engines, these nuts do not fit YX150, YX160, or Z155 models, so be sure to check compatibility before purchase. Reliable Performance: These cylinder stud nuts help maintain a secure cylinder head attachment, contributing to better engine efficiency and long-lasting durability. Durable Construction: Made from high-quality materials to ensure strength, durability, and resistance to wear, providing a secure fit for your pit bike's cylinder head.