16602-30 Cylinder Base Nuts for 1936-1984 Big Twin

Securing your cylinders properly is vital for preventing base leaks, and these Colony high-torque base nuts are designed for exactly that purpose. Specifically made for 1936 through 1984 Big Twin and FX models, these nuts are a perfect replacement for OEM 16602-30. While they are robust enough for high-performance Big Bore cylinders, they work equally well with stock or stock-replacement setups. Colony is known for their exceptional attention to detail and high-strength hardware, ensuring these nuts can handle the torque required for a permanent seal. Whether you are finishing a restoration or a performance build, these nuts provide a clean, professional appearance while offering the mechanical integrity you need. They are a reliable choice for any Shovelhead, Panhead, or Knucklehead engine project.