S&S Cycle .500in ID x .625in OD Brown Viton O-Ring - 50-8270

S&S Cycle .9995in x 2.0070in x .2500in 4 Speed Inner Primary Seal - 56-5101

S&S Cycle .437in ID x .565in OD Viton O-Ring - 10 Pack - 50-8078

S&S Cycle 1.734in X 1.875in Nitrile O-Ring - 50-8045

S&S Cycle .299in ID x .500in OD Viton O-Ring - 50-8137-S