Chainring SAMOX E-bike Narrow wide BCD104 steel black. 36T.

Narrow wide chainring 36 teeth Fits 3/32", 11/128" chains 4-bolt mounting Color: Black BCD / cross bolt spacing: 104mm Weight: 170g Measuring bolt spacing on chainrings: For 4-bolt models, measure the distance between bolts by measuring between adjacent holes. For 5-bolt models, generally use the provided measurement chart as a guide. Number of bolts on chainring | Distance between two holes | Cross hole spacing (PCD/BCD) --- | --- | --- 4 | 45.3mm | 1.78 inch | 64mm 4 | 56.6mm | 2.23 inch | 80mm 4 | 62.2mm | 2.45 inch | 88mm 4 | 66.5mm | 2.62 inch | 94mm 4 | 67.9mm | 2.67 inch | 96mm 4 | 72.1mm | 2.84 inch | 102mm 4 | 73.5mm | 2.90 inch | 104mm 4 | 84.9mm | 3.34 inch | 120mm 5 | 43.5mm | 1.71 inch | 74mm 5 | 55.2mm | 2.18 inch | 94mm 5 | 64.7mm | 2.55 inch | 110mm 5 | 76.4mm | 3.01 inch | 130mm 5 | 79.4mm | 3.12 inch | 135mm Calculation chart for calculating bolt spacing on outer ring: 4-bolt: Distance between adjacent holes divided by 0.7071 = bolt spacing 5-bolt: Distance between adjacent holes divided by 0.5878 = bolt spacing