Buy from link below:
for old model Sram XX1 crankset only. other 76BCD not work.
2 adjacent bolts distance is 49.0mm; 62.4mm; 53.9mm.
Measure it before buy.
Surface treatment: Anodize, high speed CNC
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Tooth Max diameter(mm) Weight(g)
32 T , 134 mm , 44 g
34 T , 145 mm , 51 g
36 T , 154 mm , 62 g
38 T , 162 mm , 74 g
40 T , 170 mm , 85 g
1 x chainring, 4 bolts