Crank arms bolt circle 144 mm, aluminum 6061-T2 silver anodized,
chainrings: Type 144 TK (1"1/8)
7075-T6, torsion-resistant and aerodynamic
black anodized,
chainring bolts made of stainless steel,
for bottom bracket square JIS, axle length 107mm (not enclosed)
Weight: 700 g