| RD1 Ktype (Road) Standard (53/39) or Compact (50/34) |
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Fully precision cnc machined 7075AL chain rings, ramped and pinned for perfect shifing. Available in 170,172.5,175mm lengths with 53/39T chain rings with 130mm BCD spider or 50/34T chain rings with 110mm spider 7075AL chain rings bolts BB Width:68 or 70 mm 740g with chain rings Patented double hollow hole design Spindle made by Scandium RD1 K-type Road Bike Crankset Users Manual |