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Origin8 (Formerly Bulletproof) BMX cranks can be used as a single or double chainring setup.
These use the highly versatile 110 mm bolt circle, and fit standard tapered-square bottom bracket axles.
Q with 103mm BB is 150mm.
Chainline w/107 mm bottom bracket:
43.4 mm as double (middle of spider)
47.1 mm outer ring
39.7 mm inner ring
158 mm tread ("Q factor")
530 grams (165 mm)
Arms only, no bolts nor chainrings included.
165 mm or 170 mm
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