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Ships within 48 hours · Estimated delivery Sep 4 - Sep 9
Broached splines are made exactly the same for every cog every time
CNC machined for weight reduction
An extra cable slot is provided for dynamo wiring
Run time on Eco = 30 hrs
bodymapped structures and athletic fit ensure great body-temperature management and comfort
e*thirteen Helix Race 8-Bolt Chainring - 11/12-Speed 3mm Offset 8-Bolt Direct Mount mixed wheel size Broached splines are made exactlyHelix Race 8 Bolt Chainrings are an update to any 8 bolt drivetrain. Exquisitely machined from 7075 AL they're stiff and durable and provide a significant weight reduction over competitors. A unique four bolt locking interface reduces assembly weight while improving longevity and ease of assembly and maintenance. Featuring e*thirteen's M4 narrow wide tooth profile they deliver excellent chain retention long wear life and cross compatibility. Helix
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