Cane Creek 40 IS5240 Bottom - Road Bike Shop
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Cane Creek 40 IS52/40 Bottom
Price: $27.45buy now
Cane Creek's 40 IS52/40 Bottom headset cup fits 52mm lower head tubes and forks with a 30mm crown race. It's constructed from aluminum with a steel crown and low-friction seals to keep muck out and bars spinning smooth.