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Rotor 64 Bicycle Chainrings

Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.

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Rotor QX2 Chainring, 64 25t Black
Rotor QX2 Chainring, 64 25t Black

For double ring setup: QX2's 10% ovalization offers a scientifically proven biomechanical advantage over round chainrings Optimum Chainring … read more

your price $99.00 + ships free

BuyBuyPART NUM 319319

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Bolt Circle Diameter (BCD) is the diameter of an imaginary circle running through the center of the chainring mounting holes. It is always defined in millimeters.

Chainring Teeth

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