Caja R, Fácil Ajuste Externo, Shimano DM, Negro

- Allows up to 12 degrees of rotation at the spider, reducing the effects of chain growth that reach the riders feet. This results in the feel of riding chainless - Reduces the negative effects of chain growth on suspension performance - Ochain R is externally adjustable between 4, 6, 9, and 12 deg of rotation, helping the rider optimize the balance of spider rotation and pedaling efficiency - New Easy system adjuster - Requires a 104 BCD chainring. Fits 32-36t chainrings.

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