FSA Spider Aluminium W0121 for Bosch Gen3 Boost 104mm (for E-Bikes)

54grams (W0120), 56grams (W0121). BCD - 104mm. Size: ‎BCD - 104mm. Material: ‎Aluminium. Forged AL6061 spider. Boost CL 53mm. Bosch Gen 3 motor. Further Details.

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