julio 28, 2026
Retro Bicycle Parts Shimano Chainring Biopace Narrow Oval for 600 FC-6400 FC-6403 Dura-Ace FC-7400 105 FC-1055 53T 130BCD. Engineered for compatibility with 600 FC-6400/FC-6403, Dura-Ace FC-7400, and 105 FC-1055 cranksets, this 53T chainring features Biopace technology for efficient pedaling dynamics.