FSA Gamma Pro & Alpha 4 hole Megatooth 1X Steel Chainring 82BCD Thick-thin tooth design for maximum chain engagement Heat-treated forged steel MTB 4 hole BCD: 82mm Optimized for 11-12 speed system Fits 11 speed Shimano Fits 11/12 SRAM Compatible with Gamma Pro and Alpha Drive 1x crankset
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