SRAM Red Cranksets. Onepiece carbon fiber armspider with aluminum skeleton. Onepiece carbon fiber armspider with aluminum skeleton. Chainrings are extrastiff for optimal shifting performance in race conditions BB Cups sold separately Arm Length 170172.5175 mm Rings 3953 or 3450 Spindle Interface Type TruVativ GXP Chainring BCD 130 or 110 Bolt Pattern 5Bolt CrankFD Type Road Double Chain Compatibility ShimSRAM 10 Pedal Spindle 916
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