BBB ´´RoundAbout´´ 4, chainrings with lugs:42/44.
With special transmission lugs.
Compatible with Shimano and SRAM.
CNC-machined 7075 T6 aluminum.
Take your RoundAbout for a spin.
Color: Silver
Recommended Use: MTB Cycling
Speed: 9s
Speed: 10s
BCD: 104 mm
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