Description
The MCS CNC 104BCD Spider is a four-bolt race spider for riders running a compatible three-piece crank and separate chainring setup.
Machined in the USA from aluminium, it keeps the drivetrain light and tidy while giving the chainring a solid, precise mounting point. It is the sort of part that does not need to be exciting — it just needs to stay straight and transfer your effort cleanly.
Check your crank spindle and bolt pattern before ordering. Close enough is not a drivetrain standard.
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