chainstay
noun
the part of a bicycle frame running parallel to the chain that connects the bottom bracket and the rear axle.
The grammatical form denoting more than one person, place, thing, or idea.
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You can also scrub down the chainstays, chain rings, cranks and cogs, but you'll want to use a rotor cleaner or rubbing alcohol to clean the brake pads and rotors.
From Salon ● Aug. 9, 2022