• Im building a single speed bike up using a Cinelli mash work frame .I though it would be best to use chain tugs and so bought a set of the MKS 5mm chain tugs as they look nice and small and well made .
    They turned up today but sadly I couldn't get them to fit over the rear dropouts .I think if I filed the dropout ends they would fit but having just spent £750 on the frame I'm a little reluctant to do that .But wondered if it's common issue and if so do most file the dropout ends ?

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