![Quarq DFOUR Dub Powermeter](https://cdn.webshopapp.com/shops/306736/files/356646201/1000x640x2/quarq-quarq-dfour-dub-powermeter.jpg)
The Quarq DFOUR Dub Powermeter Spider is stable, light and compatible with Shimano chainrings, among others. This spider can be mounted on all Sram and Quarq crank arms where the spider must be mounted with 8 bolts....
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