New partnership with Competitive Cyclist!!
New Customer Offer - Get 20% Off Your First Purchase at CompetitiveCyclist.com! Exclusions apply
Click the image below to view the Instagram Story Highlight from my first promo with Competitive Cyclist. I break down the two different GRX Rear Derailleur options, the RX815 and RX817. Both bikes also have the GRX ST-RX815 Di2 Shifters & Disc Brake Calipers.