Shimano's *mostly* new GRX Di2 12-speed group is the Japanese giant's first single-ring drivetrain for gravel, and it borrows tech from the mountain bike world to make it happen.

Senior tech editor Alvin Holbrook has unboxed, installed, and ridden GRX Di2, and this week's episode sees the crew dive into his early impressions on shift speed, gear range, and how it compares to SRAM's wireless offerings.

BMC had also just released a new, lighter and even more climbing-focused Teammachine SLR ahead of the Tour de France, while Orbea launched the revamped Terra Race gravel bike. We've ridden both bikes and Josh, Alvin, and Levy break down how they perform and who they best suit.

For your consideration:

• First Ride: The Orbea Terra Race Is an Aero Road Bike in Gravel Disguise
• Classified Can Now Be Controlled Directly by Shimano Di2 Shifters
• First Look: The Canyon Endurace AllRoad Checks All the Boxes For Under $1,500
• First Ride: Shimano GRX Di2 1x Is the Fastest-Shifting Wireless Gravel Drivetrain I’ve Used
• S-Works Torch Remco Is Uber Light and Ultra Expensive