Sonder’s Prima AL 105 Di2 sits in the brand’s performance road range, pitched at riders who want a racy feel without stepping into full carbon superbike territory. It’s the sort of bike that goes head-to-head with alloy race frames from the big names, but with modern electronic shifting and an emphasis on sharp handling and efficient power transfer.

Who is this for — and what makes it “race-oriented”?

The headline is the 7046 alloy frame, claimed at 1.4kg, which points to a lighter, stiffer chassis than typical entry-level aluminium. That usually translates to snappier acceleration, more direct feedback when you’re out of the saddle, and less energy lost when you’re pushing on. Shimano 105 Di2 brings electronic, button-press shifting: consistent changes under load and less faff with cable stretch over time, which suits fast group rides and training blocks.

• 7046 alloy frame (1.4kg claim): prioritises responsiveness and power transfer over comfort-first compliance.
• Shimano 105 Di2: precise electronic shifting for high-tempo riding and repeatable gear changes.