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Cycling Weekly
Cycling Weekly
Sport
Anne-Marije Rook

More gears, less weight: meet the new Shimano Tiagra R4000

Shimano Tiagra 4000 series.

It’s been more than a decade since Shimano last gave Tiagra a full overhaul. While the 105, Ultegra and Dura-Ace gruppos surged ahead with extra gears and new tech, Shimano’s workhorse road groupset quietly held the line at 10-speed. That changes for 2026.

The new Tiagra R4000 is a fully refreshed 2x11-speed mechanical groupset that not only adds an extra cog but also reduces system weight by more than 200 grams compared to previous configurations.

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