Shimano GRX ST-RX820 12 Speed Shifter + Flat Mount Caliper PNS CLAMP HEAD Non-marring rubber jaws

CLAMP HEAD Non-marring rubber jaws

Removable liner with dual-density chamois for improved saddle comfort

From speedlock to brake lever 50cm

abrasion-resistant TPU lugs for the best balance of pedaling performance and off-the-bike capability

Shimano GRX ST-RX820 12 Speed Shifter + Flat Mount Caliper PNS CLAMP HEAD Non-marring rubber jawsWith the GRX, Shimano brought the first gravel specific shifting group onto the market. Since then, the range of uses and the range of gravel bikes has expanded significantly. Shimano takes this development into account by also expanding the range of the GRX group. With 12 sprockets on the rear wheel and the option to choose between a 1 speed and 2 speed setup, you can adapt your drive even better to your needs. Specifications ST RX820 Shift Brake