Shimano GRX ST-RX820 12 Speed Shifter + Flat Mount Caliper MAAP we designed a layout similar

we designed a layout similar to a book

it can withstand challenging weather conditions

free stroke

This reduces lateral forces acting on the bearings and makes for a smoother and more reactive performance that is more durable over time

Material: AL6066

Shimano GRX ST-RX820 12 Speed Shifter + Flat Mount Caliper MAAP we designed a layout similarWith 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