Eliot Hertenstein @eliot.sh · Apr 15 I primarily ride in the South Bay Area, mostly in the hills east of the Stanford campus. Disc breaks will be a huge upgrade on the descents – more stopping power translates to more control and better cornering. They also mean I can run wider tires, which translates to an even more comfortable ride.
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The groupset consists of most things mounted on the frame — the crank, derailleurs, brakes, shifters, chain, etc. There are basically three companies who build these parts: Shimano, SRAM, and Campagnolo.