Shimano ST-5703 105 3-Speed Shift Lever
Trail riding has progressed. Expectations have changed. Riders want one bike that does it all and demand a brake that keeps up. At just 340 grams, the new X0 Trail was born to climb and engineered to descend. With a 4-piston dual-diameter caliper and innovative lever pivot bearing, it packs more power than any other brake in its class.