T851 features a low-profile cable stop, which was designed in the style of scissors especially for installation underneath the bottom bracket. A two-bolt mounting system keeps the bolts on the caliper, while four spring-adjusted mechanisms ensure high braking power. The arm adjusts automatically, com-pensating for wear of the brake pads. It also allows the use of modern rim widths from 21 to 28 mm. T851 weighs 180 grams.