آستر لنت ماده‌ای است که در ترمزهای دیسکی ایجاد اصطکاک می‌کند.

آسترهای لنت قابل تعویض هستند.

History
Brake linings were invented by Bertha Benz (the wife of Karl Benz, who invented the first patented automobile) during her long-distance car trip, the first in the world, in August 1888, when she told a shoemaker to nail leather onto the brake blocks. The first asbestos brake linings were developed in 1908 by Herbert Frood.[1] Although Frood was the first to implement the use of asbestos brake linings, the heat dissipation properties of the fibres were tested by various scientists, including materials chemist Gwilym Price, who did most of his research and testing at Cambridge, United Kingdom, and various Cambridge-funded institutions