Sram dot 51 hydraulic brake fluidsrams dot 51 hydraulic brake fluid is compatible with the entire range of sram and avid hydraulic brakes and with its high heat enduring capability it provides fade free performance with the most aggressive use and on the longest descents this dot 51 oil takes nearly three times longer to boil than dot 4 oil so your brakes will stay consistent and reliable for longer no matter how hard you ride features compatible with entire sram and avid hydraulic brak