Brembo 10.4760.60 - Radial racing master cylinder for dual disc brake front ends. The 19x20 model gives the stiffest brake lever. When ordering a replacement lever, be sure to match the pivot length of the lever with the pivot length of the master cylinder (2nd number). Can be used for Honda RS250 and Yamaha TZ250 to get the firmest lever feel from your brakes.Brembo part numbers: 10.4760.60 - 110.4760.60 and 10476060