If you are still running your original Brake master Cylinder, chances are that your Brakes are not operating at their optimal performance. So while you are swapping yours out you should consider an Upgrade. This N1 Brake master Cylinder is your answer. This N1 Cylinder is a larger 15/16 diameter. This provides added Pressure And a better Pedal feel. This is designed To Support the original SumiTomo caLipers but can be used with other caLipers as well. This is for non ABS vehicles.