Peugeot 406 Brake Master Cylinder 23.81mm (4 port)

4 port brake master cylinder from Peugeot 406 - direct fit to 205/309 GTi when fitting larger front brake calipers and plumbing for running front lines individually and the rear lines as one single or both individually on the hydraulic system. 
 
We would recommend going to this size master cylinder when using anything bigger than the 266mm set up or any 4 piston calipers. If your unsure please feel fre to contact us to discuss your set up and we can advise what will work best.