Ø 22.2 mm. For the 67 split window model. Or for the conversion to dual-circuit brake system for 1950-1966 split windows (in combination with mounting kit 611015267CSP).
In this case, the diameter of the piston remains unchanged. This ensures optimum pressure and braking effect.
Alternatively, a dual-circuit adaptation kit, reference 211611021AATE-KIT, can be used. In this case, however, the piston has a diameter of 23.8 mm (model for bay window)
and therefore produces less pressure when braking (the brake is less effective).
ATTENTION: not compatible with brake reservoir part no. 251611301D, use 211611301E instead.
