Caterham arms and blades just fitted without issue.
Observations: the Caterham arms have spring clip fitting to drive splines which may make them a sod to remove, although they fit on easily enough. OE ones use screw and wedge.
The blades are 5mm longer but pivot in the middle. This would reduce the outer arc of blade but for the severe bend in the arms of OE ones which still leaves the Caterham ones with slightly larger. Inner arc is noticeably less, hence greater swept area although not by much.
The arm spring is a little stronger on the Caterham ones which could explain why MMC put such a large bend in theirs to increase blade pressure. Usefully they will just hold overcentre to allow blades to be pulled out to nearly 90° to assist cleaning.
Blade end caps not included but can be swapped over from OE ones- a dab of glue may help.
Caterham code numbers:
Arm 30V018A, Blade 30V017A
