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Wiki User
depends how long you leave them in the freezer.
The best I can remember, the 5R6A is the colder of the two.
H-D Brand: 5R6A Screamin' Eagle: EVS13S Accel: 2410A AC Delco: R44NS Autolite: 4265 Champion: RN12YC NGK: BPR5ES-11