3 1/4in (81mm) Alloy Spinner with 5/16 UNF adapter – 5507420
Place backorder or phone to ask for ETA if not mentioned in the listing
Machined from solid Billet providing much better balance qualities than the cheaper ‘spun’ alternatives.
Spinner Adaptor & Bolt Supplied
Crank thread 5/16 UNF
Fitting thread M4