These are spare front direct cup parts for the TRF420 "SPOOL". Use them to replace worn parts in a timely manner, to maintain peak drive efficiency. - TRF420 Aluminum Front Direct Cups x2 - Swing Shaft Cap Parts x1 - Lightweight and with a hard coating, these direct cups offer superb durability. - Compatible with TRF420 chassis cars or those using Item 51642 TRF420 Front Direct Pulley (37T).
