I see some people are confused, so I will try and make things clear.
The new, lightweight cups :
POM Solid Axle Cup Joint
"Made from reinforced resin, the cup absorbs vibration generated in running and makes cornering performance more stable.
* #61086 FRONT SOLID AXLE SET Ver.3 (BLACK)
This is a highly race-oriented item and not as durable as the stock version.
FRONT SOLID AXLE SET Ver.3 (BLACK)
Ver. 2 was this one-piece aluminum made spool introduced with the HARA / SURIKARN editions:
SOLID AXLE (1PIECE TYPE/PURPLE)
and the first spool, Ver.1 was this two piece spool introduced a while back when the black Cyclone was in the market:
FRONT SOLID AXLE SET (CYCLONE)
For the New 'Two-Way' Front One-Way Differential/Locking Spool, no option is available.
New 'Two-Way' Front One-Way Differential/Locking Spool