RcBros Spring cups
The Delrin Cups will retain RcBros & Mini T diameter springs on any shock with a 3mm shaft. The cups utilize a spring groove keeping the bottom of the shock locked into the cup. No longer will you loose your spring cups while crawling!
To assemble you need to remove the rod end from the shock.
Thread the spring on to the cup and assemble the spring/cup on to the shock shaft.
Reattached the rod end, then the shock.
Sold in packs of 4