Xray 8.4mm titanium pivot balls
New from Xray for their NT1 and RX8 chassis’ are these titanium 8.4mm pivot balls. Precisely hand ground for high durability and long life, a single Ti pivot ball is 41% lighter than its steel counterpart. Sold in a set of 4, all steel pivot balls being replaced by these new versions gives a total combined weight saving is 12.3 grams.
Source: Xray [teamxray.com]