Spec-R Yokomo & Xray steel diff outdrives
Spec-R have two new sets of optional metal outdrives for Yokomo and Xray gear differentials available. The outdrives are machined from high-quality spring steel, they offer a hardened surface and their design does away with the need to use protective plastic blades, making them ideal when running a front differential. The parts offer super long-life characteristics and come as specific Yokomo and Xray set.
Source: Spec-R [spec-r.com]