WRC composite bearing adapters
Italian company WRC introduce composite bearing adapters to run smaller and lighter wheel bearings in 1/10th electric touring cars and many F1 chassis. Usual wheel hub bearings weigh in at around 2.3g per pair while WRC’s bearing adapters and smaller wheel bearings scrub around 1.2g a pair meaning two bearings roughly weigh more than 1.1 gram, sparing a good amount of unsprung weight. The adapter are available in sets of four while the suitable bearings come as pairs.
Source: WRC [wrc-racing.com]