X Factory Infinity carbon idler gear shafts
Coming from X Factory’s Infinity range of option parts are carbon idler gear shafts. They solve the problem of early transmission failures in modern 2WD buggies that are the result of the idler gear wobbling on the gear shaft as the latter is a tad too small in diameter to allow for easier assembly. X Factory’s carbon idler gear shafts are exactly 5mm in diameter, making for a press fit of the bearing on the shaft, resulting in an ultra-precise gear location and longer gear life. The shaft is available in a TLR 22-series and a Team Associated B6/5-series variant as a single item and without the gear and bearings you can see above.
Source: X Factory [xfactoryrc.com]