Kyosho BRG008 12x18x4mm Shielded Bearings 2pcs E-Revo Parts and the steel construction is

and the steel construction is built for hard use

and realism to terrain contours on layouts of any scale size

HPI Racing 108940 TVP 3mm Octane Chassis Right Gray Savage XL Octane RTR

8mm washers

planted rear end

Kyosho BRG008 12x18x4mm Shielded Bearings 2pcs E-Revo Parts and the steel construction isA pair of 12 x 18 x 4mm shielded ball bearings, sized for axle, hub and drivetrain positions across Kyosho's Fazer Mk2 and Pure Ten touring platforms. The shield is the important detail. An open bearing in an off road or rally chassis fills with dust and grit within a couple of runs, at which point it stops rolling freely and starts dragging on the drivetrain, robbing runtime and eventually seizing. A shielded bearing keeps that contamination out and