The Tamiya 15464 JR HG Aluminium Ball-Race Rollers are targeted at Mini 4WD fans who want reliable, low-friction rollers. These 19mm aluminium units are engineered to be light yet hardwearing for use in multiple roller locations.
With a ringless profile and inbuilt 520 bearings, the rollers spin freely to reduce drag and stabilise motion. They are compatible with most Mini 4WD and Mini 4WD PRO chassis, making them a flexible upgrade for many builds.
Installing these ball-race rollers can help smooth corner transitions and limit energy loss from friction, key for maintaining pace on mixed-track formats. Aluminium construction brings strength while keeping the weight contribution modest.
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