This double roller assembly contains two concentric 8-9mm aluminium rollers finished in gold anodising. Presented as an aftermarket spare, the parts are suitable for Mini 4WD cars that accept 8-9mm roller assemblies and concentrate on build quality and fitment rather than performance claims.
For seasoned hobbyists: these rollers are ideal to replace aged plastic originals and to provide a consistent contact surface where double rollers are permitted. Always verify chassis clearances, as stacked rollers add width and can affect side stays and stabilisers.
Installation follows common roller mounting practice. Use the correct shaft diameter, select low-friction fittings, avoid excessive torque that can deform the aluminium, and inspect regularly for wear and any burrs.
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