Team Associated RC18T/RC18R Aluminum Caster Block by 3Racing RC18-008/SI  [RC18-008/SI]

Aluminum caster block for RC18T/RC18R

This aluminum caster block is an RC-scale steering component intended for Team Associated RC18T and RC18R chassis, supplied by 3Racing as RC18-008/SI. It replaces the stock plastic steering block to provide a firmer mounting point for the front suspension and steering linkage without altering chassis geometry.

Installation is straightforward for hobbyists familiar with basic RC maintenance: remove the stock caster block, transfer any bearings or bushings, fit the 3Racing aluminum unit to the upright and resecure the existing hardware. No special tools beyond standard hex drivers are required, though careful torqueing of fasteners helps avoid binding.

On the bench and at the track the aluminum block plays a tuning role rather than changing major setup parameters. It increases mounting stiffness which can reduce flex under heavy steering loads, helping to keep steering response consistent when adjusting caster, camber, or toe settings. Pairing it with properly serviced ball bearings and correctly aligned steering links yields the intended handling improvements.

Practical tuning notes

• Check steering geometry after installation to verify caster and toe remain within your setup targets.
• Inspect mating surfaces and transfer any seals or spacers from the original parts to maintain bearing preload.
• Test for binding through full suspension travel before running, especially if using aftermarket uprights or offset hubs.